Fluid Mechanics and Hydraulics

Solving for impeller inlet pressure

net positive suction head (NPSH)

= 0

= 0

meter

fluid velocity (V)

= 0

= 0

meter/second

liquid vapor pressure (p_{v})

= 0

= 0

newton/meter^2

acceleration of gravity (g)

= 0

= 0

meter/second^2

fluid specific weight (SW)

= 0

= 0

newton/meter^3

impeller inlet pressure (p)

= NOT CALCULATED

Select to solve for a different unknown

Water Horsepower

Solve for water horsepower | |

Solve for flow rate or discharge | |

Solve for total head | |

Solve for pump efficiency | |

Solve for brake horsepower |

Net Positive Suction Head and Cavitation

Where

WHP | = | water horsepower |

Q | = | flow rate or discharge |

H | = | total head |

n | = | pump efficiency |

BHP | = | brake horsepower |

NPSH | = | net positive suction head |

V | = | velocity of fluid or liquid |

p | = | impeller inlet pressure |

p_{v} | = | vapor pressure of fluid or liquid |

SW | = | specific weight of fluid or liquid |

g | = | acceleration of gravity |

References - Books:

1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.

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