Abstract
The standard diffusion equation that is used to model diffusive phenomena suffers from a serious defect, namely it violates causality. Levermore and Pomraning developed a flux-limited diffusion theory (FDT) for radiative transfer that overcomes this limitation. The present work develops extensions of FDT which can be used to model steady state particle diffusion and viscous transport. The key improvement is that the diffusing particles are allowed to have a range of speeds, whereas in FDT they are assumed to have a single speed (which is appropriate for radiation). Expressions are given for the diffusion constant and the viscosity coefficient in steady state flows with bulk motion
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
