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how to analysis double pipe heat exchanger in cfx |
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May 12, 2011, 15:25 |
how to analysis double pipe heat exchanger in cfx
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#1 |
New Member
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hii friends,
i'm ram krishna.i have taken final year project to simulate a double pipe heat exchanger but i don't know how to do it.can some one tell me step by step procedure to simulate a double pipe heat exchanger in ansys cfx. i want to know everything from mess generation to defining inlet, outlet, how to set fluid properties and how to give domain interface. i have to finish my project by 30 may so some one please help me. i will be very grateful to you. thank you very much |
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May 13, 2011, 03:34 |
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#2 |
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
Rep Power: 22 |
No one is going to write a step-by-step tutorial for you, especially if you have no prior knowledge about CFX. I suggest that you do a lot of tutorials to familiarize yourself with the program. Have a look at tutorial 16 which deals with heat transfer from a heating coil.
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May 13, 2011, 06:31 |
is their any book available which has step by step procedure to work on heat exchange
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#3 | |
New Member
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Quote:
thank you for your concern. is their any book available from where i can learn the procedure of analyzing heat exchangers in cfx or fluent. |
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May 13, 2011, 06:51 |
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#4 |
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
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I haven't seen a dedicated CFX book on heat exchangers, that's why I said that you should look into tutorial 16. The manual will also be useful.
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May 16, 2011, 07:12 |
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#5 |
New Member
Vijaya Sekhar Gullapalli
Join Date: May 2011
Location: Sweden
Posts: 6
Rep Power: 15 |
You might need to perform conjugate heat transfer for double pipe heat exchanger. Moreover, proper near wall resolution is necessary. Meshing for the solid domain can be tricky due to large aspect ratio and you might need to have a number of cell layers (something like 4-5) in pipe domain. k-w SST model is recommended when you have separated flows etc.
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May 16, 2011, 19:55 |
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#6 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,850
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If the solid wall is thin you can use the new capability (V13 I think) to put a thin interface between two fluid regions. This way you do not mesh the thin solid layer, but replace it with a representative thermal resistance. This may simplify things for you.
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May 17, 2011, 04:39 |
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#7 |
New Member
Vijaya Sekhar Gullapalli
Join Date: May 2011
Location: Sweden
Posts: 6
Rep Power: 15 |
Agree with ghorrocks. Thin interface is possible. But sometimes, pipe features enhance or deter local heat transfer and temperature difference. In those cases CHT is interesting for determining local distribution of wall temperatures and heat flux for pipe domain and wall heat transfer coefficients etc for fluid domains
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May 17, 2011, 20:07 |
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#8 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
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Obviously if reducing the solid down to a simple thermal resistance is not appropriate then the thin surface approach is not appropriate. Also keep in mind I do not think the thin surface takes into account the thermal mass of the solid (I think). So if you are interested in transient behaviour you will also have to determine if the solid time scale is fast enough to be ignored.
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May 24, 2011, 11:44 |
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#9 | |
New Member
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Quote:
thanking you regards, ram krishna |
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May 24, 2011, 20:13 |
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#10 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,850
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I do not have time to write step by step procedures.
If you tell us what does not seem to be working we will try to help. |
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March 29, 2013, 22:15 |
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#11 |
New Member
David Lopez
Join Date: Dec 2012
Location: Venezuela
Posts: 9
Rep Power: 13 |
this is a quick way to simulate the heat transfer through the solid, and if the version 13.0.
The only problem with doing this is that you will do the transfer only in one dimension. But it's good to start your simulation aporximacion. regards |
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February 14, 2014, 15:49 |
interface error
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#12 |
New Member
hardik thakkar
Join Date: Feb 2014
Posts: 2
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in post processing, i m getting error related to interface...
so what parameters should i modify in order to get simulation result. |
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February 14, 2014, 17:10 |
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#13 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,850
Rep Power: 144 |
Please start a new thread for a new question. And when you do please include enough information to make it a worthwhile question - see http://www.cfd-online.com/Wiki/Ansys...ible_answer.3F
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