Velocity Head

Dynamic pressure and velocity head expressed

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Velocity head can be expressed as

h = v2/2g (1)

where

v = velocity (ft, m)

g = acceleration of gravity (32.174 ft/s2, 9.81 m/s2)

Heads at different velocities can be taken from the table below:

Velocity
- v -
(ft/sec)
Velocity Head
- v2/2g -
(ft Water)
0.5 0.004
1.0 0.016
1.5 0035
2.0 0.062
2.5 0.097
3.0 0.140
3.5 0.190
4.0 0.248
4.5 0.314
5.0 0.389
5.5 0.470
6.0 0.560
6.5 0.657
7.0 0.762
7.5 0.875
8.0 0.995
8.5 1.123
9.0 1.259
9.5 1.403
10.0 1.555
11.0 1.881
12.0 2.239
13.0 2.627
14.0 3.047
15.0 3.498
16.0 3.980
17.0 4.493
18.0 5.037
19.0 5.613
20.0 6.219
21.0 6.856
22.0 7.525

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Related Topics

  • Fluid Mechanics The study of fluids - liquids and gases. Involves various properties of the fluid, such as velocity, pressure, density and temperature, as functions of space and time.

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