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[Bruno Chareyre <question269739@xxxxxxxxxxxxxxxxxxxxx>]

Question #269739 on Yade changed:
https://answers.launchpad.net/yade/+question/269739

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
Speaking of wall-sphere, the definition of symmetric sphere radius is in [1].
This functor could optionaly define the radius of the virtual sphere in a different way.
Something to check is if analyticaly the 2-sphere equation goes to sphere-wall equation asymptotically when the radius of one sphere is increased (it should, no?). In such case you would only have to assign a very large value to the virtual radius (1e8*sphereRadius) and you would get the correct result without changing anything else.

Note that Box/Facet are more maintained than Walls, so maybe you could
switch to them. A box with null thickness is a wall...

Bruno

[1]
https://github.com/yade/trunk/blob/master/pkg/dem/Ig2_Facet_Sphere_ScGeom.cpp#L196

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