Erosion of particle diameter related to Oka erosion model
 

Hello friends, good time
I am performing erosion on a elbow with the help of Ansys Fluent software. I use the Oka erosion model (absolutely the software itself) and in the stage of validation of the results, the data related to the diameter of the sand (SiO2) particles with a size of 300 microns is satisfactory compared to the experimental results, but with the change of the diameter to the size 150 microns does not give good results and is far from the experimental results. I solve flow and particles in steady state, RSM turbulence model, one-way coupling and surface injection.
Should I change in the parameters of the wear model(According to the attached photo) or other settings of the Fluent software so that the numerical results with a diameter of 150 microns are closer to experimental results!? Or do you have a better suggestion to solve this problem???
Thank you in advance
Attachment 96917

Ahmed Veis