Changes between Version 9 and Version 10 of u/erica/scratch4
- Timestamp:
- 02/16/16 17:50:56 (9 years ago)
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u/erica/scratch4
v9 v10 16 16 [[latex($ L = \frac{1}{2}\dot{m} v_{ff}^2 = \frac{G\dot{m}M_{*}}{R_{*}}$)]] 17 17 18 Since we do not track energy accretion onto the sink, we are left to assume gas that is accreted from the surrounding zones contribute to this accretion luminosity directly. Thus, the best we can do for tracking the energy release from infall is to calculate the RHS of this equation in the code and use it as an estimate of the true accretion luminosity. (By the way, this form of the accretion luminosity was shown to be a good approximation for our purposes [https://astrobear.pas.rochester.edu/trac/blog/erica01262016 here]).18 Since we do not track energy accretion onto the sink, we are left to assume gas that is accreted from the surrounding zones contribute to this accretion luminosity directly. Thus, the best we can do for tracking the energy released from infall is to calculate the RHS of this equation in the code and use it as an estimate of the true accretion luminosity. (By the way, this form of the accretion luminosity was shown to be a good approximation for our purposes [https://astrobear.pas.rochester.edu/trac/blog/erica01262016 here]). 19 19 20 The accretion energy ([[latex($L*dt$)]]) will be distributed smoothly in a kernel surrounding the sink every time step. It will then diffuse away from the sink via FLD radiative transfer. In this way, sinks will act as additional sources of radiation within the grid.20 The accretion energy ([[latex($L*dt$)]]) will then be distributed smoothly in a kernel surrounding the sink every time step. It will then diffuse away from the sink via FLD radiative transfer. In this way, sinks will act as additional sources of radiation within the grid. 21 21 = Tracking accretion luminosity in the code = 22 22