Publications

Mixing of rarefied gases in T-shape micromixers

Applied Thermal Engineering

(submitted)

 

Stochastic Nature of Particle Collisions and its Impact on Granular Material Properties

(submitted)

 

Isotropy of sphere packings in a cylindrical confinement

(in print)

 

Rapid impact of nanoparticles on surfaces

(submitted)

 

Ping-pong ball cannon: Why do the barrel and balls fly in the same direction?

(submitted)

 

Instability of smoothed particle hydrodynamics applied to Poiseuille flows

Computers & Mathematics with Applications

(in print)

 

How to measure the volume fraction of granular assemblies using x-ray radiography

Powder Technology

(submitted)

 

Loose packings of micron-sized spherical particles - insights from bulk density determination, X-ray microtomography and discrete element simulations

Powder Technology

(submitted)

 

Robust event-driven particle tracking in complex geometries

Computer Physics Communication

(submitted)

 

Recurrent Periodicities in Very Tall Disks Packings

Royal Society of Chemistry

(submitted)

 

Inelastic collapse of perfectly inelastic particles

(submitted)

 

Systematic Onset of Periodic Patterns in Random Disk Packings

Physical Review Letters 120, 148002

(2018)

 
  • Sebastien Aumaitre
  • Robert P. Behringer
  • Annette Cazaubiel
  • Eric Clement
  • Jerome Crassous
  • Douglas J. Durian
  • Eric Falcon
  • Stephane Fauve
  • David Fischer
  • Angel Garcimartin
  • Yves Garrabos
  • Meiying Hou
  • Xiaoping Jia
  • Carole Lecoutre
  • Stefan Luding
  • Diego Maza
  • Martial Noirhomme
  • Eric Opsomer
  • Fabien Palencia
  • Thorsten Pöschel
  • Julien Schockmel
  • Matthias Sperl
  • Ralf Stannarius
  • Nicolas Vandewalle
  • Peidong Yu

An instrument for studying granular media in low-gravity environment

Review of Scientific Instruments 89, 075103

(2018)

 

Rotating robots move collectively and self-organize

Nature Communications 9, 931

(2018)

 

Increasing temperature of cooling granular gases

Nature Communications 9, 797

(2018)

 

Limitation of stochastic rotation dynamics to represent hydrodynamic interaction between colloidal particles

Physics of Fluids 30, 013603

(2018)

 
  • Michael Haug
  • Barbara Reischl
  • Gerhard Prölß
  • Charlotte Pollmann
  • Thomas Buckert
  • Christian Keidel
  • Sebastian Schürmann
  • Magdalena Hock
  • Stefan J. Rupitsch
  • Michael Heckel
  • Thorsten Pöschel
  • Thomas Scheibel
  • Christian Haynl
  • Leonit Kiriaev
  • Stewart I. Head
  • Oliver Friedrich

The MyoRobot: A novel automated biomechatronics system to assess voltage/Ca2+ biosensors and active/passive biomechanics in muscle and biomaterials

Biosensors and Bioelectronics 102, 589-599

(2018)

 

Orientation-dependent properties of nanoparticle impact

Physical Review E 98, 022902

(2018)

 

Dynamic capillary phenomena using Incompressible SPH

Chemical Engineering Science 176, 192-204

(2018)

 

Structural changes in wet granular matter due to drainage

EPJ Web of Conferences 140, 09005

(2017)

 

Barchan dunes on Pluto?

EPJ Web of Conferences 140, 14010

(2017)

 

Numerical and Experimental Study of the Powder Bed Characteristics in the Recoated Bed of the Additive Manufacturing Process

V International Conference on Particle-based Methods – Fundamentals and Applications. PARTICLES 2017 (P. Wriggers, M. Bischoff, E. Oñate, D.R.J. Owen, T. Zohdi). 429-439. Hannover.

(2017)

 

Dynamical regimes and stability of circular granular ratchets

Scientific Reports 7, 12723

(2017)

 

Liquidlike sloshing dynamics of monodisperse granulate

Physical Review E 96, 040901(R)

(2017)

 

Dripping faucet in extreme spatial and temporal resolution

American Journal of Physics 85, 649

(2017)

 

Field-driven pattern formation in nematic liquid crystals: mesoscopic simulations of electroconvection

RSC Advances 7, 42218-42224

(2017)

 

Erratum to: Actively Rotating Granular Particles manufactured by Rapid Prototyping

Revista Cubana de Física 34, 69

(2017)

 

Isotropic stochastic rotation dynamics

Physical Review Fluids 2, 124204

(2017)

 

Electroconvection of Pure Nematic Liquid Crystals without Free Charge Carriers

Soft Matter 13, 8816-8823

(2017)

 

Origin of Granular Capillarity Revealed by Particle-Based Simulations

Physical Review Letters 118, 218001

(2017)

 

Coupled Simulation of Deformable Bodies and ISPH Fluids for Secondary Bone Healing

EG 2017 - Posters (P. Benard, D. Sykora). The Eurographics Association.

