Results 261 to 270 of about 260,166 (304)

Nozzle Discharge Coefficient

2015
Four ASME (PTC 6) flow nozzles were manufactured together with upstream and downstream pipework in two pipe sizes. Throat and wall tappings were used. The flow nozzles were calibrated in water and in high-pressure nitrogen at 20 and 60 barg. The wall-tapping data are in excellent agreement with the discharge-coefficient equation in ISO 5167-3:2003: all
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Discharge Coefficient of Rectangular Side Weirs

Journal of Irrigation and Drainage Engineering, 1994
The characteristics of flow over side weirs are taken into account to determine the discharge coefficient for subcritical flow conditions under the assumption of constant‐specific energy. The main‐channel discharge, length of the weir crest, and sill height of the weir are treated as the controlled variables.
R. Singh, D. Manivannan, T. Satyanarayana   +2 more
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Orifice Discharge Coefficient

2015
The discharge coefficient is required to measure flow using a differential-pressure meter. This chapter considers the discharge-coefficient equation for orifice plates: its history, some older equations, the database collected mostly in the 1980s and the analysis.
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Briefing: Discharge coefficient for sluice gates

Proceedings of the Institution of Civil Engineers - Water Management, 2010
Using the theory of potential flow, an equation has been developed to determine the discharge coefficient of a sluice gate (Cd). To assess the developed equation for Cd, 84 laboratory experiments were conducted. Comparison of Cd values determined from experiments and calculated from the proposed equation gave very good results. Comparisons between the
S. Bagheri, H. Afzalimehr, J. Sui
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Discharge Coefficients for Baffle-Sluice Gates

Journal of Irrigation and Drainage Engineering, 2013
AbstractIn this work, the discharge coefficients of four well-defined operation stages of baffle-sluice gates are presented and modeled using the individual contributions of weir and sluice flow components. Existing empirical relationships proved effective to model the discharge.
Mishra, P. K., Brevis, W., Lang, C.
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The Effect of Rotation of Discharge Hole on the Discharge Coefficient and Pressure Coefficient

Transactions of the Korean Society of Mechanical Engineers B, 2003
Pressure coefficient in rotating discharge hole was measured to gain insight into the influence of rotation to the discharge characteristics of rotating discharge hole. Pressure measurements were done by the telemetry system that had been developed by the authors.
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Sluice Gates with High Discharge Coefficients

Journal of the Irrigation and Drainage Division, 1978
The present study was undertaken to obtain higher values of C o r a sluice gate by avoiding the downstream contraction caused by the conventional gate lips. To this end, a cylindrical lip was attached to the bottom of the gate to let the flow cling to the gate exit section.
Amruthur S. Ramamurthy, Bidya S. Pani, Kanakati Subramanya   +2 more
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ِِDischarge Coefficient in Oblique Side Weirs

2007
Side weirs are flow diversion devices that are widely used in irrigation, drainage and urban sewage systems. The present study focuses on the investigation of the effect of oblique side weirs on the discharge coefficient of a side weir under subcritical flow condition in rectangular channels.
HONAR, T., JAVAN, M.
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Discharge coefficients of double bevel diaphragms

Measurement Techniques, 1960
1. The values of the initial coefficients of discharge for double-bevel diaphragms were determined for moduli of 0.0905, 0.1624, 0.2504 and 0.3694 in the Re range of 240 to 1900. 2. The root-mean-square error of the initial discharge coefficient did not exceed 0.18%. 3.
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Discharge Coefficient of Small Submerged Orifices

Proceedings of the Institution of Mechanical Engineers, 1959
This paper deals with the variation in discharge of small submerged orifices used in aero-control systems. It is shown that the effects of cavitation can be high and can cause changes of discharge coefficient greater than those associated with Reynolds number when the flow is turbulent.
R. H. Spikes, G. A. Pennington
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