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### Future enhancements for the finite element method

How should the finite element method (FEM) framework in the language be extended to be more useful? With the release of version 12.0 all fundamental FEM solvers (linear, nonlinear, stationary, ...
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591 views

### Reveal the formal PDE of FiniteElement

When FiniteElement method is used, the differential equations will first be transformed to certain standard form (named as formal PDE in recent FEM document), and ...
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### Dirichlet Condition at Infinity

I have the following system of diffusion equations with these boundary conditions. The second condition is a Dirichlet condition at x approaching infinity. How do I implement that? I've tried ...
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### Using Neumann boundary conditions for the wave equation

I have the following code to solve the wave equation in 2D: ...
814 views

### What causes the warning "The dependent variable in the boundary condition needs to be linear" when using NDSolve?

V 12.1.1 on windows 10 Why the following works ...
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306 views

### 1D-waveequation with absorbing boundary condition: FEM solution?

I try to simulate the special absorbing(?) boundary condition Derivative[1, 0][y][1, t] + Derivative[0, 1 ][y][1, t] == 0 which only allows energy flow in ...
285 views

### Gradient of the numerical solution of a PDE

Solving the following PDE, defined in the same domain of a previous question: ...
• 585
284 views

### Semi-classical approximation of modified Schrodinger's equation on a sphere leads to ndsz warning

I know this error is very common. I checked out a good number of proposed solutions to this problem, but unfortunately, none of them helped in my case. I would appreciate any help or hints on how to ...
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1 vote