Asked by: Yali Behnecke
science physics

What is mean by hydraulic radius?

Last Updated: 26th June, 2020

Hydraulic radius is defined as the area of theflow section divided by the wetted perimeter, whereas, Hydraulicmean depth is defined as the area of the flow section dividedby the top water surface width.

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Regarding this, what is a hydraulic radius?

Definition of hydraulic radius. : the ratio ofthe cross-sectional area of a channel or pipe in which a fluid isflowing to the wetted perimeter of the conduit.

Secondly, what is the hydraulic radius of a pipe? Hydraulic radius is the area of the water prismin a pipe or channel divided by the wetted perimeter. Thus,for a round conduit flowing full or half full, the hydraulicradius is d/4. Hydraulic radius measures the flowefficiency of a pipe.

Subsequently, one may also ask, how do you find the hydraulic radius?

From the hydraulic radius definition:RH = A/P, where A is the cross sectional area of flowand P is its wetted perimeter. From the diagram it is clear that A= by and P = 2y + b, so the hydraulic radius is:RH = by/(2y + b) for an open channel flow through arectangular cross section.

What is hydraulic diameter used for?

The hydraulic diameter (aka hydraulic meandiameter) is used for a fluid flowing in a pipe, ductor other conduit of any shape. This uses the perimeter andthe area of the conduit to provide the diameter of a pipewhich has proportions such that conservation of momentum ismaintained.

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