# Water Hammer Equations Formulas Design Calculator

Fluid Mechanics Hydraulics Pipe Flow

Solving for fluid unit weight.

## Inputs:

maximum surge pressure (Psurge fluid)
acceleration of gravity (g)
pressure wave velocity (a)
fluid velocity change (ΔV)

## Conversions:

maximum surge pressure (Psurge fluid)
= 0
= 0
pound/inch^2
acceleration of gravity (g)
= 0
= 0
foot/second^2
pressure wave velocity (a)
= 0
= 0
foot/second
fluid velocity change (ΔV)
= 0
= 0
foot/second

## Solution:

unit weight of fluid (γ)
= NOT CALCULATED

## Other Units:

Change Equation
Select to solve for a different unknown
maximum surge pressure head
 maximum surge pressure head in length of fluid pressure wave velocity fluid velocity change acceleration of gravity
maximum surge pressure for a fluid
 maximum surge pressure for a fluid pressure wave velocity fluid velocity change unit weight of fluid acceleration of gravity
maximum surge pressure for water
 maximum surge pressure for water pressure wave velocity water velocity change acceleration of gravity
water hammer pressure increase
 pressure increase flow velocity upstream pipe length valve closing time inlet pressure

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

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By Jimmy Raymond

Contact: aj@ajdesigner.com