Thank you Ruochun for letting me know. One more thing: when can we expect to see the demo script of the Goldenberg test example in the repo? I don't think it is there.
Thanks, Prabhat On Tuesday, April 30, 2024 at 5:26:15 AM UTC-7 Ruochun Zhang wrote: > Hi Prabhat, > > It's published and can be found here > https://www.sciencedirect.com/science/article/pii/S001046552400119X?via%3Dihub > > Thank you, > Ruochun > > On Wednesday, April 3, 2024 at 3:27:46 AM UTC+8 [email protected] wrote: > >> Hi Ruochun, >> >> Thank you so much for your response. I would very much appreciate it if >> you notify me once the paper gets published. >> >> Thanks, >> Prabhat >> >> On Tuesday, March 26, 2024 at 3:29:16 AM UTC-7 Ruochun Zhang wrote: >> >>> Hi Prabhat, >>> >>> To answer your question: You probably see a warning in your output file, >>> """" >>> WARNING! At least one clump is initialized with a position out of the >>> box domain you specified. >>> It is found at 0.378, 0, 0.076383 (this message only shows one such >>> example). >>> This simulation is unlikely to go as planned. >>> """ >>> This is the problem. It appears that the points you sampled live in >>> x∈[0, 0.4], but the x range of your simulation world is defined as >>> something like [-0.25, 0.25]. This will make the particles to be >>> initialized in unexpected locations, cause large initial penetrations, and >>> then destabilize the simulation. I fixed the world size definition, and it >>> seems to fix the problem. The extremely fine step size you are using is not >>> necessary: The physics in this simulation is simple. >>> >>> By the way, in the upcoming paper about DEME >>> <https://arxiv.org/abs/2311.04648>, we will include a Goldenberg test >>> example, and provide the associated demo script. If you want, we can let >>> you know when it is officially published. >>> >>> Thank you, >>> Ruochun >>> On Tuesday, March 26, 2024 at 1:41:58 AM UTC+8 [email protected] wrote: >>> >>>> Hello everyone, >>>> >>>> I have been trying to replicate the 2D Goldenberg et al experiment >>>> <https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.89.084302> in >>>> DEME. It was replicated as a validation study for Chrono::GPU (as >>>> described >>>> in the 2021 paper <https://doi.org/10.3390/pr9101813>), so I figured >>>> it could be easily done in DEME too. However, I am having some issues with >>>> generating particles and having them settle under gravity. I have been >>>> using a nested for loop to generate the initial positions of particles and >>>> while I don't have any issues with the generation of positions (see >>>> attached paraview screenshot), I encounter the excessive velocity run-time >>>> error while settling the particles under gravity. I have tried to decrease >>>> the step size, increase the box domain dimensions to eliminate boundary >>>> effects, relax the physics (decrease the Young's modulus of the terrain), >>>> and increased the initial safety distance of the particles to no avail. >>>> >>>> I have attached my code to this message and I have been modifying the >>>> 2D ball drop demo. >>>> >>>> Thanks and regards, >>>> Prabhat >>>> >>> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/f25f1d60-ca4c-4988-82ea-3ba0c131d620n%40googlegroups.com.
