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When I perform the coupled calculation of Fluent and Edem, if the particle size is larger than the fluid grid size, the calculation will diverge. Are there any methods to make this kind of situation be able to be calculated successfully?
Hi,
The Fluent coupling is only really designed for mesh volumes equal to or larger than the particle size. Reducing the Momentum and Volume Fraction under relaxation factors in Fluent does help with stability (I'd refer to the Fluent docs for details), this does essentially reduce the amount of volume/momentum transferred per time-step.
AcuSolve-EDEM has a volume smoothing method which allows particles larger than the mesh to be stabilised.
Regards
Stephen
Hello, can this method (volume smoothing method) be implemented in Fluent coupled with Edem, where the particle diameter is larger than the grid size of the flow field? If possible, how should I proceed?
Hi, It maybe possible but we don't have any specific examples of this. There is a coupling interface programming guide here:
https://2026.help.altair.com/2026/edem/topics/coupling_interface_programming_guide/introducing_the_coupling_interface_programming_guide_c.htm
Which outlines the available methods for coupling to EDEM but I can't really comment on requirements from Fluent. Regards
