Water Hammer Equations Formulas Design Calculator

Fluid Mechanics Hydraulics Pipe Flow


Solving for pressure increase.
pressure increase

Inputs:

flow velocity (V)
upstream pipe length (L)
valve closing time (t)
inlet pressure (Pi)


Conversions:

flow velocity (V)
= 0
= 0
foot/second
upstream pipe length (L)
= 0
= 0
foot
valve closing time (t)
= 0
= 0
second
inlet pressure (Pi)
= 0
= 0
pound/inch^2

Solution:

pressure increase (P)
= NOT CALCULATED

Other Units:


Change Equation
Select to solve for a different unknown
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in length of fluid
pressure wave velocitypressure wave velocity
fluid velocity changefluid velocity change
acceleration of gravity
maximum surge pressure for a fluid
maximum surge pressure for a fluidmaximum surge pressure for a fluid
pressure wave velocitypressure wave velocity
fluid velocity changefluid velocity change
unit weight of fluidunit weight of fluid
acceleration of gravityacceleration of gravity
maximum surge pressure for water
maximum surge pressure for watermaximum surge pressure for water
pressure wave velocitypressure wave velocity
water velocity changewater velocity change
acceleration of gravityacceleration of gravity
water hammer pressure increase
pressure increasepressure increase
flow velocityflow velocity
upstream pipe lengthupstream pipe length
valve closing timevalve closing time
inlet pressureinlet pressure

References - Books:
National Resources Conservation Service. National Engineering Handbook. 1995. United States Department of Agriculture.

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