(2017)

 

Particle-based simulations of powder coating in additive manufacturing suggest increase in powder bed roughness with coating speed

EPJ Web of Conferences 140, 15013

(2017)

 

Microgravity spreading of water spheres on hydrophobic capillary plates

EPJ Web of Conferences 140, 16001

(2017)

 

Homogeneous cooling state of dilute granular gases of charged particles

Physics of Fluids 29, 083303

(2017)

 

Velocity distribution of a homogeneously driven two-dimensional granular gas

Physical Review Letters 118, 198003

(2017)

 

Homogenization of granular pipe flow by means of helical inner-wall texture

EPJ Web of Conferences 140, 03069

(2017)

 

Vertical motion of particles in vibration-induced granular capillarity

EPJ Web of Conferences 140, 16008

(2017)

 

Energy decay in a granular gas collapse

New Journal of Physics 19, 013001

(2017)

 

Weight of an Hourglass – Theory and Experiment in Quantitative Comparison

American Journal of Physics 85, 98

(2017)

 

Granular dampers: does particle shape matter?

New Journal of Physics 18, 073049

(2016)

 

Heaping and secondary flows in sheared granular materials

New Journal of Physics 18, 113006

(2016)

 

Effect of vibrations applied to the transport roller in the quality of the powder bed during additive manufacturing

6th International Conference on Additive Technologies. iCAT 2016 (I. Drstvenšek, D. Drummer, M. Schmidt). Interesansa - zavod. Ljubljana.

(2016)

 

Ratcheting and tumbling motion of Vibrots

New Journal of Physics 18, 123001

(2016)

 

Erratum to: Stable algorithm for event detection in event-driven particle dynamics: logical states

Computational Particle Mechanics 3, 389

(2016)

 

Dissipation of Energy by Dry Granular Matter in a Rotating Cylinder

Scientific Reports 6, 26833

(2016)

 

Exact calculation of the overlap volume of spheres and mesh elements

Journal of Computational Physics 311, 158-172

(2016)

 

Inexpensive Mie scattering experiment for the classroom manufactured by 3D printing

European Journal of Physics 37, 055305

(2016)

 

Homogeneous cooling of mixtures of particle shapes

Physics of Fluids 28, 073301

(2016)

 

Stable algorithm for event detection in event-driven particle dynamics: logical states

Computational Particle Mechanics 3, 383-388

(2016)

 

Fractal substructure of a nanopowder generated by repeated fragmentation and sedimentation: the rôle of the dust

Granular Matter 18, 31

(2016)

 

Reply to comment on ‘Are physicists afraid of mathematics?’

New Journal of Physics 18, 118004

(2016)

 

Actively rotating granular particles manufactured by rapid prototyping

Revista Cubana de Física 33, 37-38

(2016)

 

The microscopic structure of mono-disperse granular heaps and sediments of particles on inclined surfaces

Soft Matter 12, 3184-3188

(2016)

 

Particle-based simulation of powder application in additive manufacturing

Powder Technology 288, 96-102

(2016)

 

Steepest descent ballistic deposition of complex shaped particles

Journal of Computational Physics 308, 421-437

(2016)

 

Can we obtain the coefficient of restitution from the sound of a bouncing ball?

Physical Review E 93, 032901

(2016)

 

Subharmonic instability of a self-organized granular jet

Scientific Reports 6, 22520

(2016)

 

Residual defect density in random deposits of disks

Scientific Reports 5, 12703

(2015)

 

Two-dimensional airflow modeling underpredicts the wind velocity over dunes

Scientific Reports 5, 16572

(2015)

 

Positron Emission Particle Tracking in Fluidized Beds with Secondary Gas Injection

Powder Technology 279, 113-122

(2015)

 

Particle Tracking In Fluidized Beds With Secondary Gas Injection

Procedia Engineering 102, 850-857

(2015)

 

Helical inner-wall texture prevents jamming in granular pipe flows

Soft Matter 11, 4295-4305

(2015)

 

Are physicists afraid of mathematics?

New Journal of Physics 17, 013036

(2015)

 

Hydrodynamics of binary mixtures of granular gases with stochastic coefficient of restitution

Journal of Fluid Mechanics 781, 595-621

(2015)

 

Fluidization of a horizontally driven granular monolayer

Physical Review E 91, 062213

(2015)

 

Absence of Subharmonic Response in Vibrated Granular Systems under Microgravity Conditions

Physical Review Applied 3, 024007

(2015)

 

Self-organized Shocks in the Sedimentation of a Granular Gas

Physical Review E 91, 062214

(2015)

 

Probing the Validity of an Effective-One-Particle Description of Granular Dampers in Microgravity

Granular Matter 17, 73-82

(2015)

 

Structure of a three-dimensional nano-powder subjected to repeated fragmentation and sedimentation

New Journal of Physics 17, 013024

(2014)

 

Granular jet impact: probing the ideal fluid description

Journal of Fluid Mechanics 751, 601-626

(2014)

 

Coefficient of Restitution of Aspherical Particles

Physical Review E 90, 052204

(2014)

 

Introduction of a new technique to measure the coefficient of restitution for nanoparticles

Chemie Ingenieur Technik 86, 365-374

(2014)

 

Stochastic behavior of the coefficient of normal restitution

Physical Review E 89, 022205

(2014)

 

Stable algorithm for event detection in event-driven particle dynamics

Computational Particle Mechanics 1, 191-198

(2014)

 

Relation of structure and history of granular sediments

Jam-Packed 2014, Erlangen, Germany, 15th – 18th

(2014)

Research Projects
Materials
 

Sedimentation and Collapse of a granular gas under gravity

Jam-Packed – Jamming and Packing of particulate systems, Erlangen, Germany, 15th – 18th September

(2014)

Research Projects
 

Attractive particle interaction forces and packing density of fine glass powders (Poster)

Packing and Jamming of Particulate Systems – Jam Packed 2014, September 15-18, Erlangen

(2014)

