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  2. Darcy–Weisbach equation - Wikipedia

    en.wikipedia.org/wiki/DarcyWeisbach_equation

    The History of the DarcyWeisbach Equation Archived 2011-07-20 at the Wayback Machine; DarcyWeisbach equation calculator; Pipe pressure drop calculator Archived 2019-07-13 at the Wayback Machine for single phase flows. Pipe pressure drop calculator for two phase flows. Archived 2019-07-13 at the Wayback Machine; Open source pipe pressure ...

  3. Darcy friction factor formulae - Wikipedia

    en.wikipedia.org/wiki/Darcy_friction_factor_formulae

    In fluid dynamics, the Darcy friction factor formulae are equations that allow the calculation of the Darcy friction factor, a dimensionless quantity used in the DarcyWeisbach equation, for the description of friction losses in pipe flow as well as open-channel flow.

  4. Moody chart - Wikipedia

    en.wikipedia.org/wiki/Moody_chart

    In engineering, the Moody chart or Moody diagram (also Stanton diagram) is a graph in non-dimensional form that relates the DarcyWeisbach friction factor f D, Reynolds number Re, and surface roughness for fully developed flow in a circular pipe. It can be used to predict pressure drop or flow rate down such a pipe.

  5. ΔP - Wikipedia

    en.wikipedia.org/wiki/ΔP

    1.1 DarcyWeisbach equation. 1.2 Lung compliance. 1.2.1 Dynamic compliance (C dyn) 1.2.2 Static compliance (C stat) 2 See also. 3 References. 4 External links.

  6. Pipe network analysis - Wikipedia

    en.wikipedia.org/wiki/Pipe_network_analysis

    n is 1.85 for Hazen-Williams and; n is 2 for DarcyWeisbach. The clockwise specifier (c) means only the flows that are moving clockwise in our loop, while the counter-clockwise specifier (cc) is only the flows that are moving counter-clockwise. This adjustment doesn't solve the problem, since most networks have several loops.

  7. Friction loss - Wikipedia

    en.wikipedia.org/wiki/Friction_loss

    First, select the desired pressure loss Δp / L, say 1 kg / m 2 / s 2 (0.12 in H 2 O per 100 ft) on the vertical axis (ordinate). Next scan horizontally to the needed flow volume Q , say 1 m 3 / s (2000 cfm): the choice of duct with diameter D = 0.5 m (20 in.) will result in a pressure loss rate Δ p / L less than the target value.

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  9. Flow distribution in manifolds - Wikipedia

    en.wikipedia.org/wiki/Flow_distribution_in_manifolds

    Fig. 1. Manifold arrangement for flow distribution. Traditionally, most of theoretical models are based on Bernoulli equation after taking the frictional losses into account using a control volume (Fig. 2). The frictional loss is described using the DarcyWeisbach equation. One obtains a governing equation of dividing flow as follows: Fig. 2.