more info here :
https://www.cfd-online.com/Forums...
# les-rasl
Lookid
08/12/2019, 4:43 PMmore info here :
https://www.cfd-online.com/Forums/openfoam-solving/59321-convection-discretization-schemes-les.html
The best available low dissipation second order schemes in OpenFOAM are filteredLinear and filteredLinear2. The filtering removes staggering caused by pressure-velocity decoupling by introducing small amounts of upwind. The type of mesh they are used on is not relevant, although the calculations will obviously be more accurate on hexes and less accurate on the same number of tets.