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low value of y plus at the walls standard k-e model

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Old   September 13, 2013, 06:53
Default low value of y plus at the walls standard k-e model
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Mfm
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I have been trying to solve staggered heat exchanger using fluent .I got resonable results but the value of y plus is very low. I dont know is it normal or no way the results are good as long as yplus doesnt fit into the range

Attached y plus plots
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File Type: jpg ypluscylinder1.JPG (38.3 KB, 8 views)
File Type: jpg ypluswall.JPG (38.3 KB, 6 views)
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Old   September 13, 2013, 07:09
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I attached two plots
1-y plus of one cylinder
2-y plus of one of the walls


thank you
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Old   September 13, 2013, 09:14
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François Grégoire
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You didn't give enough details, it's impossible for anybody to answer your question.
- where exactly are the 'cylinder' and 'wall' boundaries, you should provide a picture
- which wall treatment did you use?
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Old   September 13, 2013, 13:45
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ok I will give complete explanation of the problem .The problem is an example in incropera book (Heat transfer).the mesh file is attached here and also the case file is uploaded here at 4shared
http://www.4shared.com/zip/hBKd1pCd/...t_exchang.html

I hope you can help on that === >Thank you in advance
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Old   September 13, 2013, 13:46
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ok I will give complete explanation of the problem .The problem is an example in incropera book (Heat transfer).the mesh file is attached here and also the case file is uploaded here at 4shared
http://www.4shared.com/zip/hBKd1pCd/incropera_example_heat_exchang.html

I hope you can help on that === >Thank you in advance
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Old   September 13, 2013, 13:49
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François Grégoire
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I will not sign up on 4shared to get your file. Learn how to create public download links with dropbox.
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Old   September 13, 2013, 15:05
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I am familliar with dropbox .

Everything is here ( case, dat and mesh )

https://www.dropbox.com/sh/ocx5n08i5eof1mg/cQDsFtYSCf

Thank you in advance
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