>From what I understand, there are people trying similar things but there are no documents or working examples. It's in theory quite doable as DEME is designed for co-simulation, and you just write scripts that use DEME methods and OpenFOAM methods at the same time and that's it. If you are going to do it, you can use Chrono--DEME cosim examples <https://github.com/projectchrono/chrono-projects/tree/feature/DEME> here as inspiration.
Thank you, Ruochun On Thursday, September 12, 2024 at 11:34:46 PM UTC+8 [email protected] wrote: > Hi, touching > > Thank you for your reply. By the way, > are there any examples of co-simulation about DEME coupling to > CFD(OpenFOAM)? > > Best regards, > Wenxuan > Ruochun Zhang <[email protected]>于2024年9月12日 周四23:16写道： > >> In general, it should affect the efficiency insignificantly, since if you >> have too many templates (aka too many types of mass properties), the solver >> should automatically give up grouping and storing based on templates, and >> just store individual clump's mass properties. If you are very concerned >> then you can call *DisableJitifyMassProperties *to force this behavior. >> >> I don't feel I understand what you meant by "group the particles" based >> on their size ranges. Maybe you want to make sure that when you sample >> initial particles in a certain region, they fall into a specific range. In >> that case, you might store templates that resemble a range, say [2, 4], in >> a standalone vector. Then when sampling a region in your simulation domain, >> you pick templates only from this vector. >> >> Thank you, >> Ruochun >> >> On Thursday, September 12, 2024 at 12:56:24 PM UTC+8 [email protected] >> wrote: >> >>> Hi, Ruochun >>> >>> 1. If so many spherical particle templates are created, will it >>> affect the calculation speed? >>> 2. If I have particles with multiple particle size ranges, such as >>> [2 mm, 4mm], [4 mm, 6 mm], [6 mm, 8 mm], how can I group the particles >>> based on their particle size ranges? >>> >>> Thank you >>> Wenxuan >>> >>> 在2024年9月12日星期四 UTC+8 08:18:51<Ruochun Zhang> 写道： >>> >>>> Hi Wenxuan, >>>> >>>> You can use DEMdemo_BallDrop.cpp >>>> <https://github.com/projectchrono/DEM-Engine/blob/main/src/demo/DEMdemo_BallDrop.cpp> >>>> as >>>> an example and starting point. There, I created 11 templates with >>>> diameters >>>> ranging from 0.25cm to 0.35cm, then when instantiating particles, they >>>> randomly took one of the 11 templates. This is usually enough for >>>> emulating >>>> a size distribution. >>>> >>>> However, if you want "truly random" distribution in the range of [8 mm, >>>> 12mm], then you probably just have to generate random floating numbers in >>>> this range, then create a sphere template based on this number, then >>>> create >>>> a particle using this template, then repeat the process. In the end, you >>>> will have as many templates as particles, and each of them is different. >>>> DEME should support this as well (and if it complains, please let me >>>> know). >>>> From the simulation physics point of view, this is likely an overkill. >>>> >>>> Thank you, >>>> Ruochun >>>> >>>> On Wednesday, September 11, 2024 at 10:26:07 AM UTC+8 >>>> [email protected] wrote: >>>> >>>>> Hi, Ruochun >>>>> >>>>> I got a sphere particle template through the LoadSphereType >>>>> function. The diameter of the sphere particle template is 10 mm. How can >>>>> I >>>>> add particles with a diameter randomly distributed in the range of [8 mm, >>>>> 12mm] based on this spherical particle template? >>>>> >>>>> Best regards >>>>> Wenxuan XU >>>>> >>>> -- >> 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/36d78488-1e35-4c6a-8d93-56845e46b545n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/projectchrono/36d78488-1e35-4c6a-8d93-56845e46b545n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/6d5d34b0-0c87-4065-9c98-eba51b6ee9ean%40googlegroups.com.
