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August 24, 2014, 18:08 |
Heat Exchanger
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#1 |
New Member
Mustafa Al Hakeem
Join Date: Aug 2014
Location: Hungary
Posts: 5
Rep Power: 11 |
Hello evry Body!
I have a problem with results in ANSYS cfx THe results are reflex for as Solid domain. why did they be those? from the Picture we notice that lates fins are hotter than the earliest fins for inlet where the water is hotter ! Is this wrong? How I fix it? |
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August 24, 2014, 18:38 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,728
Rep Power: 143 |
Are you sure your simulation is accurate? Have you done the normal checks - mesh, time step and convergence sensitivity?
Also, what is happening at the outside of the fins? Are they loosing heat to air? Soem other fluid? And how is it constrained? |
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August 25, 2014, 10:45 |
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#3 |
New Member
Mustafa Al Hakeem
Join Date: Aug 2014
Location: Hungary
Posts: 5
Rep Power: 11 |
Yes I checked for every things
I did a lot of simulations for alot of models of heat exchanger and the same problem was there in every model the boundary conditions for this model are: for water : inlet (80[c],0.1[m\s],1[atm]) ,outlet(1[atm]) for solid(ALuminum) : convection with heat coffeicet equal 10 for this model I don't take air domain |
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August 25, 2014, 11:04 |
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#4 |
New Member
Mustafa Al Hakeem
Join Date: Aug 2014
Location: Hungary
Posts: 5
Rep Power: 11 |
this is another model with three domains : water , Air (enclouser) and solid
the same problem is found the boundary conditions : the same for water (80 c , 0.1 m\s ,.........) and for air (20 [c], inlet (1 m\s) |
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August 25, 2014, 11:12 |
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#5 |
New Member
Mustafa Al Hakeem
Join Date: Aug 2014
Location: Hungary
Posts: 5
Rep Power: 11 |
this another model with 3 domains : air ,water, solid (aluminum)
the wrong is with solid domain only. |
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August 29, 2014, 16:07 |
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#6 |
New Member
Mustafa Al Hakeem
Join Date: Aug 2014
Location: Hungary
Posts: 5
Rep Power: 11 |
Please I need help.
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August 29, 2014, 19:58 |
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#7 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,728
Rep Power: 143 |
Please post your output file, and an image showing your full domain and the boundary conditions you applied.
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Tags |
cfx heat exchanger |
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