-< 5 the surface roughness. Hydraulically smooth condition the flow. Why is the limit set to et < 5?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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C. For turbulent pipe flow, the pipe can be treated as hydraulically smooth if
Eu*
et
where e is the surface roughness. Hydraulically smooth conditions means that surface roughness will
not effect the flow. Why is the limit set to ɛt < 5?
Transcribed Image Text:C. For turbulent pipe flow, the pipe can be treated as hydraulically smooth if Eu* et where e is the surface roughness. Hydraulically smooth conditions means that surface roughness will not effect the flow. Why is the limit set to ɛt < 5?
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