| Version 3 (modified by , 12 years ago) ( diff ) |
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PURE FUNCTION get_mu (nvec)
Defined in
Inputs
- nvec - number densities of tracked species
Description
- Calculates mean molecular weight of the gas, based on the number density of each species and the total number density
Specifics
- CALLs nparticle to get total number density of particles
- Assumes electrons have zero mass, so ionizing increases number of particles, but mass stays the same
- This reduces the mean mu, and since energy is conserved, also reduces the gas temperature.
- Note: comment says mu ~ 0.5 for HI gas, but I think this should be for HII gas (nHII)*muH/(nHII + ne)…?
- mu = (nH2*muH2 + (nH+nHII)*muH + (nHe+nHeII+nHeIII)*muHe)/n_total
Invoked in
- SUBROUTINE EOS_vars
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