I am currently working on simulating conduction within a small packed bed of uniformly sized spheres but having problems with building the geometry and meshing. If I try to form a union, some of the domains become unselectable. And while the alternitive option of forming an assembly doesn't have this problem, it introduces other issues and still refuses to mesh. The file I have attached is has 11 of the 60 spheres I use in my model enabled. 2 of these 11 spheres refuse to be selected if Form Union is used, and show weird things between them in the case of Form an Assembly. The goal is to be able to implement thermal contact BC's at the faces of contacts and either insulated/diffuse surface BC pretty much every where else. Preferably without haveing to manually use the GUI to go through and specify each of the 240+ contact locations manually. Ivar, if you can hear me, I am fully willing to sacrifice an undergrad from our lab upon an alter to you in exchange for your help.
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