Formula for the Equivalent Diameter of elliptical pipe
Formula for the Equivalent Diameter of elliptical pipe
(OP)
Does anyone know the formula for the Equivalent Diameter of elliptical pipe? Not the hydraulic radius. A source would be appreciated. Thanks.
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve





RE: Formula for the Equivalent Diameter of elliptical pipe
RE: Formula for the Equivalent Diameter of elliptical pipe
You can get the area of an ellipse here: A = pi*A*B (where A and B are the semi-major and semi-minor axes).
This would leave you with an equation:
R' = sqrt(A * B)
This source agrees with that definition of an equivalent radius. Of course, it's not an hydraulics site...
RE: Formula for the Equivalent Diameter of elliptical pipe
Remember to check the conveyance which is more important than area. especially when dealing with open channel flow.
RE: Formula for the Equivalent Diameter of elliptical pipe
I know, I just don't have one with me.
francesca:
Thank you, that's exactly what I needed.
gbam:
Point is correct an well taken. I have ellipses though.
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve