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#1 |
New Member
Anonymous
Join Date: Feb 2012
Location: Germany
Posts: 13
Rep Power: 14 ![]() |
Hello everybody.
First of all, saying that this forum is great. I have been using it for weeks to get started into CFX. Now im doing my first project with it and i am already having trouble. System is a simple cooling water pipe with several cupper pipes across it who deliver heat (lets say 1000w for the sake of the problem). I tried to follow the CFX-5 tutorial "Conjugate Heat Transfer in a Heating Coil" but it doesnt work. The hot pipes get inifinitely warm (10 million Celsius degrees!!) and cooling water doesnt change temperature. I applied the 1000w heat to the subdomain, like in the tutorial, but when I tried applying this heat to the fluid walls in contact with the hot pipes it worked! But the thing is that I want to know which ΔT there is between cooling and hot pipes, so I need to know where my mistake is. Can anyone give me a hint to solve this problem? Connectivity problems? Bad modelling? Thank you very very very much!!! Regards |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,816
Rep Power: 144 ![]() ![]() ![]() ![]() |
Sounds like you did not apply the interface between the solid and fluid domains.
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#3 |
New Member
Anonymous
Join Date: Feb 2012
Location: Germany
Posts: 13
Rep Power: 14 ![]() |
Thanks a lot, you are right. The thing is that i still dont know why in the tutorial that Interface is not being defined... Anyway, it works perfectly!
Thanks Glenn |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,816
Rep Power: 144 ![]() ![]() ![]() ![]() |
Because the interface is automatically detected from the two coincident faces. For some reason your faces were not detected as coincident, or you turned this checking off.
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Tags |
heat transfer cooling |
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