h = height of fluid column - or depth in the fluid where pressure is measured (m, ft)
Hydrostatic pressure in a water column - or depth (density of water 1000 kg/m3):
|Height of Water Column||Pressure|
The density of water at 4oC is 1000 kg/m3. The pressure acting in water at 1 m can be calculated as
p = ρ g h
= (1000 kg/m3) (9.81 m/s2) (1 m)
= 9810 Pa
The density of water at 32oF is 1.940 slugs/ft3. The pressure acting in water at 3 ft can be calculated as
p = ρ g h
= (1.940 slugs/ft3) (32.17405 ft/s2) (3 ft)
= 187.3 lbf/ft2 (psf)
= 1.3 lbf/in2 (psi)
Ocean pressure varies with depth and position (latitude) on earth.
|Ocean Pressure (MPa)|
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