[zahrae]

In order to study particle deposition in a 90° bend pipe. I used the RNG turbulence model along with the EWT, particles were tracked by the DPM, including the turbulent fluctuation effect using the DRW model.

the problem is within the obtained results, the RNG and DRW are known to overestimate the particle deposition rate. However, the turbulent dispersion effect is neglected in my case. For a particle with dp=2µm, instead of getting a value of 10% or a value beyond this value, I get 5% as deposition efficiency.

In my simulation, I used a hexahedral mesh with an inflation layer, y+=0.6.
for the RNG model, I used the swirl-dominated flow and the differential viscosity modification options but the results were the same.

Can anyone provide help or guidelines?
Thank you!

Best regards.