[sasanghomi]

Dear friends,

I was simulating fluid flow inside a duct with a parallel solver and after reaching the convergence condition, I continued the simulation with a serial solver. That was extremely shocking that the result of my simulation changed to a great extent at the very first iterations and remained at the same value. (I was monitoring heat transfer coefficient)

What is the source of this huge difference? Which result is more trustworthy? Incidentally, I changed the mesh a couple of times and unfortunately there was the same problem again.

Any idea is appreciated.

BR
Sasan Ghomi