Boundary Conditions

From CIRPwiki
Revision as of 15:35, 22 July 2014 by Rdchldlj (talk | contribs) (Created page with "'''Boundary Conditions''' Wall Boundary Condition At closed boundaries, two boundary conditions are applied. The first is zero flow normal to the boundary, and the second i...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Boundary Conditions

Wall Boundary Condition

At closed boundaries, two boundary conditions are applied. The first is zero flow normal to the boundary, and the second is the tangential shear stress due to flow parallel to the wall boundary. In CMS, two boundary conditions are available for tangential flow to walls. The first is a free-slip boundary condition in which the tangential shear stress set to zero, and the second is partial-slip boundary condition in which a friction term is included by assuming a log-law for a rough wall.

(2-34)

where is the wall friction coefficient equal to