Pipeline Toolbox
Function Reference Manual
Early Public Release DD-00011-000

3.5.2 hazen_williams_q - Hazen-Williams flow rate Q
q = hazen_williams_q(p,d,c,sg=1)

Calculate the Hazen-Williams volumetric flow rate given the pressure drop due to friction. Common values for the roughness factor of the pipe C by material are provided in the in table 3.5.1.

Arguments

p

Pressure drop due to friction P (kPa/km  ).

d

Pipe internal diameter D (m  ).

c

Roughness factor of the pipe C , see table 3.5.1.

sg

Liquid specific gravity Sg   .

Returns Volumetric flow rate (m3/h  ).

Possible Errors

Hazen-Williams factor must be >0

A negative or zero Hazen-Williams factor was supplied.