دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. the height of a column of liquid required to produce a specific pressure. See hydraulic head. 2. for centrifugal pumps, the velocity of flowing fluid converted into pressure expressed in feet or metres of flowing fluid. Also called velocity head. 3.that part of a machine (such as a pump or an engine) that is on the end of the cylinder opposite the crankshaft. Also called cylinder head.

n: refer tohydraulic head

n: the force exerted by a column of liquid expressed by the height of the liquid above the point at which the pressure is measured. Although head" refers to distance or height, it is used to express pressure, since the force of the liquid column is directly proportional to its height. Also called head or hydrostatic head. Compare hydrostatic pressure.

n: The force per unit area exerted by a column of liquid at a height above a depth (and pressure) of interest. Fluids flow down a hydraulic gradient, from points of higher to lower hydraulic head. The term is sometimes used synonymously with hydrostatic head

pressure exerted by a column of liquid.