Simulate with complex geometries and complex physics
COMP_facSmooth_Eta
parameter for weight kernel definition for smoothing of viscosity and density(UCV)
COMP_facSmooth_Eta = 6.0
Default: COMP_facSmooth_Eta = 3.0
This parameter specifies \( c\) in the equation below which defines the weighting kernel used in the smoothing of the effective, total viscosities and density.
\begin{align} W_{ij} = \exp\left( -c_{\text{}} \cdot \frac{({\bf x}_j-{\bf x}_i)^2}{\frac{1}{2}(h_j^2+h_i^2)} \right)\end{align}
Note: - The bigger the value of COMP_facSmooth_Eta, the more narrow the kernel and the less points in the neighborhood are considered for smoothing.
- The number of smoothing cycles is defined by COMP_nbSmooth_Eta.
| This item is referenced in: | |
|---|---|
| %ind_ETA_sm% | total viscosity, consisting of physical, turbulent, and additional numerical viscosities; unit: Pa*s |
| COMP_facSmooth_Eta | parameter for weight kernel definition for smoothing of viscosity and density. For the darcy constant this value is set to 6.0 (CV) |
| COMP_facSmooth_Eta | parameter for weight kernel definition for smoothing of viscosity (UCVO) |
| COMP_facSmooth_Eta | parameter for weight kernel definition for smoothing of viscosity and density(UCV) |
| COMP_nbSmooth_Eta | number of smoothing cycles for effective, total viscosity and smoothed density (UCV) |