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Feature/reintroduce flux limiter #772

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see #771. where @JRGarza has reimplemented a flux limiter for use with the dPrad_dm form of the T-gradient equation.

Resolves #769
Related to #625

JRGarza and others added 3 commits January 27, 2025 13:30
…ofile columns flux_limit_lambda and flux_limit_R (ported from r9793)
Porting the flux-limiter prescription from r9793 to the latest MESA version
@Debraheem Debraheem added the enhancement New feature or request label Jan 27, 2025
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Let's make sure there are no floating point errors associated with this. I don't know if we need to save any star information in the photos, but let's see what happens to :
ppisn
ccsn_IIp
hse_riemann
pisn

all use dPrad_dm form of the T-gradient eqn.

https://testhub.mesastar.org/feature%2Freintroduce_flux_limiter/commits/9f8a91c.

I'll add a fpe check as well.

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Flux-limited diffusion radiation hydrodynamics in later versions of MESA
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