Water Hammer Maximum Surge Pressure Head
Water Hammer Maximum Surge Pressure Head Formula |
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\(\large{ h_{sph} = \frac { \alpha \; \Delta v } { g } }\) (maximum surge pressure head) \(\large{ p_{spf} = \frac { \alpha \; \Delta v \; \gamma_f } { 144\; g } }\) (maximum surge pressure for a fluid) \(\large{ p_{spw} = \frac { \alpha\; \Delta v } { 2.31\;g } }\) (maximum surge pressure for a water) |
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| Symbol | English | Metric |
| \(\large{ p_{spf} }\) = maximum surge pressure for fluid | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
| \(\large{ p_{spw} }\) = maximum surge pressure for water | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
| \(\large{ h_{sph} }\) = maximum surge pressure head | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
| \(\large{ \Delta v }\) = fluid velocity change | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |
| \(\large{ g }\) = gravitational acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) |
| \(\large{ \alpha }\) (Greek symbol alpha) = pressure wave velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |
| \(\large{ \gamma_f } \) (Greek symbol gamma) = unit weight of fluid | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{N}{m^3}}\) |
