Cd values in water
Cd values in water
(OP)
I am designing a cofferdam in a river and was wondering if the Cd (Drag Coef) in water changes from values given for wind?
Thanks
VOD
Thanks
VOD
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RE: Cd values in water
RE: Cd values in water
RE: Cd values in water
The Drag Coefficient(Cd) is based on the Reynolds Number(Re)
The calculation of the Drad coefficient is based on Stokes law. The formual is:
Cd = 24/Re
The same formula is used for gas or liquid.
Calculate the Reynolds Number for the fluid and shape of the immersed body and plug it into Stokes law formula and you will get the Drag Coffieicnt.
Mark's Standard Handbook for Mechanical Engineers published by Mcgraw-Hill gives the procedure and a table of Drag
Coefficients for various shapes and Reynolds Numbers.
RE: Cd values in water
Cd = 24/Re
true only for ideal spherical bodies?
RE: Cd values in water
IT IS FOR SPHERES AND CIRCULAR DISKS
RE: Cd values in water
phex.