Single droplet evaporation validation

[d-montgomery]

This PR migrates and updates the original PeleMP validation tests for single droplet evaporation. It includes:

• Additional validation cases from Nomura et al., Wong & Lin, and Runge et al.
• Updated input parameters, validation data, and figure generation
• Documentation included in PelePhysics PR #581

I will be working on adding new features in PelePhysics for calculating liquid fuel properties, which should help the results from the Nomura et al. case.

[baperry2]

How about calling this case SingleDropEvap to be more clear?

To ensure this doesn't break, it should run in the CI. Probably the best way to do this is to add the base case to the CMake tests in ci.yml. That would leave the python part untested but ensure the Pele part keeps working. To run the python stuff you'd have to choose one of the faster cases and run that in linux.yml.

I get a deltaT iters not converged error for the WongLin case. Didn't run everything to completion but others seem to be working.

[d-montgomery]

• Fix headers in .csv's
• Clean up transport function call in prob.cpp
• Rename mechanism in GNUmakefile
• Point to updated PelePhysics with liquid_fuels_nonreacting mechanism
• Check if exe includes MPI in Validate.py
• Add to CI

[d-montgomery]

@baperry2, the CI test for SingleDropEvap is failing due to an unused variable, mu_parts in SpraySB.cpp (see line 53). This wasn't triggered previously as the other spray tests have SPRAY_FUEL_NUM = 1.

It does not appear that mu_parts is useful in SpraySB.cpp. Should I delete it entirely or use an amrex::ignore_unused for now?

[baperry2]

Yeah it's better to just get rid of the unused variables if they are truly unused. amrex::ignore_unused() is more for function arguments and that type of thing where you cant just comment/delete the offending unused variables.

[d-montgomery]

Everything seems to be working now. The last step is to merge PelePhysics #581 and update the corresponding submodule in this LMeX PR.