Changes between Version 5 and Version 6 of u/erica/RadHydro
- Timestamp:
- 03/29/16 18:44:17 (9 years ago)
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u/erica/RadHydro
v5 v6 29 29 In the code the constant out in front is given by "scalerad". Checking a uniform ambient medium with this expression for Erad, shows that Erad at t=0 is given by scalerad*T^4^. Thus, any gas with finite temperature is producing radiative energy in the grid through black body radiation. Since 30 30 31 [[latex($\frac{\partial E}{\partial t} \propto \nabla \cdot \nabla E + (4 \pi B - cE)$)]] 31 [[latex($\frac{\partial E}{\partial t} \propto \nabla \cdot \nabla E + (4 \pi B - cE)$)]], 32 32 33 [[latex($cE=4\pi B ~(at ~t=0)$)]], and 34 35 [[latex($\nabla E =0$)]], we have 36 37 [[latex($\frac{\partial E}{\partial t}=0$)]] 38 39 There is no change in the radiative energy over time. Now, other dynamics in the simulation, e.g. gravity, could change the temperature distribution in the grid and thus B(T). Only after this would happen, would we begin to see changes in E. 40 41