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현재 위치

Hydraulic Diameter

작성자 Uploader : engx 작성일 Upload Date: 2016-03-22변경일 Update Date: 2016-03-22조회수 View : 1019

The hydraulic diameter, DH, is a commonly used term when handling flow in non-circular tubes and channels. Using this term one can calculate many things in the same way as for a round tube. It is defined as

DH = 4A / P

A : the cross sectional area (m^2, ft^2, L^2)
P : the wetted perimeter of the cross-section (m, ft, L)

The Manning formula contains a quantity called the hydraulic radius. Despite what the name may suggest, the hydraulic diameter is not twice the hydraulic radius, but four times.
Hydraulic diameter is mainly used for calculations involving turbulent flow. Secondary flows can be observed in non-circular ducts as a result of turbulent shear stress in the turbulent flow.
Hydraulic diameter is also used in calculation of heat transfer in internal flow problems.

*** 참고문헌[References] ***

https://en.wikipedia.org/wiki/Hydraulic_diameter

DH = 4 * A / P


변수명 Variable	변수값 Value	변 수 설 명 Description of the variable

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현재 위치

Hydraulic Diameter

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