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Hydraulic Radius - Rectangular Pipe Duct

ÀÛ¼ºÀÚ Uploader : engx ÀÛ¼ºÀÏ Upload Date: 2016-03-22º¯°æÀÏ Update Date: 2016-03-22Á¶È¸¼ö View : 654

Hydraulic radius is

Rh = A / P  

Rh : the hydraulic radius (m, ft, L)  
A : the cross sectional area of flow (m^2, ft^2, L^2)  
P : the wetted perimeter (m, ft, L)  

For Rectangular pipe duct

A = B*h , P = 2(B*h), Rh = (B*h) / 2(B+h)
B : Width of pipe duct (m)
h : Height of pipe duct (m)

*** Âü°í¹®Çå[References] ***

https://en.wikipedia.org/wiki/Manning_formula#Hydraulic_radius
Rh = (B*h) / (2*(B+h))
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