[deal.II] Re: Non Homogenous Boundary Conditions on a Cylinder

2020-06-30 Thread Simon Sticko
Hi, >From the figure you can't really tell whether the boundary condition is fulfilled or not. If you want to check if the normal derivative is reasonable (almost equal to 0) at the boundary, the easiest is probably to plot the solution on a line in the radial direction. This can be done by

[deal.II] Is there an advantage/disadvantage/difference to using FEInterfaceValues (tutorial step 12) instead of the MeshWorker framework (tutorial step 12b) when it comes to DG?

2020-06-30 Thread CopyCat
Hello, I am in the process of learning DG and dealii. I would like to implement a DG solver that would solve the convection-diffusion equation and later implement another code to solve the incompressible NS equation using DG as well. Tutorials 12 and 12b use different approaches to solve the

Re: [deal.II] GMesh 1D mesh input error

2020-06-30 Thread Wolfgang Bangerth
On 6/26/20 11:05 AM, Victoria W. wrote: This fixed my problem in 2d, but I'm still having issues in 3d.  Any other suggestions for getting a .msh file read in when it's a 2d mesh in 3d space? Posting the mesh I want to use here, with the type 15 elements removed.  I've also tried other

Re: [deal.II] Is there an advantage/disadvantage/difference to using FEInterfaceValues (tutorial step 12) instead of the MeshWorker framework (tutorial step 12b) when it comes to DG?

2020-06-30 Thread Wolfgang Bangerth
I would like to implement a DG solver that would solve the convection-diffusion equation and later implement another code to solve the incompressible NS equation using DG as well. Tutorials 12 and 12b use different approaches to solve the pure convection equation, and so I was wondering