Research Projects
Materials
 

Numerical study of the packing density of fine powders by means of the Discrete Element Method

85th Annual Meeting of the International Association of Applied Mathematics and Mechanics – GAMM 2014, March 10-14

(2014)

 

Attractive particle interaction forces and packing density of fine glass powders

Scientific Reports 4, 6227

(2014)

 

Origins of barchan dune asymmetry: insights from numerical simulations

Aeolian Research 12, 121-133

(2014)

 

Self-organization of antiperiodic oscillations

EPJ Special Topics 223, 2857-2867

(2014)

 

Morphodynamic modeling of aeolian dunes: Review and future plans

EPJ Special Topics 223, 2269-2283

(2014)

 

Complex Velocity Dependence of the Coefficient of Restitution of a Bouncing Ball

Physical Review Letters 110, 254301

(2013)

 

Energy Dissipation in Driven Granular Matter in the Absence of Gravity

Physical Review Letters 111, 018001

(2013)

 

Competition between unlimited and limited energy growth in a two-dimensional time-dependent billiard

Physics Letters A 377, 2052–2057

(2013)

 

Janus Particles at Walls Modified with Tethered Chains

Journal of Physical Chemistry B 117, 1166−1175

(2013)

 

Relaxation of a spring with an attached granular damper

New Journal of Physics 15, 093023

(2013)

 

Pattern formation in a horizontally shaken granular submonolayer

Granular Matter 15, 377–387

(2013)

 

Collective Granular Dynamics in a Shaken Container at Low Gravity Conditions

AIP Conference Proceedings 1542, 811-814

(2013)

 

Event-driven molecular dynamics of soft particles

Physical Review E 87, 033301

(2013)

 

Erratum: Collision dynamics of granular particles with adhesion [Physical Review E 76, 051302 (2007)]

Physical Review E 87, 039904(E)

(2013)

 

Temperature of a granular gas with regard to the stochastic nature of particle interactions

New Journal of Physics 15, 093030

(2013)

 

Event-driven DEM of soft spheres

AIP Conference Proceedings 1542, 149-152

(2013)

 

Micro-mechanics and dynamics of cohesive particle systems

Granular Matter 15, 389-390

(2013)

 

Characteristics of large three-dimensional heaps of particles produced by ballistic deposition from extended sources

Philosophical Magazine 93, 4090-4107

(2013)

 

Modeling the packing of nano-powders

EAM Summerschool, Kloster Banz, Germany

(2013)

Research Projects
Materials
 

A numerical study of the Navier–Stokes transport coefficients for two-dimensional granular hydrodynamics

New Journal of Physics 15, 043044

(2013)

 

Numerical modeling of the wind flow over a transverse dune

Scientific Reports 3, 2858

(2013)

 

Zig-zag networks of selfexcited periodic oscillations in a tunnel diode and a fiber-ring laser

Physical Review E 87, 042907

(2013)

 

Infinite Networks of Hubs, Spirals, and Zig-Zag Patterns in Self-sustained Oscillations of a Tunnel Diode and of an Erbium-doped Fiber-ring Laser

Selected Topics in Nonlinear Dynamics and Theoretical Electrical Engineering (Kyamakya K., Halang W., Mathis W., Chedjou J., Li Z.; Eds.) SCI 459. 161-177. Springer. Berlin, Heidelberg.

(2013)

 

Characterization of the stability of semiconductor lasers with delayed feedback according to the Lang-Kobayashi model

The European Physical Journal D 67, 149

(2013)

 

Antiperiodic oscillations

Scientific Reports 3, 1958

(2013)

 

Discontinuous spirals of stable periodic oscillations

Scientific Reports 3, 3350

(2013)

 
  • Ascâno D. Araújo
  • Eric Parteli
  • Thorsten Pöschel
  • José S. Andrade Jr.
  • Hans J. Herrmann

Modeling the turbulent wind flow over transverse dunes

Presented at Powders and Grains 2013, Sydney, Australia, 08th – 12th

(2013)

Research Projects
Materials
 

Polydirectional Stability of Granular Matter

Physical Review Letters 111, 168003

(2013)

 

Hydrodynamics at the Navier-Stokes Level Applied to Fast, Transient, Supersonic Granular Flows

AIP Conference Proceedings 1501, 993-1000

(2012)

 

Isaac Goldhirsch: a pioneer of granular matter theory

Granular Matter 14, 77

(2012)

 

Recurrent Inflation and Collapse in Horizontally Shaken Granular Materials

Physical Review E 85, 031307

(2012)

 

Circular ratchets as transducers of vertical vibrations into rotations

Physical Review E 86, 061310

(2012)

 

Granular dampers for the reduction of vibrations of an oscillatory saw

Physica A 391, 4442-4447

(2012)

 

Oblique impact of frictionless spheres: On the limitations of hard sphere models for granular dynamics

Granular Matter 14, 115-120

(2012)

 

Negative coefficient of normal restitution

Physical Review E 85, 041306

(2012)

 

Structure of granular packings

Proceedings XXIII ICTAM, 19th – 24th August 2012, Beijing, China

(2012)

 

Nonuniformities in the angle of repose and packing fraction of large heaps of particles

Physical Review Letters 109, 128001

(2012)

 

Non-Uniformities in the angle of repose and packing fraction of large heaps of granular matter

EAM Summerschool, Kloster Banz, Germany

(2012)

Research Projects
 

Stern-Brocot trees in spiking and bursting of sigmoidal maps

Europhysics Letters 100, 48002

(2012)

