rhoSimplecFoam convergence issues
 

Having had some problems with the convergence of rhoSimplecFoam for a Mach=0.7 case, I found some relaxation factors which seem to work well:

relaxationFactors
{
fields
{
p 0.3;
rho 0.1;
}
equations
{
U 0.7;
h 0.7;
k 0.5;
omega 0.5;
}
}