TY  - JOUR
AU  - Götze, I.
AU  - Noguchi, H.
AU  - Gompper, G.
TI  - Relevance of angular momentum conservation in mesoscale hydrodynamics simulations
JO  - Physical review / E
VL  - 76
IS  - 4
SN  - 1539-3755
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-58629
SP  - 046705
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - The angular momentum is conserved in fluids with a few exceptions such as ferrofluids. However, it can be violated locally in fluid simulations to reduce computational costs. The effects of this violation are investigated using a particle-based simulation method, multiparticle collision dynamics, which can switch on or off angular-momentum conservation. To this end, we study circular Couette flows between concentric and eccentric cylinders, where nonphysical torques due to the lack of the angular-momentum conservation are found whereas the velocity field is not affected. In addition, in simulations of fluids with different viscosities in contact and star polymers in solvent, incorrect angular velocities occur. These results quantitatively agree with the theoretical predictions based on the macroscopic stress tensor.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000250622100092
DO  - DOI:10.1103/PhysRevE.76.046705
UR  - https://juser.fz-juelich.de/record/58629
ER  -