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| Home > Publications database > An efficient multiparticle collision dynamics approach to immiscible binary fluids: Hydrodynamics and application to membrane protein diffusion |
| Home > Publications database > An efficient multiparticle collision dynamics approach to immiscible binary fluids: Hydrodynamics and application to membrane protein diffusion |
| Poster (After Call) | FZJ-2022-02304 |
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2022
Abstract: We present a multiparticle collision dynamics (MPC) implementation of layered immiscible fluids A and B of different shear viscosities separated by planar interfaces[1]. The simulated shear flow profile, and the time-dependent shear stress functions, are in excellent agreement with our continuum hydrodynamics results for the composite fluid. The wave-vector dependent transverse velocity auto-correlation functions in the bulk-fluid regions of the layers decay exponentially, and agree with those of single-phase isotropic MPC fluids. In addition, we determine the hydrodynamic mobilities of an embedded colloidal sphere moving steadily parallel or perpendicular to a fluid-fluid interface, as functions of the distance from the interface. The obtained mobilities are in good agreement with hydrodynamic force multipoles calculations for a no-slip sphere moving under creeping flow conditions near a clean, ideally flat interface. Moreover, we discuss our preliminary simulation results for a simple model of G protein-coupled receptors diffusing alongside a coarse-grained membrane based on a layered binary fluid model. The results show that this model is computationally efficient and feasible to study the diffusion of interacting membrane proteins over extended time and length scales[2].
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