Dear developer, I found the gidaspow-ganser model in the code file of the SQP drag model, but there is no option for it in the GUI. When I set the fluidized bed to be filled with spherical particles, using the SQP model, compared with the Di Felice Ganzer hybrid drag model and Di Felice Holzer/Sommerfeld hybrid drag model, I chose to modify the code and use the gidaspow-ganser hybrid drag model to obtain a more consistent fluidization effect with the experiment. I would like to know why this option is not provided in the GUI and what special reasons are there?
This is the first I’ve seen the DRAG_SQP_GIDASPOW_ganser subroutine. It’s not supported in the GUI, and there’s also no keyword to select this model and nothing in the solver code calls this subroutine. It’s also not mentioned in the MFiX specification. I will try to find out for you why it’s not documented or otherwise exposed to users. Are you getting good results with this drag model?
Xi Gao, the author of the SQP model, says that this drag model does not perform well, and does not suggest using it. He furthermore recommended removing it from the source code. However you are free to continue using it if you want! Let us know if you get any good results.
Thanks for the help! If this drag model gives me solid results, I’ll back here to share the results.