Solving for flow rate or discharge

Note: Valid only for ambient temperatures and turbulent flow

Hazen Williams friction coefficient (C) = 0 = 0 |

pipe diameter (D) = 0 = 0 inch |

hydraulic grade line slope (s) = 0 = 0 |

flow rate or discharge (Q) = NOT CALCULATED |

Select an equation to solve for a different unknown

Mean Fluid Velocity

mean flow velocity | |

friction coefficient | |

hydraulic radius | |

hydraulic grade line slope |

Fluid Flow Rate

discharge or flow rate | |

friction coefficient | |

pipe diameter | |

hydraulic grade line slope |

Where

v | = | mean flow velocity |

C | = | Hazen Williams friction coefficient |

r | = | hydraulic radius |

s | = | hydraulic grade line slope |

Q | = | flow rate or discharge |

D | = | pipe diameter |

Reference - Books:

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

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