[Jonathan_Thilo]

Hi All,

I have experienced something very odd in Star CCM+.
I'm running a simulation with morphing and AMR. (AMR is setup for a mass fraction, "mesh adaption for reacting flows" and for the morphing mesh [a maximum cell volume criteria]).

For example let's call the simulations sim1 and sim2.

sim1 is the base case when only a few reports and such.
sim2 is the exact same as sim1 besides that a couple of new reports and scenes are added.

I have used the "compare" tool in star CCM+ to make sure all settings actually are the same.

I experience that the simulations differ.
This is in all matter. number of cells (over time - AMR), pressures, heat release etc.

Have any of you experienced this before, and what could the explanation be? My wildest guess is that the AMR does something random.

Thanks in advance