Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Fluid Pressure 1

Status
Not open for further replies.

PEStructural

Structural
Joined
Oct 17, 2002
Messages
128
Location
US
Can someone help me remember how to calculate a pressure from a velocity of water? I have a pump in a river that flows at 10 feet/sec. I need to calculate the pressure the water exerts on the pump to design the anchorage.

Any help would really be appreciated.

Thanks!
 
F=1/2 rho v^2 A C
Pressure = 1/2 rho V^2 C

F= force from current
rho= density of water (not pcf, divide by gravity first)
v= velocity of water
A= X-section area of the pump
C= Drag coefficient.

C for a car is about .45. Maybe use high number like .7 or something.

 
Thanks a lot for the quick response!
 
i got 96 with C=1. I assumed the pump is like a flat plate. Dont take anything for granted K. I have been out of school kind of long and I dont encounter this equation when I design a house :-)

 
I checked with an hydraulics engineer in house and I got the same equation. I came up with 96.89 psf. Good job!
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top