光子的输运方程、扩散近似与Rosseland平均自由程

The Transport Equation for photons Diffusion Approximation and Rosseiand Mean Free Path

本文采用具体条件下的散射模型,对光子输运方程中的散射项作了近似处理。进一步在对系统作了部分与完全热动平衡的模型下,又将光子输运方程化简为扩散方程求解。同时在讨论辐射总能量流热传导方程时,引入了Rosseland平均自由程1。

Thsi articaele mekes an approximate treatment of the diffusion term in the transport equation for photons by means of diffusion model under concrete condtiions. The transport equation for photons is simplified into diffusion one with the model of which the system is partially or totally thermo-ballenced. Then it leads into Rosseland mean free path while analysing the diffusion equation.