 

Periodicity Hubs with Discontinuous Spirals in a Noiseless Duffing Proxy: Experiment and Theory

(2012)

Research Projects
 

Collision of Viscoelastic Spheres: Compact Expressions for the Coefficient of Normal Restitution

Physical Review E 84, 021302

(2011)

 

Coefficient of restitution as a fluctuating quantity

Physical Review E 84, 041306

(2011)

 

Two-ball problem revisited: Limitations of event-driven modeling

Physical Review E 83, 041304

(2011)

 

Movers and shakers: Granular damping in microgravity

Physical Review E 84, 011301

(2011)

 

Force Statistics and Correlations in Dense Granular Packings

Chemical Physics 375, 600-605

(2010)

 
  • Robert Behringer
  • James Jenkins
  • Touvia Miloh
  • Steven Orszag
  • Thorsten Pöschel
  • Philip Rosenau
  • Stuart Savage
  • Zeev Schuss
  • Lev Shemer

Professor Isaac Goldhirsch 11 October 1949–29 April 2010

Journal of Fluid Mechanics 655, 1–2

(2010)

 

Approximate 3D motif search in proteins with domain specific knowledge

New Trends in Artificial Intelligence. 14th Portuguese Conference on Artificial Intelligence. EPIA 2009. Aveiro, October 12-15, 2009. Proceedings (Luís Seabra Lopes, Nuno Lau, Pedro Mariano, Luís M. Rocha), 101-112

(2009)

 

Correlation of spin and velocity in the homogeneous cooling state of a granular gas of rough particles

EPJ Special Topics 179, 91-111

(2009)

 

Granular Gases: Beyond the Dilute Limit

EPJ Special Topics 179

(2009)

 

Fractal Substructures due to Fragmentation and Reagglomeration

AIP Conference Proceedings 1145, 859-862

(2009)

 

Granular hydrodynamics and pattern formation in vertically oscillated granular disk layers

Journal of Fluid Mechanics 597, 119-144

(2008)

 

Coefficient of tangential restitution for viscoelastic spheres

The European Physical Journal E, 27, 107-114

(2008)

 

Coefficient of tangential restitution for the linear dashpot model

Physical Review E, 77, 011304

(2008)

 

Hourglass of constant weight

Granular Matter 10, 231-232

(2008)

 

Coefficient of restitution for viscoelastic spheres: The effect of delayed recovery

Physical Review E, 78, 051304

(2008)

 

Fractal Substructure of a Nanopowder

Physical Review Letters 100, 218002

(2008)

 
  • Raphael A. Bauer
  • Philip E. Bourne
  • Arno Formella
  • Cornelius Frömmel
  • Christoph Gille
  • Andrean Goede
  • Aysam Guerler
  • Andreas Hoppe
  • Ernst-Walter Knapp
  • Thorsten Pöschel
  • Burghardt Wittig
  • Valentin Ziegler
  • Robert Preissner

Superimposé: A 3D structural superposition server

Nucleic Acids Research 36, W47–W54

(2008)

 

Contact of granular particles and the simulation of rapid flows using event-driven molecular dynamics

European Journal of Environmental and Civil Engineering 12, 827-870

(2008)

 

Granular gas cooling and relaxation to the steady state in regard to the overpopulated tail of the velocity distribution

International Journal of Modern Physics C 18, 701-711

(2007)

 

Translations and Rotations are correlated in Granular Gases

Physical Review Letters 98, 128001

(2007)

 

Traffic and Granular Flow'05

(Andreas Schadschneider, Thorsten Pöschel, Reinhard Kühne, Michael Schreckenberg, Dietrich E. Wolf), Springer

(2007)

Research Projects
Materials
 

Close-packed granular clusters: hydrostatics and persistent Gaussian fluctuations

Granular Matter 10, 21-27

(2007)

 

Coefficient of restitution and linear dashpot model revisited

Granular Matter 9, 465-469

(2007)

 

Collision dynamics of granular particles with adhesion

Physical Review E 76, 051302

(2007)

 

Erratum to: Breakdown of the Sonine expansion for the velocity distribution of granular gases

Europhysics Letters 75, 188

(2006)

 

Long-time behavior of granular gases

Modelling and numerics of kinetic dissipative systems (Pareschi, L. and Russo, G. and Toscani, G.), Nova Science, Hauppauge NY

(2006)

Research Projects
Abstract

The most striking phenomenon in the dynamics of granular gases is the formation of clusters and other structures. We investigate a gas of dissipatively colliding particles with a velocity dependent coefficient of restitution where cluster formation occurs as a transient phenomenon. Although for small impact velocity the particles collide elastically, surprisingly the temperature converges to zero.

 

Markovsche Analyse nasser Gemeinschaften

Irreversible Prozesse und Selbstorganisation (Pöschel, T.; Malchow, H.; and Schimansky-Geier, L.), 281 - 292. Berlin: Logos.

(2006)

 

Efficient numerical simulation of granular matter using the Bottom-To-Top Reconstruction method

Behavior of Granular Media (Walzel, P.; Grochowski, R.; Kruelle, C.; and Linz, S. J.), 151 - 159. Aachen: Shaker.

