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

2017-03-28 Thread Tongzhao Gong
Thanks, DeWitt. 在 2017年3月29日星期三 UTC+8上午1:50:16,Stephen DeWitt写道: > > In that case, you should just be able to use zero-flux boundary conditions > along the mirror plane. The way I typically picture it is that if you have > the same thing happening on either side of a mirror plane, you can't have

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

2017-03-28 Thread Stephen DeWitt
In that case, you should just be able to use zero-flux boundary conditions along the mirror plane. The way I typically picture it is that if you have the same thing happening on either side of a mirror plane, you can't have in-flow or out-flow. On a side note, depending on how far along you ar

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

2017-03-28 Thread Tongzhao Gong
Hi Bangerth, Thanks for your answering. Here I have a 2D domain and the phase-field model is complicated, so I have simplify the equations just like as follow:

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

2017-03-27 Thread Wolfgang Bangerth
On 03/26/2017 11:52 PM, tzgong...@gmail.com wrote: 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 compu

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

2017-03-26 Thread tzgong15s
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