What are the hydraulic diameter and radius?
posted in Technical Articles
The hydraulic diameter is a characteristic parameter of a tube section or generic channel, and allows studying the flow behavior just as if it was circular.
Where:
- A is the cross sectional area of the channel
- P is the wetted perimeter
It’s important to note that the hydraulic radius (Rh) is not half the hydraulic diameter. Both parameters relate to each other by the following:
Example of hydraulic diameter calculation for TecnoTec lamella H80
The hydraulic diameter of a TecnoTec H80 lamella is calculated as follows:
Where:
and:
(a is the apothem)
Replacing values in the hydraulic diameter formula, it is easy to calculate that:
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May, 15