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Evolve heat from a body
Posted Jul 8, 2009, 1:44 p.m. EDT 1 Reply
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I would like to specify that a certain amount of heat is evolved from a body over a specified period in my 2D convection model - what is the proper way to do this?
1 Reply Last Post Jul 9, 2009, 4:15 p.m. EDT
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Posted:
2 decades ago
Assume that:
- total heat loss: Q (J, >0)
- body volume: V(m^3)
- period of time: t1 < t < t2
type below in the subdomain>heat source,
-(Q/V)/(t2-t1)*(t>t1)*(t<t2)
OR
Assume that:
- total heat loss: Q (J, >0)
- boundary surface: A (m^2)
- period of time: t1 < t < t2
type below in the boundary condition>inward heat flux
-(Q/A)/(t2-t1)*(t>t1)*(t<t2)
add additional boundary condition by defining h and T_inf.
- total heat loss: Q (J, >0)
- body volume: V(m^3)
- period of time: t1 < t < t2
type below in the subdomain>heat source,
-(Q/V)/(t2-t1)*(t>t1)*(t<t2)
OR
Assume that:
- total heat loss: Q (J, >0)
- boundary surface: A (m^2)
- period of time: t1 < t < t2
type below in the boundary condition>inward heat flux
-(Q/A)/(t2-t1)*(t>t1)*(t<t2)
add additional boundary condition by defining h and T_inf.