Calculating Pressure of Moving Water on Foundation
Calculating Pressure of Moving Water on Foundation
(OP)
Does anyone have a tip on how to calculate the force exerted on a stationary object by a moving mass of water (e.g. pylon foundation in a river)?
Thank you.
Thank you.





RE: Calculating Pressure of Moving Water on Foundation
RE: Calculating Pressure of Moving Water on Foundation
RE: Calculating Pressure of Moving Water on Foundation
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RE: Calculating Pressure of Moving Water on Foundation
RE: Calculating Pressure of Moving Water on Foundation
Stagnation pressure = (Depth + (water_velocity ^ 2 / (2 * g)) * 62.4 lbs/ft3
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RE: Calculating Pressure of Moving Water on Foundation
F = (rho)*(A)*(Cd)*(V^2/2g)
where
rho = water density
A = projected area of the obstruction normal to the current
Cd = Coefficent of drag (=2 for sheet pile cofferdams)
V = velocity of the current
g = acceleration due to gravity
in english units rho =~ 2g and using Cd = 2
F = 2AV^2
Good luck!
RE: Calculating Pressure of Moving Water on Foundation
Section 13.18.1.1 of the AASHTO gives equation (3-4) as Pavg = K*(Vavg^2), where the Pavg equals pressure in pounds per square foot.
Where did you get your equation F = (rho)*(A)*(Cd)*(V^2/2g)
Also, I have round concrete piers. What friction factor Cd do you recommend and is there a reference for them?
Thanks.
RE: Calculating Pressure of Moving Water on Foundation
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