[deal.II] imposing symmetric boundary conditions on the axis of symmetry of a 2D domain

Dear all, Recently I'm working on the phase-field simulation of dendritic growth by deal.II and I want to make the simulation carried out on only half of the domain due to the symmetry of the problem with respect to the vertical axis to improve computational efficiency. So how to impose su

Re: [deal.II] Re: New: step-57

Hi Timo, Thanks for your help. I have presented the formulations for time-dependent NS equations in the way you have done in step-57. Is it reasonable or you have a better suggestion? Thanks very much for your advices and help.

Re: [deal.II] Re: New: step-57

>> Is it possible to extend your code to time dependent Navier-Stokes >> equations? Certainly, but one could also start from one of the Stokes examples. I don't know if starting from step-57 is the best approach for you, because one would typically use a stable linearized time stepping method inst

[deal.II] Re: New: step-57

Hi Daniel, Thanks for your prompt help. I'm trying to solve the instationary incompressible Navier-Stokes equations at not very high Reynolds number(~100). It seems that this kind of fluid should be described by Navier-Stokes flow instead of Stokes flow(Re<<1)[1]. The "Vector-Valued" m

[deal.II] Re: New: step-57

Hi Daniel, Thanks for your prompt help. I'm trying to solve the instationary incompressible Navier-Stokes equations at not very high Reynolds number(~100). It seems that this kind of fluid should be described by Navier-Stokes flow instead of Stokes flow(Re<<1)[1]. The "Vector-Valued" m

[deal.II] Re: Avoid holding matrices in vector for MeshWorker

Franco, You are right that there is no matrix assembler class that accepts an AnyData object. I have seen that MeshWorker with the MatrixSimple assembler has an > initialize member that needs a vector of matrices. However that isn't > really good for my case, as I'd like to assign ownership of

[deal.II] Re: New: step-57

Jack, Is it possible to extend your code to time dependent Navier-Stokes >> equations? >> >> I want to solve the unsteady Navier-Stokes equations using the >> *Vector-Valued* method, but I did not get any good idea from the >> tutorial examples (step-22, step-32, etc.) for Stokes flow. >> > The

[deal.II] Re: New: step-57

> > Dear Timo, > > It is a very good example for solving Navier-Stokes equations. > > Is it possible to extend your code to time dependent Navier-Stokes > equations? > > I want to solve the unsteady Navier-Stokes equations using the > *Vector-Valued* method, but I did not get any good idea fr