| (1) | D_H = \frac{4 \, A}{P} |
where
A | cross-sectional area |
P | perimeter of the flowline |
in many Pipe Flow Simulation non-circular pipes can be modelled as circular with
in non-circular tubes and channels. Using this term, one can calculate many things in the same way as for a round tube
See also
Physics / Fluid Dynamics / Pipe Flow Dynamics / Pipe Flow Simulation