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relative roughness

См. также в других словарях:

  • Pressure drop — For other uses, see Pressure Drop (disambiguation). Pressure drop is a term used to describe the decrease in pressure from one point in a pipe or tube to another point downstream. Pressure drop is the result of frictional forces on the fluid as… …   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

  • 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

  • Pipe Networks — generally refers to a common problem in Hydraulic Design. In order to direct water to many individuals in a municipal water supply, many times the water is routed through a Water supply network. A major part of this network may consist of… …   Wikipedia

  • Reynolds number — In fluid mechanics and heat transfer, the Reynolds number mathrm{Re} is a dimensionless number that gives a measure of the ratio of inertial forces ({old mathrm V} ho) to viscous forces (mu / L) and, consequently, it quantifies the relative… …   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–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

  • OMBECK — GERMANY (see also List of Individuals) 29.5.1886 Essen/D 27.12.1963 Wiesbaden/D Hugo Ombeck graduated as a mechanical engineer from the Darmstadt Technical University in 1911 and submitted a PhD thesis two years later. His entire career until… …   Hydraulicians in Europe 1800-2000

  • Vortex induced vibration — Vortex induced vibrations (VIV) are motions induced on bodies facing an external flow by periodical irregularities on this flow. The classical example is the VIV of an underwater cylinder. You can see how this happens by putting a cylinder into… …   Wikipedia

  • Caloris Group — The Caloris group is a set of geologic units on Mercury. McCauley and others[1] have proposed the name “Caloris Group” to include the mappable units created by the impact that formed the Caloris Basin and have formally named four formations… …   Wikipedia

  • относительная шероховатость — Отношение средней шероховатости к характерному размеру системы [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом EN relative roughness …   Справочник технического переводчика

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