Dear FOAM'ers, do anyone know
Dear FOAM'ers, do anyone know about steady state velocity - pressure coupling algo for all mach number (or for Ma>0.3)?
In literature, i found, that for Ma > 0.3 pressure equation becomes convective-diffusive. After looking to OpenFOAM sources i understand that all of them implements only transient algo for pressure equation of form ddt(psi*p) + div(psi*U*p) - laplacian(rho/A * p) = 0 Trying to use relaxation technique for equation div(psi*U*p) - laplacian(rho/A * p) gave nothing (solution diverges) The only way i found is algo in rhoPimpleFoam, but it is still affected by Co number... any help or suggestions appreciated many thanks |
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