Water Hammer Pressure Increase Formula |
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\( WH_{pi} \;=\; \dfrac{ \rho \cdot v \cdot \Delta v }{ 2 \cdot g }\) (Water Hammer Pressure Increase) \( \rho \;=\; \dfrac{ 2 \cdot g \cdot WH_{pi} }{ v \cdot \Delta v }\) \( v \;=\; \dfrac{ 2 \cdot g \cdot WH_{pi} }{ \rho \cdot \Delta v }\) \( \Delta v \;=\; \dfrac{ 2 \cdot g \cdot WH_{pi} }{ \rho \cdot v }\) \( g \;=\; \dfrac{ \rho \cdot v \cdot \Delta v }{ 2 \cdot WH_{pi} }\) |
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| Symbol | English | Metric |
| \( WH_{pi} \) = Water Hammer Pressure Increase (psi) | \(lbf\;/\;in^2\) | \(Ps\) |
| \( \rho \) (Greek symbol rho) = Fluid Density | \(lbm\;/\;ft^3\) | \(kg\;/\;m^3\) |
| \( v \) = Fluid Velocity | \(ft\;/\;sec\) | \(m\;/\;s\) |
| \( \Delta v \) = Fluid Velocity Change | \(ft\;/\;sec\) | \(m\;/\;s\) |
| \( g \) = Gravitational Acceleration | \(ft\;/\;sec^2\) | \(m\;/\;s^2\) |
