Andreas,
> I have been using Deal.II for quite a time, as the basis of the multi-scale > multi-physics code FEMOCS > <https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fveskem%2Ffemocs&data=02%7C01%7CWolfgang.Bangerth%40colostate.edu%7Cd7d8d7ed6a644b803f8908d7639a4fb1%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C1%7C637087386726073424&sdata=oXStQieIrHcNMPw4sO%2FfnCF%2B8mxdRgGXSrprxUrMo0w%3D&reserved=0> > > we have been developing in our groups. Until now our code has been strictly > 3D, but now we need to solve some problems with rotational symmetry and we > want to adapt the code for 2D axisymmetric problems in order to save > computational power. > > I have been trying to figure out how to set up such a system, but to be > honest > I am completely lost. I understand that I have to use a different mapping > than > the default one when definig the FEValues object (probably a mapping that is > associated with a CylindricalManifold, but I cannot figure out how to do it, > especially how to associate a certain manifold to a mapping. No, if you use cylindrical coordinates, then you work in r-z space and your domain is probably just a rectangle. But your PDE changes. As for resources: Yours is a rather frequently asked question. Rather than trying to repeat what I've been writing on many other occasions, have you tried to search through the mailing list archives to find some starting point? > In general, I think the webpage is really missing a tutorial or an example > where a simple 2D axisymmetric problem is solved (e.g. just the > laplace/poisson equation in such a domain). Such problems are very common and > a lot of people would benefit from such a tutorial. Yes, we should eventually write such a tutorial... Best W. -- ------------------------------------------------------------------------ Wolfgang Bangerth email: [email protected] www: http://www.math.colostate.edu/~bangerth/ -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" 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/dealii/a50350f7-db68-7813-6070-278c703e8b6c%40colostate.edu.
