How is the drag coefficient determined?
Hi.
I would like to add particle body force in EDEM and simulate movement due to drag.
There are four models of drag coefficient (Schiller and Naumann, Morsi and Alexander, Haider & Levenspiel, Ganser), but I would like to know how the drag coefficient is determined internally.
If you have any documents, could you please share them?
Also, is there a way to give a constant drag coefficient regardless of the Re number or other conditions?
Best Regards,
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Hi Shinichiro
Please check https://help.altair.com/edem/Bibliography.htm. If you scroll down to 'Lift and Drag Models', there are references of where the equations are taken.
To give a constant drag coefficient, you will have to use API within EDEM to do it. You can take a look at this reference, and modify it a bit to use constant drag: https://community.altair.com/community/en/edem-api-particle-body-force-field-data-coupling-choice-of-drag-models-with?id=kb_article&sysparm_article=KB0122101
Hope this helps.
Thanks,
Jerrin Job