Index  

Lambda-viscosity
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DESCRIPTION

Lambda-viscosity stands for the "viscosity" in an expanding flow. It describes the flow resistance in an expansion. Mu-viscosity and lambda-viscosity are linked to the two Lame coefficients. For a divergence free flow, the term associated to the lambda-viscosity disappears from the momentum equation.

The current value of lambda-viscosity, -2/3*mu(T) where mu(T) represents mu-viscosity. The value of the alpha coefficient may be modified by the user.

lamda-viscosity = alpha * mu-viscosity

Default : alpha = - 2/3.

  OPTIONS
-1
 Upper level menu
The current value is accepted
1
 Modification of alpha
The current value of alpha is modified
SEE ALSO