Thank you! I will try that.
On Thu, May 27, 2021 at 9:17 AM Wolfgang Bangerth <bange...@colostate.edu> wrote: > On 5/26/21 10:53 PM, David Montiel Taboada wrote: > > > > I would like to solve a PDE using cylindrical coordinates (instead of > > cartesian) but my equations are rotationally symmetric (do not depend on > > theta). Therefore, I only need to solve the problem in a 2D domain with > > coordinates r (radius) and z (direction along the axis). > > > > Can I just do that by employing a cylindrical mesh with dim=2, for > example > > using the function GridGenerator::cylinder, or do I need to pick a > > specific finite element function and/or modify the weak form of the > equations? > > If you want to solve a rotationally symmetric PDE in a cylinder, then the > r-z > domain will just be a rectangle r=0...R, z=0...L. There are functions in > GridGenerator for that. > > To describe the weak form of the PDE in that case, you need to use a > modified > form of the PDE that accounts for the change of coordinates from x,y,z to > r,z. > You might want to search the mailing list archives, where there are > several > threads on that topic. > > Best > W. > > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bange...@colostate.edu > 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 dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/84d0543b-2b85-db43-f94a-2b395d8b4e17%40colostate.edu > . > -- 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 dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAJdNbL-UDaCAaXkA6n%2B1AGWmgogFeoMNhkBHpDstbqvfnb2WyQ%40mail.gmail.com.
