Limitation of stochastic rotation dynamics to represent hydrodynamic interaction between colloidal particles
Stochastic Rotation Dynamics (SRD) is a valuable numerical tool extensively used in many domains of hydrodynamics simulations including colloidal suspensions. We investigate the dynamics of two colloidal particles in the regime of low Reynolds number by means of SRD in 3D. In contrast to well-known...
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| Veröffentlicht in: | Physics of fluids (1994) 2018-01, Vol.30 (1) |
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| container_title | Physics of fluids (1994) |
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| creator | Shakeri, Ali Lee, Kuang-Wu Pöschel, Thorsten |
| description | Stochastic Rotation Dynamics (SRD) is a valuable numerical tool extensively used in many domains of hydrodynamics simulations including colloidal suspensions. We investigate the dynamics of two colloidal particles in the regime of low Reynolds number by means of SRD in 3D. In contrast to well-known analytical and experimental results, no long-range interaction between the suspended particles could be found, independent of the size of the particles and the Mach and Péclet numbers. We attribute this behavior to the compressible nature and low sound velocity in the SRD solvent. The inability of representing long-range interactions poses an important limitation to the applicability of SRD to certain physical systems. We provide an estimation of typical length scales for which SRD can be applied. |
| doi_str_mv | 10.1063/1.5008812 |
| format | Article |
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We investigate the dynamics of two colloidal particles in the regime of low Reynolds number by means of SRD in 3D. In contrast to well-known analytical and experimental results, no long-range interaction between the suspended particles could be found, independent of the size of the particles and the Mach and Péclet numbers. We attribute this behavior to the compressible nature and low sound velocity in the SRD solvent. The inability of representing long-range interactions poses an important limitation to the applicability of SRD to certain physical systems. 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We investigate the dynamics of two colloidal particles in the regime of low Reynolds number by means of SRD in 3D. In contrast to well-known analytical and experimental results, no long-range interaction between the suspended particles could be found, independent of the size of the particles and the Mach and Péclet numbers. We attribute this behavior to the compressible nature and low sound velocity in the SRD solvent. The inability of representing long-range interactions poses an important limitation to the applicability of SRD to certain physical systems. 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| ispartof | Physics of fluids (1994), 2018-01, Vol.30 (1) |
| issn | 1070-6631 1089-7666 |
| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Acoustic velocity Colloids Compressibility Computational fluid dynamics Computer simulation Domains Fluid dynamics Fluid flow Hydrodynamics Physics Reynolds number Rotation |
| title | Limitation of stochastic rotation dynamics to represent hydrodynamic interaction between colloidal particles |
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