Class
Foam::filmSurfaceVelocityFvPatchVectorField
Description
Film surface velocity boundary condition
Evaluates the surface velocity from the shear imposed by the neighbouring
fluid velocity using a simple drag model based on the difference between the
fluid and film velocities multiplied by the coefficient \c Cs. This simple
model is used in preference to the standard viscous shear stress model in
order to provide some means to include the drag enhancing effect
of surface ripples, rivulets etc. in the film surface.
Usage
\table
Property | Description | Required | Default value
Cs | Fluid-film drag coefficient | yes |
\endtable
Example of the boundary condition specification:
\verbatim
<patchName>
{
type filmSurfaceVelocity;
Cs 0.005;
}
\endverbatim
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