(2006)

 

Impact of high-energy tails on granular gas properties

Physical Review E 74, 041302

(2006)

 

Irreversible Prozesse und Selbstorganisation

Logos, Berlin

(2006)

Research Projects
Materials
 

Breakdown of the Sonine expansion for the velocity distribution in granular gases

Europhysics Letters 74, 424-430

(2006)

 

Adhesive interactions of viscoelastic spheres

Powders & Grains 2005: Proceedings of the 5th International Conference on Micromechanics of Granular Media (Garcia-Rojo, R., Herrmann, H. J., McNamara, S.), 1247-1253. Taylor & Francis.

(2005)

 

Rolling friction and bistability of rolling motion

Powders & Grains 2005: Proceedings of the 5th International Conference on Micromechanics of Granular Media (Garcia-Rojo, R., Herrmann, H. J., McNamara, S.) 2, 505-509. Taylor & Francis.

(2005)

 

Computational Granular Dynamics - Models and Algorithms

Springer, Berlin, Heidelberg, New York

(2005)

Research Projects
 

Self-diffusion in granular gases: Green-Kubo versus Chapman-Enskog

Chaos 15, 026108

(2005)

 

Peptide-size–dependent active transport in the proteasome

Europhysics Letters 69, 725-731

(2005)

 

Bistability and noise-enhanced velocity of rolling motion

Europhysics Letters 69, 371-377

(2005)

 

Transient clusters in granular gases

Journal of Physics: Condensed Matter 17, S2705–S2713

(2005)

 

Reply to “Prion Kinetics”

Biophysical Journal 87, 729

(2004)

 

Erratum: Giant fluctuations at a granular phase separation threshold [Phys. Rev. E 69, 021302 (2004)]

Physical Review E 69, 059905

(2004)

 

Collision of adhesive viscoelastic particles

The Physics of Granular Media (Hinrichsen, H. and Wolf, D. E.), 189-209. Amsterdam: Wiley.

(2004)

 

Transient structures in a Granular Gas

Physical Review Letters 93, 134301

(2004)

 

Kinetic Theory of Granular Gases

Oxford University Press, Oxford

(2004)

Research Projects
 

Giant fluctuations at a granular phase separation threshold

Physical Review E 69, 021302

(2004)

 

Granular Gases: Kinetic theory meets computer simulations

Proceed. 7th APCTP Winter School on Granular Material and Complex Systems (Lee, J.). Phoenix Park, Kangwondo, Korea: Asia Pacific Center for Theoretical Physics.

(2003)

 

Kinetic Integrals in the Theory of Dissipative Gases

Granular Gas Dynamics (Lecture Notes in Physics) (Pöschel, T. and Brilliantov, N. V) 624, 131-162. Berlin: Springer.

(2003)

 

How to decide whether small samples comply with an equidistribution

Biosystems 69, 63-72

(2003)

 

Hydrodynamics and transport coefficients for Dilute Granular Gases

Physical Review E 67, 061304

(2003)

 

Close-Packed Floating Clusters: Granular Hydrodynamics Beyond the Freezing Point?

Physical Review Letters 91, 024301

(2003)

 

Kinetics of Prion Growth

Biophysical Journal 85, 3460-3474

(2003)

 

Correction algorithm for finite sample statistics

European Physical Journal E 12, 531-541

(2003)

 

Online tool for the discrimination of equi-distributions

BMC Bioinformatics 4, 58-64

(2003)

 

Violation of Molecular Chaos in dissipative gases

International Journal of Modern Physics C 13, 1263-1272

(2002)

 

Mechanik körniger Medien

Perspektiven der Forschung und ihrer Förderung, 417-427. Weinheim: Wiley-VCH.

(2002)

 

Finite-sample frequency distributions originating from an equiprobability distribution

Physical Review E 66, 026103

(2002)

 

Hydrodynamics of dense granular systems

SPIE, 3045

(2002)

Research Projects
Abstract

The properties of dense granular systems are analyzed from a hydrodynamical point of view, based on conservation laws for the particle number density and linear momentum. We discuss averaging problems associated with the nature of such systems and the peculiarities of the sources of noise. We perform a quantitative study by combining analytical methods and numerical results obtained by ensemble-averaging of data on creep during compaction and molecular dynamics simulations of convective flow. We show that numerical integration of the hydrodynamic equations gives the expected evolution for the time-dependent fields.

 

Materials
 

Hydrodynamics of granular gases of viscoelastic particles

Philosophical Transactions of the Royal Society A 360, 415-428

(2002)

 

Rigid body dynamics of railway ballast

System Dynamics and Long-Term Behaviour of Railway Vehicles, Track and Subgrade (Popp, K., and Schiehlen, W.), 451-470. Berlin: Springer.

(2002)

 

Long-time behavior of granular gases with impact-velocity dependent coefficient of restitution

Physica A 325, 274-283

(2002)

 

Chains of viscoelastic spheres

Granular Gases (Pöschel, T. and Luding, S) 564, 203-212. Berlin: Springer.

(2001)

 

Scaling properties of granular materials

Physical Review E 64, 011308

(2001)

 

Extremal collision sequences of particles on a line: Optimal transmission of kinetic energy

Physical Review Letters 63, 021505

(2001)

 

Can we scale granular systems?

Powders and Grains 2001: Proceedings of the Fourth International Conference on Micromechanics of Granular Media, Sendai, 21-25 May 2001 (Kishino, Y.), 439-442. Rotterdam: Balkema.

(2001)

 

Granular gases with impact-velocity dependend restitution coefficient

Granular Gases (Pöschel, T. and Luding, S) 564, 100-124. Berlin: Springer.

