# Water Hammer Equations Formulas Design Calculator

## Fluid Mechanics Hydraulics Pipe Flow

Solving for fluid velocity change.

#### Inputs:

 maximum surge pressure (Psurge fluid) pascal atmosphere bar dyne/centimeter^2 foot of water inch of mercury inch of water kilonewton/meter^2 millibar millimeter of mercury newton/meter^2 pound/foot^2 pound/inch^2 torr acceleration of gravity (g) meter/second^2 centimeter/second^2 foot/second^2 inch/second^2 kilometer/second^2 mile/second^2 millimeter/second^2 yard/second^2 pressure wave velocity (a) meter/second centimeter/hour centimeter/second foot/day foot/second inch/hour inch/second kilometer/hour kilometer/second knot mach sea level 15 C meter/day mile/hour mile/second millimeter/second speed of light in vacuum yard/second unit weight of fluid (γ) pound/foot^3

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#### 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 unit weight of fluid (γ) = 0 = 0 pound/foot^3

#### Solution:

 fluid velocity change (ΔV) = HAS NOT BEEN CALCULATED

#### Other Units:

Change Equation
Select an equation to solve for a different unknown

 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.

by Jimmy Raymond