# coefficient of discharge

## coefficient of discharge

[¦kō·ə′fish·ənt əv ′dis‚chärj]
(fluid mechanics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## coefficient of discharge

1.The ratio of the actual discharge of water through an opening to its corresponding theoretical value.
2. The ratio of effective area to the free area of an air diffuser.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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References in periodicals archive ?
There is a numerical constant called the Orifice Coefficient of Flow or Coefficient of Discharge, used in calculating fluid flow efficiency through a constriction.
Evaluation of the coefficient of discharge is helpful in predicting the pressure losses across the orifice.
Som, "Numerical prediction of air core diameter, coefficient of discharge and spray cone angle of a swirl spray pressure nozzle," International Journal of Heat and Fluid Flow, vol.
[A.sub.L] = [Q.sub.r] [square root of ([rho]/2[DELTA][P.sub.r]/[C.sub.d])] (2) Coefficient of Discharge
Orifice metering relies on the Reynolds Law of Similarity to predict the meter's coefficient of discharge and control its measurement accuracy (Figure 1).
Effect of Number and Thickness of Vortex breaker on the coefficient of discharge in shaft spillway, National Conference of Water, Soil, Plant Science and Agricultural Machinery in IAU Dezful Branch.
 investigated the coefficient of discharge for a combined rectangular weir and semi-circular gate.
where: [Q.sub.gate] = discharge (spillway gate flow); [C.sub.d] = coefficient of discharge, typically 0.5-0.7; w = vertical opening of gate; B = gate width; g = gravitational constant; and H = a head term.
In addition, the HBX does not need black box or signal conditioning due to linear coefficient of discharge;
The filling patterns of various aluminum gating systems for sand casting recently were investigated by observing both water modeling and molten aluminum via a new video capturing technique, allowing each systems' coefficient of discharge to be measured.
The coefficient of discharge of the melt from the skull crucible in relation to the powder plasma arc is shown in Fig.

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