<![CDATA[Assigning boundary conditions to an arbitrary object]]>Hello,
I wanted to simulate a case where inside my simulation volume i have a sphere which has absorbing boundary conditions.
Additionally i still want to keep the planes defined before for the boundary conditions.
I tried to drag and drop the sphere but it doesn't work.
Is such simulation case possible ?
0_1540464635216_6aea9918-3ef1-4066-812a-73dbfb554ec9-image.png

]]>https://forum.zmt.swiss/topic/80/assigning-boundary-conditions-to-an-arbitrary-objectRSS for NodeTue, 18 Aug 2026 15:07:32 GMTThu, 25 Oct 2018 10:51:39 GMT60<![CDATA[Reply to Assigning boundary conditions to an arbitrary object on Mon, 29 Oct 2018 10:32:38 GMT]]>I think that it would not be possible since you can only assign conductivity values for the voxels. Not the edges of the yee cell where the E-fields are computed. This basically means the absorbing boundary gets avaraged and won't work as you would want.

]]>https://forum.zmt.swiss/post/168https://forum.zmt.swiss/post/168Mon, 29 Oct 2018 10:32:38 GMT<![CDATA[Reply to Assigning boundary conditions to an arbitrary object on Sun, 28 Oct 2018 17:54:17 GMT]]>I don't think the built-in absorbing boundary conditions can deal with anything else than the 6 faces of the computational domain.

I suppose you would have to create your own sphere-shaped absorber, but I don't really know how that can be done. Perhaps by having a series of nested spheres with different radii and cleverly chosen conductivity? Surely there is something in the literature on this topic.

]]>https://forum.zmt.swiss/post/167https://forum.zmt.swiss/post/167Sun, 28 Oct 2018 17:54:17 GMT