[HAdi]

You are right if I use ParticleAdvectionDiffusionBGK(VELOCITY, VELOCITY2) (D3Q7 <VELOCITY, VELOCITY2>) with 2 velocity profile. The second velocity profile as long as I understand is used to determine drag force on the particles. However, in my case I do not want to consider this, so I used AdvectionDiffusionBGK(VELOCITY) (D3Q7 <VELOCITY>) with only one velocity field. Do I miss something?

[HAdi]

I worked with it, and I could run my problem with this example successfully, but when I do not want to solve the fluid flow (Navier Stokes) and defied the velocity field, I face problem. Could you please help me in this regard.

Thanks,
Hadi

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