[Erfan-s]

Hello
Good time
I am investigating the transport of suspended sediment in a simple channel, the sediment diameter is 0.000217 m and the inlet concentration is 14.066 kg/m3 and the inlet velocity is 0.3835 m/s and I am simulating through the sediment scour model. And the RNG disturbance model and the mesh size is 0.011m, I have a lot of errors at the relevant measurement point near the bed and water surface, where is my problem? I made the cell smaller, but I still have an error