Sabrina, In theory, you can do this in the SPH solver in Chrono, hopefully my colleague Radu will comment on this. It’d require very large sim times because the number of SPH particles would be really large, which is needed to capture the dynamics of the grains. Another way to do it is DEM-LBM. Chrono has no support for this, and no plan to implement in the immediate future. The sim times would probably be very long, but it’d be a nice approach. If Ruochun sees this, he might comment on this idea. Lastly, you can homogenize this and represent the regolith–fluid interactions through a continuum and then use the CRM solver in Chrono. You’d need to have the right material model, which means that you’ll have to go beyond the hypo-elastoplastic material model that we have there right now (Drucker-Prager plasticity, with no cap). Dan --------------------------------------------- Bernard A. and Frances M. Weideman Professor NVIDIA CUDA Fellow Department of Mechanical Engineering Department of Computer Science University of Wisconsin - Madison 4150ME, 1513 University Avenue Madison, WI 53706-1572 608 772 0914 http://sbel.wisc.edu/ http://projectchrono.org/ ---------------------------------------------
From: projectchrono@googlegroups.com <projectchrono@googlegroups.com> On Behalf Of Sabrina Lanfranco Sent: Thursday, August 21, 2025 11:36 AM To: ProjectChrono <projectchrono@googlegroups.com> Subject: [chrono] DEM-Engine SPH model integration Hello everyone, I am currently using DEM-Engine to model planetary regolith in scenarios involving interactions with space exploration objects. I would now like to extend this modeling to include the study of regolith–fluid interactions. In your opinion, what would be the most convenient approach: integrating DEM with a solver such as DualSPHysics, or directly implementing a fluid model within DEM itself? In both cases, this would require modifications to the DEM codebase. That is why I am writing here, hoping to get some feedback from the developers: perhaps there is already something undocumented, or maybe you have already considered an approach in this direction. -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to projectchrono+unsubscr...@googlegroups.com<mailto:projectchrono+unsubscr...@googlegroups.com>. To view this discussion visit https://groups.google.com/d/msgid/projectchrono/fa00b521-e8a1-4dd6-be54-7e37358cd230n%40googlegroups.com<https://urldefense.com/v3/__https:/groups.google.com/d/msgid/projectchrono/fa00b521-e8a1-4dd6-be54-7e37358cd230n*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!Mak6IKo!NWYNqoiUNqQ1gbNA5zSq-hOk7tPnfhQg71_vbAlrHiTOtSqPfwXJytliXNnuGCi9xLpRYSrf2glwAO78v2X2$>. -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to projectchrono+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/projectchrono/DM8PR06MB770333AE4EB2381D346B7584B132A%40DM8PR06MB7703.namprd06.prod.outlook.com.
