# Tag Info

Accepted

### Post Processing of Solution and Plot of Coupled Partial Differential Equation Over a Semi-Circular Domain

I can't get the same exact plot for the second part. This is what I get This is the code. Feel free to change it as needed. ...
Accepted

### Solution and Plot of Coupled Partial Differential Equation Over a Semi-Circular Domain.II

Since you used NDSolveValue to solve the first PDE, then you can use that solution in the second PDE using sol1[r,θ] and not as ...
Accepted

### NDSolveValue result contradicts initial condition

Let's have a look at the mesh that is automatically generated: Needs["NDSolveFEM"] mesh = ToElementMesh[rg] Now, we evaluate the ic at the coordinates ...

in V 13.3.1 ...
1 vote
Accepted

### FEM solution for onedimensional boundary value problem doesn't evaluate

That's a typo: You used "MaxCellMeasure->0.1" but you should use: "MaxCellMeasure" -> 0.1
1 vote

### Mathematica thinks that an initial condition is a boundary condition

Here is a way to solve it. Note that there is no need for the NeumannValue, as the 0 NeumannValue is the default. I have changed the initial condition on R and gave ...
Accepted

### Artifacts when interpolating on an unstructured set of 3D data

How about something like this: ...
1 vote
Accepted

### Second order Poisson ODE

This is some sort of a scaling problem: ...
1 vote
Accepted

### Need help solving cylindrical Laplacian

You'd need to use Cartesian coordinated (or use a RegionSymmetry). Something like this should get you started: ...