Thank you for your reply, I was already aware of the possibility offered by Chrono, but I necessarily have to continue using DEM, since my entire master’s thesis was developed on it. By customizing the CUDA kernels, I was able to implement a thermal model and modify the electrostatic one. The goal was to build a comprehensive regolith model, not just a mechanical one, and moving to Chrono would mean losing this work. For my PhD, I will also need to extend what I have done so far to include interactions with plasma, which makes it essential to keep the electrostatic model. Thank you again for your response and for the suggestion regarding DEM-LBM. I now look forward to any comments from Ruochun as well.
Best regards, Sabrina Il giorno giovedì 21 agosto 2025 alle 18:46:13 UTC+2 Dan Negrut ha scritto: > 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 <(608)%20772-0914> > > http://sbel.wisc.edu/ > > http://projectchrono.org/ > > --------------------------------------------- > > > > *From:* projec...@googlegroups.com <projec...@googlegroups.com> *On > Behalf Of *Sabrina Lanfranco > *Sent:* Thursday, August 21, 2025 11:36 AM > *To:* ProjectChrono <projec...@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 projectchron...@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/3c1d945b-ebc7-45c4-aced-cdfe5bc1e9bdn%40googlegroups.com.
