Max Water Hammer Pressure in Pipes

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Max Water Hammer Pressure in Pipes

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Formula

The calculation for maximum Water Hammer pressure is as given below;

Hmax=C*V/g

Where,

Hmax = Maximum Water Hammer Pressure in meters,

C = Velocity of Pressure Wave Travel in meters/sec,

V = Flow Velocity in meters/sec,

The Pressure Wave Velocity is as given below;

C = 1425/(1+kD/Et)

Where,

k = Bulk Modulus of Water in Kg/sq.m.,

D = Diameter of Pipe in meters/sec,

E = Modulus of Elasticity of Pipe Material in Kg/sq.m.,

t = Pipe Thickness in meters/sec