assign both heat flux and temperature on wall

qwerty753 · July 13, 2010, 11:31

Is there any strategy to assign both temperature and heat flux on a wall in Fluent? Also by UDF. Please suggest me
Thank you

fabolous · July 13, 2010, 15:24

Your question is interesting.
why both? does it really make sense? i work on a simulation for a heatexchanger(between two fluids) and i take "coupled" and let the value of the heatflux=0.
The Temperature is in the function of heatflux inside(i think):
dot q = dot Q/ A
dot Q = lambda * A * delta T / l

i would like to know your exact problem

qwerty753 · July 14, 2010, 08:09

I'm solving a problem that involves heat transfer in porous medium.
I'm using two equation for energy. So i have two domains one for fluid phase and another for the solid one. At boundary i have to impose a heat flux for both phase. This is not a problem. But at these boundary fluid and solid temperature have to be the same. So i need to use this "strange" boundary condition.

July 13, 2010, 11:31	assign both heat flux and temperature on wall	#1
qwerty753 New Member qwerty753 Join Date: May 2009 Posts: 16 Rep Power: 16	Is there any strategy to assign both temperature and heat flux on a wall in Fluent? Also by UDF. Please suggest me Thank you

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July 13, 2010, 15:24		#2
fabolous New Member Denis Palienko Join Date: Jul 2010 Posts: 12 Rep Power: 15	Your question is interesting. why both? does it really make sense? i work on a simulation for a heatexchanger(between two fluids) and i take "coupled" and let the value of the heatflux=0. The Temperature is in the function of heatflux inside(i think): dot q = dot Q/ A dot Q = lambda * A * delta T / l i would like to know your exact problem

July 14, 2010, 08:09		#3
qwerty753 New Member qwerty753 Join Date: May 2009 Posts: 16 Rep Power: 16	I'm solving a problem that involves heat transfer in porous medium. I'm using two equation for energy. So i have two domains one for fluid phase and another for the solid one. At boundary i have to impose a heat flux for both phase. This is not a problem. But at these boundary fluid and solid temperature have to be the same. So i need to use this "strange" boundary condition.