6533b831fe1ef96bd12997fb

RESEARCH PRODUCT

Application of Tunable-Slip Boundary Conditions in Particle-Based Simulations

Olga I. VinogradovaOlga I. VinogradovaOlga I. VinogradovaJens SmiatekFriederike SchmidEvgeny S. AsmolovEvgeny S. AsmolovJiajia Zhou

subject

Physics::Fluid DynamicsInformation retrievalColloidal particleComputer scienceDissipative particle dynamicsSlip (materials science)MechanicsBoundary value problemCouette flowMicroscopic scale

description

Compared to macroscopic systems, fluids on the micro- and nanoscales have a larger surface-to-volume ratio, thus the boundary condition becomes crucial in determining the fluid properties. No-slip boundary condition has been applied successfully to wide ranges of macroscopic phenomena, but its validity in microscopic scale is questionable. A more realistic description is that the flow exhibits slippage at the surface, which can be characterized by a Navier slip length. We present a tunable-slip method by implementing Navier boundary condition in particle-based computer simulations (Dissipative Particle Dynamics as an example). To demonstrate the validity and versatility of our method, we have investigated two model systems: (i) the flow past a patterned surface with alternating no-slip/partial-slip stripes and (ii) the diffusion of a spherical colloidal particle.

yearjournalcountryeditionlanguage
2014-12-16
https://doi.org/10.1007/978-3-319-10810-0_2