Guide alphabétique, de la thermodynamique, amplification de chaleur, transfert de masse, et dynamique des fluides
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The static head, sometimes referred to as the pressure head, is a term primarily used in Hydraulics to denote the static pressure in a pipe, channel, or duct flow. It has the physical dimensions of length (hence the term "head") and represents the flow-work per unit weight of fluid. In practice the static head is equivalent to the vertical distance from a given streamtube to the piezometric head line or the hydraulic gradient line. If P is the pressure in a streamtube, the static head is defined by P/ρg. Using this definition it is apparent that in a open channel flow, where the pressure is assumed to be hydrostatic, the static head is the distance from the streamtube to the water surface.

Nombre de vues : 67384 Article ajouté : 2 February 2011 Dernière modification de l'article : 16 March 2011 © Copyright 2010-2021 Retour en haut de page