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Neumann boundary
6 years 4 weeks ago #1257
by ddrake
Neumann boundary was created by ddrake
Hi,
I understand that if we apply a Neumann boundary condition to the Poisson problem, there is no unique solution. I was wondering if there is a standard way to solve this problem in NGSolve by specifying a specific value for say a boundary point.
Best,
Dow
I understand that if we apply a Neumann boundary condition to the Poisson problem, there is no unique solution. I was wondering if there is a standard way to solve this problem in NGSolve by specifying a specific value for say a boundary point.
Best,
Dow
- christopher
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6 years 4 weeks ago - 6 years 4 weeks ago #1258
by christopher
Replied by christopher on topic Neumann boundary
You can set one vertex dof to dirichlet with
Then the problem should be solvable and the solution is 0 in that vertex.
Best
Christopher
Code:
fes.FreeDofs()[dofnr] = False
Best
Christopher
Last edit: 6 years 4 weeks ago by christopher.
The following user(s) said Thank You: ddrake, liubenyuan
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