Solving for hydraulic radius of a fully, half or partially filled pipe.

This calculator will solve steps 1 thru 7 given flow depth and radius.

step | solve for | ||

1 | circular segment height | ||

2 | central angle | ||

3 | circular segment area | ||

4 | arc length | ||

5 | flow area | ||

6 | wetted perimeter | ||

7 | hydraulic radius |

flow depth (d) =0 =0 meter |

pipe radius (r) =0 =0 meter |

hydraulic radius of a pipe (h) =NOT CALCULATED |

Select an equation to solve for a different unknown

hydraulic radius

hydraulic radius | |

area of section flow | |

wetted perimeter | |

hydraulic radius of a pipe |

mean depth

mean depth | |

area of section flow | |

top water surface width |

Froude number

Froude number | |

flow velocity | |

acceleration of gravity | |

mean depth |

References - Books:

U.S. Department of the Interior Bureau of Reclamation. Water Resources Research Laboratory: Water Measurement Manual. Washington DC, 2001.

Lindeburg, Michael R. 1992. Engineer In Training Reference Manual. Professional Publication, Inc. 8th Edition.

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