FLASH4.5 API

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[Functions] source/physics/sourceTerms/Burn/Burn_nseAtDens

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NAME

    Burn_nseAtDens

SYNOPSIS

    Burn_nseAtDens( real(OUT)   :: qbar_nse,
                          real(OUT)   :: sumyi_nse,
                          real(OUT)   :: approxtemp,
                          real(OUT)   :: edot,
                          real(OUT)   :: Yedot,
                          real(IN)    :: Ye,
                          real(INOUT) :: dens,
                          real(INOUT) :: emq)

DESCRIPTION

 This function gives the NSE final state for a constant density burn
 via table lookup.  qbar is returned in MeV/nucleon.
 Only the compositional information (qbar, 1/Abar, edot, Yedot) should be
 used for hydrodynamics purposes.
 Accurate thermodynamic prperties of the NSE final state (rho, T) should be
 obtained by solving
        eint - qbar_nse = emq .
 This is important due to the limited accuracy of the table interpolation
 (i.e., the interpolated values cannot satisfy any constraints on their own.)

ARGUMENTS

    qbar_nse    --  Average binding energy per nucleon (averaged over nse)
    sumyi_nse   --  Sum over the abundances. (Y = X/A = X/(#of nucleons))
    approxtemp  --  ?? Ask Dean
    edot        --  Neutrino and anti-neutrino loss rates [ergs/g]
    Yedot       --  Change in electron fraction wrt time (neutronization rate)
    Ye          --  Electron fraction
    dens        --  Density in/out
    emq         --  E-Q = Internal energy minus binding energy (per volume?)

NOTES

   Takes place after burning is complete.  NSE expands after burning
   and the equilibrium state is a function of the density and the
   temperature.  Been burned, flame is done, but then the hot stuff
   expands.  This changes the composition and releases energy.