Hi,
I'd like to ask a question about mixing problems of differing dimension in Comsol. My interest in this question comes from electromagnetics, but I think it could be useful in many areas and I wanted to ask the community about this. Does anyone know if it is possible to solve a 1D or 2D problem on a subdomain of a 3D geometry in Comsol? In other words, could you solve a 2D problem on a surface or a 1D problem on an edge that is part of a 3D drawing? If that is possible, could you then couple that with the 3D physics?
I ask this because, though you can define material properties of surfaces and edges in 3D models, if they are not part of a domain with similar properties, they seem to be ignored by Comsol. 3D problems seem to be defined only in domains except under special circumstances such as the new surface coil domain in 4.3b. Outside of the special circumstances, there is no green check mark next to the material properties defined for surfaces or edges, which apparently indicates that they are not really being considered. For instance, if I wanted to solve a problem where one surface of a domain has different conductivity than the others, this information does not seem to be considered by the solver, which only considers the domain.
So, does anyone know of a way that one can mix dimensions to solve problems in Comsol? If it were possible, it could lead to some interesting things.
I appreciate any input.
Thanks,
A. J.
I'd like to ask a question about mixing problems of differing dimension in Comsol. My interest in this question comes from electromagnetics, but I think it could be useful in many areas and I wanted to ask the community about this. Does anyone know if it is possible to solve a 1D or 2D problem on a subdomain of a 3D geometry in Comsol? In other words, could you solve a 2D problem on a surface or a 1D problem on an edge that is part of a 3D drawing? If that is possible, could you then couple that with the 3D physics?
I ask this because, though you can define material properties of surfaces and edges in 3D models, if they are not part of a domain with similar properties, they seem to be ignored by Comsol. 3D problems seem to be defined only in domains except under special circumstances such as the new surface coil domain in 4.3b. Outside of the special circumstances, there is no green check mark next to the material properties defined for surfaces or edges, which apparently indicates that they are not really being considered. For instance, if I wanted to solve a problem where one surface of a domain has different conductivity than the others, this information does not seem to be considered by the solver, which only considers the domain.
So, does anyone know of a way that one can mix dimensions to solve problems in Comsol? If it were possible, it could lead to some interesting things.
I appreciate any input.
Thanks,
A. J.