# Hydraulic Diameter of a Square Tube

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Hydraulic diameter, abbreviated as $$d_h$$, of a square tube is when the flow is within the tube.

## Hydraulic Diameter of a Square Tube formula

 $$\large{ d_h = w }$$

### Where:

 Units English Metric $$\large{ d_h }$$ = hydraulic diameter $$\large{ft}$$ $$\large{m}$$ $$\large{ w }$$ = width of tube $$\large{ft}$$ $$\large{m}$$ $$\large{ w }$$ = width of tube $$\large{ft}$$ $$\large{m}$$

Tags: Hydraulic Equations