- darcy friction factor
- 达桅擦因数
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
darcy friction factor
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Darcy friction factor formulae — In fluid dynamics, the Darcy friction factor formulae are equations based on experimental data and theory for the Darcy friction factor. The Darcy friction factor is a dimensionless quantity used in the Darcy–Weisbach equation, for the… … Wikipedia
Friction factor — can refer to:* Darcy friction factor * Fanning friction factor * Atkinson friction factor (ventilation of mines) See also *coefficient of friction … Wikipedia
Fanning friction factor — The Fanning friction factor is a dimensionless number used in fluid flow calculations. It is related to the Shear stress at the wall as:: au = frac{ f ho v^2}{2}where:* au is the shear stress at the wall *f is the Fanning friction factor of the… … Wikipedia
Atkinson friction factor — is a measure of the resistance to airflow of a duct. It is widely used in the mine ventilation industry but is rarely referred to outside of it.Atkinson friction factor is represented by the symbol k and has the same units as air density… … Wikipedia
Darcy–Weisbach equation — In fluid dynamics, the Darcy–Weisbach equation is a phenomenological equation, which relates the head loss or pressure loss due to friction along a given length of pipe to the average velocity of the fluid flow. The equation is named after Henry… … Wikipedia
Darcy-Weisbach equation — The Darcy Weisbach equation is an important and widely used phenomenological equation in hydraulics. It relates the head loss or pressure loss due to friction along a given length of pipe to the average velocity of the fluid flow. Head loss form… … Wikipedia
Darcy (disambiguation) — Contents 1 Science 2 People 2.1 Surnames 2.2 First names … Wikipedia
Darcy-Weisbach equation — An empirical equation given as which states that in contrast to laminar flow, the average volumetric discharge of flow is directly proportional to the square root of the driving force and that the friction loss is equal to the hydraulic head… … Lexicon of Cave and Karst Terminology
Équation de Darcy-Weisbach — L équation de Darcy Weisbach est une importante équation très utilisée en hydraulique[Paraschivoiu 1]. Elle permet de calculer la perte de charge due à la rugosité des conduites (« perte de charge linéaire », par opposition aux pertes… … Wikipédia en Français
Moody chart — The Moody chart or Moody diagram is a graph in non dimensional form that relates the Darcy friction factor, Reynolds number and relative roughness for fully developed flow in a circular pipe. It can be used for working out pressure drop or flow… … Wikipedia
Hagen-Poiseuille equation — The Hagen Poiseuille equation is a physical law that describes slow viscous incompressible flow through a constant circular cross section. It is also known as the Hagen Poiseuille law, Poiseuille law and Poiseuille equation.Equationtandard fluid… … Wikipedia
