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June 4, 2018, 01:29
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Wall roughness for external flow in pipea
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#1 |
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New Member
Nived Sankar
Join Date: Mar 2018
Posts: 27
Rep Power: 8  |
I need to model a bundle of pipes arranged above each other. The diameter of the pipes is 20mm. The distance between the pipes is 40mm. I need to model wall roughness on the outer side of pipes. How to calculate the values of roughness height and roughness constant?
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June 6, 2018, 02:26
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#2 |
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New Member
Nived Sankar
Join Date: Mar 2018
Posts: 27
Rep Power: 8 |
Somebody pls help me find the range of values for roughness height.
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June 6, 2018, 03:04
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#3 |
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Member
Baris PULAT
Join Date: Sep 2016
Location: Italy
Posts: 59
Rep Power: 9 |
Here are some values for the roughness of pipes with different materials.
http://www.spray.com/calculators/Pre...Calc/rauh.html For the roughness constant fluent manual gives you the information. https://www.sharcnet.ca/Software/Flu...ug/node253.htm If you can do a quick search on this forum and also google, you can find pretty much everything you need. Baris |
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