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  2. Darcy–Weisbach equation - Wikipedia

    en.wikipedia.org/wiki/DarcyWeisbach_equation

    μ is the dynamic viscosity of the fluid (Pa·s = N·s/m 2 = kg/(m·s)); Q is the volumetric flow rate, used here to measure flow instead of mean velocity according to Q = ⁠ π / 4 ⁠ D c 2 <v> (m 3 /s). Note that this laminar form of Darcy–Weisbach is equivalent to the Hagen–Poiseuille equation, which is analytically derived from the ...

  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 Darcy–Weisbach 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 Darcy–Weisbach 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

    In general, compliance is defined by the change in volume (ΔV) versus the associated change in pressure (ΔP), or ΔV/ΔP: = During mechanical ventilation, compliance is influenced by three main physiologic factors:

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  7. Jim Carrey Clarifies His Retirement Comments: It's 'More ...

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    Jim Carrey isn't swearing off acting for good.. The actor returns to the big screen in the new sequel Sonic the Hedgehog 3 after previously saying in 2022 that he was "being fairly serious" about ...

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    Canasta for Two. Now you can go head to head as you create melds of cards of the same rank and then go out by playing or discarding all the cards in your hand.

  9. Talk:Darcy–Weisbach equation - Wikipedia

    en.wikipedia.org/wiki/Talk:DarcyWeisbach_equation

    It contains a part that is solidly grounded in theory (the v^2/2g term, and to a lesser extent the L/D term) and the term "semi-empirical equation" is in more common use than "phenomenological equation"Mikejens 16:06, 12 November 2008 (UTC) The Darcy–Weisbach equation is exact for laminar flow and can be derived theoretically.