How to set Chrono mu(I) rheology parameters (e.g., average_diam, mu_fric_s) for granular flow in DualSPHysics?

[Alex Smofan]

I'm trying to simulate granular flow using the DualSPHysics-Chrono coupling. According to the Chrono API documentation (https://api.projectchrono.org/group__fsisph.html), the mu(I) rheology is supported via RheologyCRM::MU_OF_I and its parameters (like average_diam, mu_fric_s) should be set in C++ through structures like ElasticMaterialProperties or similar.

However, I cannot find these parameters in the DualSPHysics XML files. Is there a way to specify these mu(I) parameters in the XML, or is modifying the source code the only option to activate and calibrate this model for a coupled simulation? Any examples or guidance would be greatly appreciated.

[Radu Serban]

CRM (and the mu(I) rheology) is a feature of Chrono::SPH. That has nothing to do with DualSPHysics!

DualSPHysics does its own fluid simulation and uses Chrono only for the MBD part of an FSI problem.

 

If you want to use CRM, you will have to use Chrono::FSI-SPH, not the DualSPHysics-Chrono code.

 

--Radu

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