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Transient Natural Convection

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Old   June 29, 2012, 09:10
Default Transient Natural Convection
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Hi everybody,
I have always worked on steady-state simulations with natural convection: now I'd like to do transient ones.
Can anybody give me some advice? Above all about the time step in the first iterations(the optimal one can be calculated from flow properties) and Max iterations/time step...
(The system is a radiator in a closed room, in reality it reaches its regime in about 2 hours)

Thanks in advance
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