Tunable-slip boundaries for coarse-grained simulations of fluid flow
Smiatek, J., Allen, M. P. and Schmid, F.. (2008) Tunable-slip boundaries for coarse-grained simulations of fluid flow. European Physical Journal E. Soft Matter, Vol.26 (No.1-2). pp. 115-122. ISSN 1292-8941Full text not available from this repository.
Official URL: http://dx.doi.org/10.1140/epje/i2007-10311-4
On the micro- and nanoscale, classical hydrodynamic boundary conditions such as the no-slip condition no longer apply. Instead, the flow profiles exhibit "slip" at the surface, which is characterized by a finite slip length (partial slip). We present a new, systematic way of implementing partial-slip boundary conditions with arbitrary slip length in coarse-grained computer simulations. The main idea is to represent the complex microscopic interface structure by a spatially varying effective viscous force. An analytical equation for the resulting slip length can be derived for planar and for curved surfaces. The comparison with computer simulations of a DPD (dissipative particle dynamics) fluid shows that this expression is valid from full slip to no slip.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics
Q Science > QD Chemistry
|Divisions:||Faculty of Science > Physics|
|Library of Congress Subject Headings (LCSH):||Fluid dynamics, Fluid dynamics -- Mathematical models, Mathematical physics|
|Journal or Publication Title:||European Physical Journal E. Soft Matter|
|Number of Pages:||8|
|Page Range:||pp. 115-122|
|Access rights to Published version:||Restricted or Subscription Access|
Actions (login required)