[gcengineer]

Sometimes the dimension of pressure is specified differently in 0/p file for different problems:

tutorials/basic/potentialFoam/cylinder
dimensions [0 2 -2 0 0 0 0];

tutorials/compressible/rhoSimpleFoam/angledDuctExplicitFixedCoeff
dimensions [1 -1 -2 0 0 0 0];

What tips me off to the correct dimension to use for a particular problem?

Is there a general rule for the correct dimension of pressure in 0/p file? Is it simply a matter of whether the problem is 2D or 3D? Compressible or incompressible?

I see that (M/LT2)/(M/L3) = L2/T2.

Thanks.