This title appears in the Scientific Report :
2015
Please use the identifier:
http://hdl.handle.net/2128/8979 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevE.92.013301 in citations.
Effect of angular momentum conservation on hydrodynamic simulations of colloids
Effect of angular momentum conservation on hydrodynamic simulations of colloids
In contrast to most real fluids, angular momentum is not a locally conserved quantity in some mesoscopic simulation methods. Here we quantify the importance of this conservation in the flow fields associated with different colloidal systems. The flow field is analytically calculated with and without...
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Personal Name(s): | Yang, Mingcheng (Corresponding author) |
---|---|
Theers, Mario / Hu, Jinglei / Gompper, Gerhard / Winkler, Roland G. / Ripoll, Marisol | |
Contributing Institute: |
Theorie der Weichen Materie und Biophysik; IAS-2 Theorie der Weichen Materie und Biophysik; ICS-2 |
Published in: | Physical Review E Physical review / E, 92 92 (2015 2015) 1 1, S. 013301 013301 |
Imprint: |
College Park, Md.
APS
2015
2015-07-02 2015-07-01 |
DOI: |
10.1103/PhysRevE.92.013301 |
Document Type: |
Journal Article |
Research Program: |
Functional Macromolecules and Complexes |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevE.92.013301 in citations.
In contrast to most real fluids, angular momentum is not a locally conserved quantity in some mesoscopic simulation methods. Here we quantify the importance of this conservation in the flow fields associated with different colloidal systems. The flow field is analytically calculated with and without angular momentum conservation for the multiparticle collision dynamics (MPC) method, and simulations are performed to verify the predictions. The flow field generated around a colloidal particle moving under an external force with slip boundary conditions depends on the conservation of angular momentum, and the amplitude of the friction force is substantially affected. Interestingly, no dependence on the angular momentum conservation is found for the flow fields generated around colloids under the influence of phoretic forces. Moreover, circular Couette flow between a no-slip and a slip cylinder is investigated, which allows us to validate one of the two existing expressions for the MPC stress tensor. |