[megacrout]

Hi,

I am getting confused about the units used in OpenFOAM for some parameters, especially p and phi.

1. p has to be given with units m2/s2 in simpleFoam (which actually are the units of p/rho) but with the usual units kg/m/s2 in reactingFoam for example.
I´m pretty sure this has something to do with incompressibility but I am not quite sure and I don´t get why it is programmed this way.

2. phi is rho.U (e.g. User Guide 1.7.1 p.115 or 2.0.0 p.118), right? It thus should have units kg/m2/s but has units m3/s in the time step folders. why is that so?
This question might result from a bad understanding of what phi is. Complementary information about it too would be appreciated.

Thanks for your help.

Tibo