Changes between Version 167 and Version 168 of FluxLimitedDiffusion
 Timestamp:
 04/03/13 12:15:45 (12 years ago)
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FluxLimitedDiffusion
v167 v168 39 39 Now photons don't experience body forces, always travel at the speed of light, and in general the "collision term" consists of photon emission and absorptions... so we have 40 40 41 [[latex(\frac{\partial}{\partial t} f_\nu + c \mathbf{n} \cdot \nabla f_\nu = A_{ emiss}_\nu  \chi_\nu f_nu c )]]41 [[latex(\frac{\partial}{\partial t} f_\nu + c \mathbf{n} \cdot \nabla f_\nu = A_{\mbox{emiss},\nu}  \chi_\nu f_\nu c )]] 42 42 43 43 where [[latex(A_{emiss}_\nu)]] is the emission rate of photons of frequency [[latex(\nu)]] and the mean free path length is given by [[latex(\chi_\nu = \sigma_nu n)]] where [[latex(\sigma_nu)]] is the particle scattering cross section and [[latex(n)]] is the number density of particles.