Hello
I'm getting following error message when solving a 3D parabolic PDE-Problem with solvepde:
"This DAE appears to be of index greater than 1."
I want to solve a thermal Problem, so…
1. I have imported a 8 Layer Geometry prepared in SolidWorks, with each layer stacked on top of each other.
2. I have defined c,f,d by functions, since I have different materials and Power is only generated in the first layer.
3. I have defined the boundaries as Neumann boundaries, only the bottom Face as Dirichlet, since I have a constant temperature there. I have checked the boundaries in my model.
4. Initial condition is defined. In fact, the initial temperature is the same as the Dirichlet boundary condition.
That is roughly my approach. Does anyone have an idea, why I get this error message?
Best Answer