Hydraulic diameter
From CFD-Wiki
(Difference between revisions)
Revision as of 13:51, 24 March 2006
The hydraulic diameter, , is commonly used when dealing with non-circular pipes, holes or ducts.
The definition of the hydraulic diamater is:
Circular pipe
For a circular pipe or hole the hydraulic diamater is:
Where d is the real diameter of the pipe. Hence, for circular pipes the hydraulic diameter is the same as the real diameter of the pipe.
Rectangular tube
For a rectangular tube or hole with the width and the height
the hydraulic diamter is:
Coaxial circular tube
For a coaxial circular tube with an inner diameter of and an outer diameter of
the hydraulic diameter is: