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What are the hydraulic diameter and radio?

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The hydraulic diameter is a characteristic parameter of a tube section or generic cannel, and allows studying the flow behavior just as if it was circular.




–   A is the cross sectional area of the channel

–   P is the humid perimeter

It´s important to note that the hydraulic radius (Rh) is not half the hydraulic diameter. Both parameters relate them self by the following:

Example of hydraulic diameter calculation for TecnoTec lamella H80:

Sin título

The hydraulic diameter of a lamella TecnoTec H80 is calculated as follows:











(a is the apotema)

Replacing values in the hydraulic diameter formula, it is easy to calculate that:

06 May, 15



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