Adaptive Mesh Refinement

DC current/voltage computation performs adaptive mesh refinement. An adaptive analysis is a solution process in which the mesh is refined iteratively in regions where the error is high, which increases the solution’s precision. You set the criteria that control mesh refinement during an adaptive field solution. Many problems can be solved only by using adaptive refinement.

The general process followed during an adaptive analysis is:

1. SIwave generates an initial mesh.
2. Using the initial mesh, SIwave computes the current density that exist inside the structure when it is excited at the solution frequency.
3. Based on the current finite element solution, SIwave estimates the regions of the problem domain where the exact solution has strong error. Triangles in these regions are refined.
4. SIwave generates another solution using the refined mesh.
5. SIwave recomputes the error, and the iterative process (solve, error analysis, refine) repeats until the convergence criteria are satisfied or the requested number of adaptive passes is completed.