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P_N Closure

steffen.schotthoefer requested to merge entropy_closure into master

(Reopening mergerequest !10 (merged), that was somehow closed)

This merge request contains all work done with respect to the implementation of

  • P_N Solver

  • P_N Unit Tests

  • Adapted Fluxes

  • Code Restructuring: Indroduced new folders, tidied up #include statements

  • Spherical harmonics basis + unit tests

  • untested version of MN Solver

  • Changed CFL number computation. How to use P_N Solver:

  • Select as option SOLVER=PN_SOLVER

  • Option MAX_ORDER_SOLVER is the order N of the PN equations

  • One can tune the flux matrices with the Option CLEAN_FLUX_MATRICES = YES. This will set very low floating point values to zero in the (sparse) FLux matrices. This should improve floating point arithmetic stability.

Corresponding issues: #42 (closed), #30 (closed), #41 (closed), #39 (closed) , #38 (closed)

Edited by steffen.schotthoefer

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