- Fanning friction factor
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коэффициент трения (в уравнениях Феннинга для расчёта потери напора потока)
Англо-русский словарь технических терминов. 2005.
Fanning friction factor
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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
Friction factor — can refer to:* Darcy friction factor * Fanning friction factor * Atkinson friction factor (ventilation of mines) See also *coefficient of friction … 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 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
Fanning — can refer to:* Tabuaeran, also known as Fanning Atoll or Fanning Island, one of the Line Islands of the central Pacific Ocean. * Fanning (firearms), a revolver shooting technique in which one hand holds the revolver and the other hits the… … 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
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
Dimensionless quantity — In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a pure number, and as such always has a dimension of 1.[1] Dimensionless quantities are widely used… … Wikipedia
Atkinson resistance — is commonly used in mine ventilation to characterise the resistance to airflow of a duct of irregular size and shape, such as a mine roadway. It has the symbol R and is used in the square law for pressure drop,:Delta P = frac{ ho {actual{ ho… … Wikipedia
Fanno flow — refers to adiabatic flow through a constant area duct where the effect of friction is considered. Compressibility effects often come into consideration, although the Fanno flow model certainly also applies to incompressible flow. For this model,… … Wikipedia
