- An equation used to compute the velocity of uniform flow in open channel: V=1.486/n R2/3 S1/2, where V is the mean velocity of flow (in cfs units), R is the hydraulic radius in feet, S is the slope of the channel or sine of the slope angle, and n is the Manning roughness coefficient .
A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. Courtesy of the author & The Karst Waters Institute. 2002.
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Manning formula — The Manning formula, known also as the Gauckler–Manning formula, or Gauckler–Manning–Strickler formula in Europe, is an empirical formula for open channel flow, or free surface flow driven by gravity. It was first presented by the French engineer … 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
Chézy equation — An equation used to compute the velocity of uniform flow in an open channel: mean velocity of flow (V) equals the Chézy coefficient © times the square root of the product of hydraulic radius in feet (R) times the slope of the channel .… … Lexicon of Cave and Karst Terminology
Robert Manning (engineer) — Robert Manning (1816 1897) was an Irish engineer. He is known for creation of the Manning formula.Manning was born in Normandy, France, in 1816, a year after the battle of Waterloo, in which his father had taken part. He died in 1897. In 1826, he … Wikipedia
Fluid dynamics — Continuum mechanics … Wikipedia
Froude number — A dimensionless numerical quantity used as an index to characterize the type of flow in a hydraulic structure that has the force of gravity (as the only force producing motion) in conjunction with the resisting force of inertia. It is the… … Lexicon of Cave and Karst Terminology
Reynolds number — A numerical quantity used as an index to characterize the type of flow in a hydraulic structure in which resistance to motion depends on the viscosity of the liquid in conjunction with the resisting force of inertia. It is the ratio of inertia … Lexicon of Cave and Karst Terminology
Streamflow — Streamflow, or channel runoff, is the flow of water in streams, rivers, and other channels, and is a major element of the water cycle. It is one component of the runoff of water from the land to waterbodies, the other component being surface… … Wikipedia
SYSTÈMES DYNAMIQUES DIFFÉRENTIABLES — Sans doute née avec le mémoire que Poincaré écrivit en 1881 «sur les courbes définies par des équations différentielles», où l’étude quantitative (analytique) locale des équations différentielles dans le champ complexe est remplacée par leur… … Encyclopédie Universelle