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  2. Manning formula - Wikipedia

    en.wikipedia.org/wiki/Manning_formula

    Sewers are often constructed as circular pipes. It has long been accepted that the value of n varies with the flow depth in partially filled circular pipes. [9] A complete set of explicit equations that can be used to calculate the depth of flow and other unknown variables when applying the Manning equation to circular pipes is available. [10]

  3. Hydraulic diameter - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_diameter

    For a fully filled duct or pipe whose cross-section is a convex regular polygon, the hydraulic diameter is equivalent to the diameter of a circle inscribed within the wetted perimeter. This can be seen as follows: The N {\displaystyle N} -sided regular polygon is a union of N {\displaystyle N} triangles, each of height D / 2 {\displaystyle D/2 ...

  4. Fanning friction factor - Wikipedia

    en.wikipedia.org/wiki/Fanning_friction_factor

    is the roughness of the inner surface of the pipe (dimension of length) D is inner pipe diameter; The Swamee–Jain equation is used to solve directly for the Darcy–Weisbach friction factor f for a full-flowing circular pipe. It is an approximation of the implicit Colebrook–White equation. [10]

  5. Albert Strickler - Wikipedia

    en.wikipedia.org/wiki/Albert_Strickler

    In civil engineering practice, the Manning formula is more widely used than Stricker’s dimensionally homogeneous form of the equation. However, Strickler’s observations on the influence of surface roughness and the concept of relative roughness are common features of a variety of formulas used to estimate hydraulic roughness.

  6. Chézy formula - Wikipedia

    en.wikipedia.org/wiki/Chézy_formula

    The Chézy Formula is a semi-empirical resistance equation [1] [2] which estimates mean flow velocity in open channel conduits. [3] The relationship was conceptualized and developed in 1768 by French physicist and engineer Antoine de Chézy (1718–1798) while designing Paris's water canal system.

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  8. Darcy–Weisbach equation - Wikipedia

    en.wikipedia.org/wiki/Darcy–Weisbach_equation

    , the hydraulic diameter of the pipe (for a pipe of circular section, this equals D; otherwise D H = 4A/P for a pipe of cross-sectional area A and perimeter P) (m); v {\displaystyle \langle v\rangle } , the mean flow velocity , experimentally measured as the volumetric flow rate Q per unit cross-sectional wetted area (m/s);

  9. All About Arch Manning's Dad Cooper Manning — and How ... - AOL

    www.aol.com/arch-mannings-dad-cooper-manning...

    Cooper Manning and Ellen Manning with their son Arch at a university of Tennessee football game. Cooper's roots in Louisiana began when his father, Archie, was drafted to play for the New Orleans ...