This discussion focuses on modeling the Radiative Transfer Equation (RTE) using COMSOL Multiphysics, specifically addressing the challenges of defining integral terms for scattering and ensuring three-variable dependence on position, time, and direction vector. The user employed the Coefficient Form PDE but encountered difficulties in defining the direction vector and integrating terms. A recommendation was made to avoid treating the differential part as a PDE and instead to incorporate integral terms directly for scattering approximations, with a reference to a COMSOL blog post for further guidance.
PREREQUISITESResearchers, engineers, and physicists working on radiative transfer modeling, particularly those using COMSOL Multiphysics for complex simulations involving scattering and multi-variable dependencies.
RTE is an integro-differential equation. I think that it's not a good strategy to try to handle its differential part as a PDE and then bring in the integral for the scattering approximation. Please read this: https://www.comsol.com/blogs/4-methods-to-account-for-radiation-in-participating-media/ . . .shar333 said:
That makes a lot of sense. Thankssysprog said:
After you've read it, please get back to us -- thanks . . .shar333 said: