Refine TWF by adding independent mus and mud and a special twf for TPV22; Update the corresponding user manual

[Huihuiweng]

Add a special kind of TWF for TPV benchmarks

Revise a bug in special TWF

minor changes

small bug

Update 06_fault_sources.tex in user manual

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 45 lines in your changes are missing coverage. Please review.

Project coverage is 25.64%. Comparing base (7a1c764) to head (8cc2623).

Files	Patch %	Lines
src/specfem3D/fault_solver_dynamic.f90	0.00%	45 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##            devel    #1693       +/-   ##
===========================================
- Coverage   51.53%   25.64%   -25.90%     
===========================================
  Files         267      233       -34     
  Lines       60735    50224    -10511     
===========================================
- Hits        31302    12880    -18422     
- Misses      29433    37344     +7911     

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[Huihuiweng]

What are the causes of the failure of CI /Test on Mac? This is weird because I can successfully compile it on my computer.

[danielpeter]

will figure out the issues later, seems to be related to MPI and the parallel code compilation...

[Huihuiweng]

will figure out the issues later, seems to be related to MPI and the parallel code compilation...

Thanks.

[danielpeter]

this file caused the test problems - it shouldn't be included as it is a pre-compiled module file that only works for specific compilers & systems. i will take it out in the next PR...