(2001)

 

Vertically shaken column of spheres. Onset of fluidization

European Physical Journal E 4, 233-239

(2001)

 

Granular Gases - The early stage

Coherent Structures in Complex Systems - Selected Papers of the XVII Sitges Conference on Statistical Mechanics Held at Sitges, Barcelona, Spain, 5-9 June 2000 (D. Reguera, L.L. Bonilla, and M. Rubi) 567, 408-419. Berlin: Springer.

(2001)

 

Dynamics of granular systems (in German)

Logos, Berlin

(2001)

Research Projects
 

Fluidization of granular material by vertical shaking

Mechanics for a New Millennium - Proceedings of the 20th International Congress on Theoretical and Applied Mechanics, held in Chicago, USA, 27 August - 2 September 2000 (Aref, H. and Philips, J.W.). Dortrecht: Kluwer.

(2000)

 

Amalgamersatz nicht ohne Schutz

Zahnärzteblatt der Landeszahnärztekammer Thüringen

(2000)

 

Molecular dynamics of comminution in ball mills

European Physical Journal B 16, 169–182

(2000)

 

Convection in horizontally shaken granular material

European Physical Journal E 1, 55-59

(2000)

 

Deviation from Maxwell distribution in granular gases with constant restitution coefficient

Physical Review E 61, 2809 – 2812

(2000)

 

Molekulardynamische Untersuchung von Zerkleinerungsprozessen in Kugelmühlen

Schüttgut 6, 11-24

(2000)

 

Granular Gases

Lecture Notes in Physics, 564, Springer, Berlin, Heidelberg, New York

(2000)

Research Projects
Materials
 

Self-diffusion in granular gases

Physical Review E 61, 1716-1721

(2000)

 

Velocity distribution in granular gases of viscoelastic particles

Physical Review E 61, 5573-5587

(2000)

 

From ''solid'' to to ''fluid'': Time dependent hydrodynamical analysis of dense granular flows

Mechanics for a New Millennium - Proceedings of the 20th International Congress on Theoretical and Applied Mechanics, held in Chicago, USA, 27 August - 2 September 2000 (Aref, H.; Philips, J.W.). Dortrecht: Kluwer.

(2000)

 

Diffusion in granular gases of viscoelastic particles

Stochastic Processes in Physics, Chemistry, and Biology (Freund, J. A. and Pöschel, T.) 557, 107-117. Berlin: Springer.

(2000)

 

Onset of fluidization in vertically shaken granular material

Physical Review E 62, 1361-1367

(2000)

 

Stochastic Processes in Physics, Chemistry, and Biology

Lecture Notes in Physics, 557, Springer, Berlin, Heidelberg, New York

(2000)

Research Projects
 

Granular Gases

Physikalische Blätter 55, 99

(1999)

 

Rolling friction of a hard cylinder on a viscous plane

European Physical Journal B 10, 169-174

(1999)

 

Rolling as a “continuing collision”

European Physical Journal B 12, 299-301

(1999)

 

Dissipative properties of vibrated granular materials

Physical Review E 59, 4422-4425

(1999)

 

Coefficient of restitution of colliding viscoelastic spheres

Physical Review E 60, 4465-4472

(1999)

 

Dynamics of granular systems - Theory, experiments, and numerical experiments (in German)

habilitation thesis, Humboldt-University Berlin

(1999)

Research Projects
Materials
 

Experimental study of horizontally shaken granular matter — The swelling effect

A Perspective Look at Nonlinear Media. Lecture Notes in Physics (Parisi J., Müller S.C., Zimmermann W.) 503, 96-109. Berlin: Springer.

(1998)

 

Coefficient of normal restitution of viscous particles and cooling rate of granular gases

Physical Review E 57, 650-654

(1998)

 

Comment on “Clustering of Granular Assemblies with Temperature Dependent Restitution under Keplerian Differential Rotation”

Physical Review Letters 80, 5708

(1998)

 

Rolling friction of a viscous sphere on a hard plane

Europhysics Letters 42, 511-516

(1998)

 

Interaction of a granular stream with an obstacle

Granular Matter 1, 33-41

(1998)

 

Coefficient of restitution of viscous particles and cooling rate of granular gases

Physical Review E, 57, 650-654

(1998)

Research Projects
Abstract

We investigate the cooling rate of a gas of inelastically interacting particles. When we assume velocity-dependent coefficients of restitution the material cools down slower than with constant restitution. This behavior might have a large influence to clustering and structure formation processes.

Materials
 

Is there a critical acceleration for the onset of convection?

Physics of Dry Granular Media: Proceedings of the NATO Advanced Study Institute, Cargese, France, September 15-26, 1997 (H. J. Herrmann and J.-P. Hovi and S. Luding) 350, 625-631. Dortrecht: Kluwer.

(1998)

 

Dissipative properties of granular ensembles

Proceedings 3327, Smart Structures and Materials 1998: Passive Damping and Isolation, 19-26

(1998)

 

The granular phase diagram

Journal of Statistical Physics 86, 1385-1395

(1997)

 

Stochastic Dynamics

Lecture Notes in Physics, 484, Springer, Berlin, Heidelberg, New York

(1997)

Research Projects
 

Langevin equation approach to granular flow in a narrow pipe

Journal of Statistical Physics 86, 421-430

(1997)

 

A measure of the information content of neural spike trains

Biological Complexity (Mizraji, E., Acerenza, L., Alvarez, F., and Pomi, A.), 113-142. Montevideo, Uruguay: D.I.R.A.C.

