Exposure of Krylov Method for Frequency-Sweep Harmonic Analysis

[kmkoshy]

Exposure of Krylov Method for Frequency-Sweep Harmonic Analysis
The Krylov Class has methods for the following :
1. krygensub : Creates the Krylov subspace
2. krysolve : Solves the reduced system of equations
3. kryexpand : Expands the Krylov subspace

[germa89]

I made some suggestions, style wise mainly. I leave the math verification to @FredAns

After the tests are run successfully we will get the coverage percentage, we are aiming for 100% coverage, so you might need to add more cases, and test the non-valid input values.

I would recommend you to have a look at the following links:

• https://mapdl.docs.pyansys.com/contribution_and_api/index.html
• https://numpydoc.readthedocs.io/en/latest/example.html

Please implement the style checker (pre-commit) by following the procedure specified in the first link.

Overall, there is a lot of work here and shows. I really like how well commented is your code. Good job and thank you for the addition!

[germa89]

Things that are missing:

• Adding proper docstrings info to compute_residuals and is_orthogonal. There is some text already, but it not correct.
• Check self.orthogonal is the right name for the parameter it is storing (check _calculate_orthogonality)

After that we can merge.