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Hydraulic Diameter of Rectangular Tubes or Ducts

Last modified by

on

Jul 24, 2020, 6:28:07 PM

Created by

on

Jun 28, 2014, 10:55:56 AM

$dh = (2* "a" * "b" )/( "a" + "b" )$

$(a) "width of the duct"$

$(b)"height of the duct"$

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c831eda8-feb2-11e3-b7aa-bc764e2038f2

The Hydraulic Diameter of Rectangular Tubes or Ducts calculator computes the hydraulic diameter based on the height and width of the duct.
/attachments/c831eda8-feb2-11e3-b7aa-bc764e2038f2/HydraulicDiameterofRectangularTubesorDucts-illustration.png

INSTRUCTIONS: Choose units and enter the following:

(a) Width of the duct
(b) Height of the duct

Hydraulic Diameter (hd): The calculator returns the diameter in meters. However this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the Hydraulic Diameter of Rectangular Tubes or Ducts is:

dh= 2•a•b / (a + b)

where:

dh = hydraulic diameter of the rectangular duct
a = width of the duct
b = height of the duct

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HydraulicDiameterofRectangularTubesorDucts-illustration.png

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