[kumar]

Hello everybody,
I have been using OF-1.5, interFoam and lesInterFoam for my project work. Recently I also installed the OF-1.6.x and ran some preliminary simulations.

I find that there is a difference in the output pressure between the two versions of OF-1.6.x and OF-1.5.
In OF-1.5 the output is pd and in OF-1.6.x it is p.
But I still have some problem in understanding pd in OF-1.5. WHAT exactly is the formulation for this pd. And also as OF uses relative pressure, where do I specify this reference pressure. And id i dont specify this reference pressure, what value does it take by default. I want to make this clear because when i run the damBreak case of OF-1.5 and OF-1.6.x and then i plot pd aand p respectively. I see negative pressures in both of them, which may be correct given the reference pressure is atmospheric pressure.

Or may be i am not understanding it properly.
Can anybody explain the exact formulation of the p and pd that is written in the solution file after a interFoam calculation.
bye
with regards
K.Suresh kumar