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

meshoxx · September 13, 2013, 06:53

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

meshoxx · September 13, 2013, 07:09

I attached two plots
1-y plus of one cylinder
2-y plus of one of the walls

thank you

macfly · September 13, 2013, 09:14

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?

meshoxx · September 13, 2013, 13:45

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

meshoxx · September 13, 2013, 13:46

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

macfly · September 13, 2013, 13:49

I will not sign up on 4shared to get your file. Learn how to create public download links with dropbox.

meshoxx · September 13, 2013, 15:05

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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September 13, 2013, 07:09		#2
meshoxx New Member Mfm Join Date: Jun 2013 Posts: 18 Rep Power: 12	I attached two plots 1-y plus of one cylinder 2-y plus of one of the walls thank you

September 13, 2013, 09:14		#3
macfly Senior Member François Grégoire Join Date: Jan 2010 Location: Canada Posts: 392 Rep Power: 17	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?

September 13, 2013, 13:45		#4
meshoxx New Member Mfm Join Date: Jun 2013 Posts: 18 Rep Power: 12	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

September 13, 2013, 13:46		#5
meshoxx New Member Mfm Join Date: Jun 2013 Posts: 18 Rep Power: 12	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

September 13, 2013, 13:49		#6
macfly Senior Member François Grégoire Join Date: Jan 2010 Location: Canada Posts: 392 Rep Power: 17	I will not sign up on 4shared to get your file. Learn how to create public download links with dropbox.

September 13, 2013, 15:05		#7
meshoxx New Member Mfm Join Date: Jun 2013 Posts: 18 Rep Power: 12	I am familliar with dropbox . Everything is here ( case, dat and mesh ) https://www.dropbox.com/sh/ocx5n08i5eof1mg/cQDsFtYSCf Thank you in advance