Approximate solution to Water Hammer Problem

Steel Penstock Example

Pipe Thickness = 0.375 inch
Modulus of elasticity of steel = 4.32e9 psf
Diameter = 4.00 ft
Length = 10000 ft
Velocity = 6.0 ft/s
Flowrate = 0.0 cfs

Sudden Valve Closure


Velocity of pressure wave = 0 ft/s
Pressure head due to sudden closure = 0 ft
Wave Reflection time = 0 sec

Slow Valve Closure


Time for slow closure = 60.00 sec
Pressure head = 0.00 ft

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Approximate solution to water hammer problem. Input parameters are in Blue. Outputs are in dark brown.