Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Gerald H. Ristow"'
Autor:
Andreas Horras, Gerald H. Ristow
Publikováno v:
International Journal of Modern Physics C. 12:1023-1033
The settling dynamics of cylinders in a viscous Newtonian fluid are investigated numerically using an iterative finite difference scheme, which uses a nonuniformly spaced staggered grid. Special attention is given to the details of the spatial discre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::933426dde166cace971d245e209fc4f3
https://doi.org/10.1142/s0129183101002309
https://doi.org/10.1142/s0129183101002309
Autor:
C. M. Dury, Gerald H. Ristow
Publikováno v:
Europhysics Letters (EPL). 48:60-65
We investigate the interplay of radial size and density segregation in a three-dimensional cylinder numerically. By fixing the size ratio of a binary particle mixture and varying the density of the smaller particle, we find a very surprising segregat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc9c8d50831aa04f6ea3b25364452a9f
https://doi.org/10.1209/epl/i1999-00114-3
https://doi.org/10.1209/epl/i1999-00114-3
Autor:
Christian M. Dury, Gerald H. Ristow
Publikováno v:
Granular Matter. 1:151-161
We study the interface dynamics of a binary particle mixture in a rotating cylinder numerically. By considering only the particle motion in axial direction, it is shown that the initial dynamics can be well described by a one-dimensional diffusion pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6f95571ffe5ec16f0308aabaf8c9e5a
https://doi.org/10.1007/s100350050022
https://doi.org/10.1007/s100350050022
Publikováno v:
Physical Review Letters. 79:833-836
Horizontal vibration of a granular material is studied experimentally and by means of molecular dynamics simulations. We focus on the transition from a more solidlike behavior of the granulate, which is obtained at small driving velocities, to a more
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f235fd8457255dfb50896ec5aac69bc
https://doi.org/10.1103/physrevlett.79.833
https://doi.org/10.1103/physrevlett.79.833
Autor:
Christian M. Dury, Gerald H. Ristow
Publikováno v:
Journal de Physique I. 7:737-745
We simulate the size segregation of a binary mixture of granular material in a half filled two-dimensional rotating drum using the discrete elements method with linear contact forces. The dynamics of the segregation process is studied in detail as fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fd05ba2697f1e73980506ff04c5edb8
https://doi.org/10.1051/jp1:1997188
https://doi.org/10.1051/jp1:1997188
Autor:
Gerald H. Ristow
Publikováno v:
Physical Review E. 55:2808-2813
Using finite difference methods, we study numerically the dynamics of a single spherical object (cylinder) in a two-dimensional box filled with viscous fluid under the influence of gravity. The algorithm is validated using the analytic result of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::139790c0be3962c1e24c9254062f1a06
https://doi.org/10.1103/physreve.55.2808
https://doi.org/10.1103/physreve.55.2808
Autor:
Gerald H. Ristow
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 235:319-326
We investigate how the discharge process in a two-dimensional hopper depends on various material and geometrical parameters. We use a molecular-dynamics-type simulation technique which allows for the rotation of the particles and use suitable paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0b3ab3f14d048d0bdf2ac2f146e604c
https://doi.org/10.1016/s0378-4371(96)00365-2
https://doi.org/10.1016/s0378-4371(96)00365-2
Autor:
Gerald H. Ristow
Publikováno v:
Computer Physics Communications. 99:43-52
Using finite difference methods, we study the dynamics of a single spherical object in a two-dimensional box filled with viscous fluid under the influence of gravity. The algorithm is validated using experimental and analytic results. Special emphasi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dde089e34506594fbc99a435a704104
https://doi.org/10.1016/s0010-4655(96)00107-5
https://doi.org/10.1016/s0010-4655(96)00107-5
Publikováno v:
International Journal of Modern Physics C. :543-561
We present a numerical method to deal efficiently with large numbers of particles in incompressible fluids. The interactions between particles and fluid are taken into account by a physically motivated ansatz based on locally defined drag forces. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e653ee7930306c12a8368e33c8ad407
https://doi.org/10.1142/s0129183196000466
https://doi.org/10.1142/s0129183196000466
Autor:
Gerald H. Ristow
Publikováno v:
Europhysics Letters (EPL). 34:263-268
The dynamics of granular materials in a two-dimensional rotating drum are investigated numerically. The velocity profiles parallel and perpendicular to the inclined surface are calculated and the dependence of the width of the fluidized layer on exte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac21f16e35f696ac92edb64b749a7fec
https://doi.org/10.1209/epl/i1996-00109-0
https://doi.org/10.1209/epl/i1996-00109-0