(1997)

 

Adaptive evolutionary optimization of team work

International Journal of Bifurcation and Chaos 7, 751-757

(1997)

 

Cluster Statistics and Traffic on a Lattice

Stochastic Dynamics (Schimansky-Geier, L. and Pöschel, T.) 484, 220-231. Berlin: Springer.

(1997)

 

Hydrodynamic fluctuations and averaging problems in dense granular flows

Proceedings 3045, Smart Structures and Materials 1997: Passive Damping and Isolation, 341-344

(1997)

 

Contact of viscous spheres

Friction, Arching and Contact Dynamics (Wolf, D. E. and Grassberger, P.), 293-299, World Scientific, Singapore

(1997)

Research Projects
Abstract

In a recent paper an implicit equation for contacting viscoelastic spheres was derived [1]. Integrating this equation it can be shown that the coefficient of normal restitution ε depends on the impact velocity g as 1- ε ∼ g^⅕

 

Materials
 

Force Distribution and Comminution in Ball Mills

Friction, Arching, Contact Dynamics: Proceedings of the Workshop, HLRZ, Forschungszentrum Jülich, Germany, 28-30 October 1996 (Wolf, D. E. and Grassberger, P.), 265-273. Singapore: World Scientific.

(1997)

 

Kann die Entropie von Sequenzen vermittelst der Kompressibilität gemessen werden?

Dynamik, Evolution, Strukturen: Nichtlineare Dynamik und Statistik komplexer Strukturen (Freund, J.), 191-201. Berlin: Köster.

(1996)

 

Die Kühlrate eines granularen Gases

Dynamik, Evolution, Strukturen: Nichtlineare Dynamik und Statistik komplexer Strukturen (Freund, J.), 237-246. Berlin: Köster.

(1996)

 

Molecular dynamics simulation of size segregation in three dimensions

Journal of Statistical Physics 82, 443-450

(1996)

 

Model for collisions in granular gases

Physical Review E 53, 5382-5392

(1996)

 

The hypercube structure of the genetic code explains conservative and non-conservative aminoacid substitutions in vivo and in vitro

Biosystems 39, 117-125

(1996)

 

The collision of particles in granular systems

Physica A 231, 417-424

(1996)

 

Swirling granular matter: from rotation to reptation

Physical Review E 54, R4560(R)

(1996)

 

Avalanche statistics of sand heaps

Journal of Statistical Physics 84, 1373-1378

(1996)

 

Entropy and compressibility of symbol sequences

Proceedings of PhysComp96: Fourth Workshop on Physics and Computation, Boston, 22-24 November 1996 (Toffoli, T., Biafore, M. and Leão, J.), 103-107. Complex Systems Institute. Boston.

(1996)

 

Cooling rate of a granular gas (in German)

Dynamik, Evolution, Strukturen: Nichtlineare Dynamik und Statistik komplexer Strukturen (Freund, J.) 237-246, Köster, Berlin

(1996)

Research Projects
Abstract

Das dissipative Verhalten granularer Gase ist wegen seiner ungewöhnlichen Eigenschaften von großem wissenschaftlichen Interesse. Goldhirsch and Zanetti [1] und McNamara und Young [2] zeigten, dass ein homogen initialisiertes granulares Gas im Laufe der Zeit instabil ist – nach einiger Zeit der Abkühlung durch dissipative Stöße bilden sich räumliche Dichteinhomogenitäten und schließlich Cluster.

Materials
 

Can we measure the entropy of symbol sequences by means of compressibility? (in German)

Dynamik, Evolution, Strukturen: Nichtlineare Dynamik und Statistik komplexer Strukturen (Freund, J.) ,191-201, Köster, Berlin

(1996)

Research Projects
Materials
 

Book Review: K.S. Birdy, Fractals in Chemistry, Geochemistry, and Biophysics. Plenum Press, New York and London, 1993

Zeitschrift für Physikalische Chemie 188, 311

(1995)

 

Complex flow of granular material in a rotating cylinder

Chaos, Solitons & Fractals 5, 1901-1905, 1907-1912

(1995)

 

A statistical approach to vehicular traffic

Physica A 219, 95-113

(1995)

 

Guessing probability distributions from small samples

Journal of Statistical Physics 80, 1443-1452

(1995)

 

Size segregation and convection

Europhysics Letters 29, 123-129

(1995)

 

Simulation of rotating drum experiments using non-circular particles

Physica A 216, 199-212

(1995)

 

Entropy, transinformation and word distribution of information-carrying sequences

International Journal of Bifurcation and Chaos 5, 51-61

(1995)

 

Molecular dynamics of arbitrarily shaped granular particles

Journal de Physique I France 5, 1431-1455

(1995)

 

SYNTAX: A computer program to compress a sequence and to estimate its information content

Guanajuato Lectures, México, 16-22 Januar 1995 (López-Peña, R. and Waelbroeck, H. and Zertuche, F.).

(1995)

 

Dynamic entropies, long-range correlations and fluctuations in complex linear structures

Coherent Approaches to Fluctuations (Proc. Hayashibara Forum 95), 59-64. Singapore: World Scientific.

(1995)

 

Numerical investigations of the evolution of sandpiles

Physica A 202, 390-401

(1994)

 

Entropy and Long-Range Correlations in Literary English

Europhysics Letters 26, 241-246

(1994)

 

Numerical investigation of the evolution of sandpiles

Physica A, 202, 390-401

(1994)

Research Projects
Abstract

The evolution of a pile of granular material is investigated by molecular dynamics using a new model including nonsphericity of the particles instead of introducing static friction terms. The angle of repose of the piles as well as the avalanche statistics gathered by the simulation agree with experimental results. The angle of repose of the pile is determined by the shape of the grains. Our results are compared with simulations using spherical grains and static friction.

