[Shah Akib Sarwar]

Hi guys,

I am a new user of dsmcFoam and I am trying to do a 2D simulation of a rocket plume impinging on the ground. I have been using the wedge15Ma5 tutorial to learn the details of the dsmcFoam solver, but there is one thing I am a bit confused about. Even though the tutorial is clearly for a 2D flow, as the z dimension is changed, the number of dsmc particles inserted into the domain changes as well. Although the final results do not vary very significantly, the contours for macroscopic properties (temperature, pressure etc.) seem to be much smoother with a larger z dimension (as a result, more dsmc particles inserted). Can anyone guide me on how to choose a proper z dimension for a 2D flow analysis with dsmcFoam (or even tell me whether it actually matters or not)?

Thank you!

[Shah Akib Sarwar]

Any ideas?