Materials
 

On collisions between granular particles: Application to planetary rings

Bulletin of the American Astronomical Society 26, 1143-1144

(1994)

 

Entropy and long range correlations in literary English

Europhysics Letters, 26, 241-246

(1994)

Research Projects
Abstract

We investigated long range correlations in two literary texts, Moby Dick by H. Melville and Grimm’s tales. The analysis is based on the calculation of entropy like quantities as the mutual information for pairs of letters and the entropy, the mean uncertainty, per letter. We further estimate the number of different subwords of a given length n. Filtering out the contributions due to the effects of the finite length of the texts, we find correlations ranging to a few hundred letters. Scaling laws for the mutual information (decay with a power law), for the entropy per letter (decay with the inverse square root of n) and for the word numbers (stretched exponential growth with n and with a power law of the text length) were found.

Materials
 

A simple model for the growth of ramified leaf structures

Chaos, Solitons & Fractals 4, 1883-1888

(1994)

 

Synchronization effects in the dynamical behavior of elevators

Physical Review E 50, 2654-2659

(1994)

 

Recurrent clogging and density waves of granular material flowing through a narrow pipe

Journal de Physique I France 4, 499-506

(1994)

 

Correlation functions, entropy, and word distribution of information-carrying sequences

(1994)

 

On the hypercube structure of the genetic code

Proc. 3. Int. Conf. on Bioinformatics and Genome Research (Lim, H. A. and Cantor, C. A.), 445, World Scientific, Singapore

(1994)

Research Projects
Abstract

A representation of the genetic code as a six-dimensional Boolean hypercube is proposed. It is assumed here that this structure is the result of the hierarchical order of the interaction energies of the bases in codon-anticodon recognition. The proposed structure demonstrates that in the genetic code there is a balance between conservatism and innovation. Comparing aligned positions in homologous protein sequences two different behaviors are found: a) There are sites in which the different amino acids present may be explained by one or two „attractor nodes“ (coding for the dominating amino acid(s)) and their one-bit neighbors in the codon hypercube, and b) There are sites in which the amino acids present correspond to codons located in closed paths in the hypercube. The structure of the code facilitates evolution: the variation found at the variable positions of proteins do not corresponds to random jumps at the codon level, but to well defined regions of the hypercube.

Materials
 

Computer simulieren verstopfte Rohre

KFA intern 24, 3-4

(1993)

 

Granular material flowing down an inclined chute: A molecular dynamics simulation

Journal de Physique II France 3, 27-40

(1993)

 

A vectorized algorithm for molecular dynamics of short range interacting particles

International Journal of Modern Physics C 4, 1049-1057

(1993)

 

Static friction phenomena in granular materials: Coulomb law versus particle geometry

Physical Review Letters 71, 3963-3966

(1993)

 

A simple geometrical model for solid friction

Physica A 198, 441-448

(1993)

 

Computer simulations of clogged pipes

KFA-Intern, 24, 3-4

(1993)

Research Projects
Abstract

Im Höchstleistungsrechenzentrum wurde der Fluß von granularen Medien durch Rohre auf dem Computer simuliert. Dabei wurde die Ausbildung von unregelmäßigen Dichtewellen entdeckt und in einem Videofilm sichtbar dargestellt. Experimente bestätigen diese Simulationsrechnungen. In der industriellen Anwendung stellen solche Stoßwellen, z.B. beim Ausfluß von Silos, schon lange ein großes Problem dar.

 

Selforganization of nonlinear networks and applications to information processing

Neurocomputers and Attention II: Connectionism and neurocomputers (Holden, A. V. and Kryukov, V. I.), 615-627. Manchester: Manchester University Press.

(1991)

 

Neural Networks

Nachrichten Neuronale Netze der Fachgruppe 0.1.3., 3

(1991)

Research Projects
 

Non-linear neural networks and their application in information processing (in German)

Humboldt University, Berlin

(1990)

Research Projects
 

Modelling neural networks

Manuskripte der Humboldt-Universität 1, 46-57

(1989)

Research Projects
 

Simulation of network machines

Dynamical Networks (Ebeling, W. and Peschel, M.), 128-137. Berlin: Akademie-Verlag.

(1989)

 

Mechanisms of photo synthesis - kinetic modelling

Manuskripte der Humboldt-Universität, 2, 35-49

(1989)

Research Projects
 

Algorithm and electronic device for the deterministic or probabilistic generation of discrete output fields from discrete input fields (in German)

Patent DD 270 161 A1

(1988)

Research Projects
Materials
 

Device and algorithms for learning processes using parallel digital computers (in German)

DD 270 162 A1

(1988)

Research Projects
Materials
 

Simulation of neural networks

Parcella'88 (Wolf, G. and Legendy, T. and Schendel, U.). Berlin: Akademie-Verlag.

(1988)

 
  • Peter Bergmann
  • Jörg Keller
  • Sylvia Melitta Müller
  • Wolfgang J. Paul
  • Thorsten Pöschel
  • Oliver Schlüter
  • Wolfgang Thiele

Implementierung eines informationstheoretischen Ansatzes zur Bilderkennung

Innovative Informations-Infrastrukturen, I.I.I.-Forum (Gollan, B. and Paul, W. J. and Schmitt, A.), 187-197. Saarbrücken.

(1988)