Results 261 to 270 of about 394,147 (307)
Some of the next articles are maybe not open access.
Discharge Coefficients of Fire Nozzles
Journal of Basic Engineering, 1966The most efficient nozzle is generally considered to be that for which the discharge coefficient is nearest unity. Forms and dimensions of the nozzles being equal, the greater the discharge coefficient, the less the jet turbulence becomes. The inefficiency of fire streams is directly attributable to the inital turbulence of the jet and this turbulence ...
Mitsukiyo Murakami, Kinji Katayama
openaire +1 more source
The discharge coefficient of effervescent atomizers
Experimental Thermal and Fluid Science, 2010Abstract The paper contains the results of experimental investigation of air–water atomization process in effervescent nozzles with internal mixing. The aim of study was analysis of pressure drop and discharge coefficient. The study was carried out at liquid flow rates changed from 0.0014 to 0.011 [kg/s] and gas flow rates from 0.00015 to 0.0065 [kg ...
M. Ochowiak +2 more
openaire +1 more source
Discharge coefficient of subsurface weirs
Proceedings of the Institution of Civil Engineers - Water Management, 2014Experimental and numerical studies were performed to examine the relationship between the hydraulic properties and physical dimensions of a subsurface weir system and the discharge over it under steady-state conditions. Experimental modelling was based on a laboratory-scale physical sand-tank model, within which a subsurface dam and weir structure was
Abdorreza Kabiri-Samani +1 more
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Discharge coefficients of diaphragms and nozzles
Measurement Techniques, 19591. The table of initial discharge coefficients of diaphragms should be corrected by taking the coefficient value 0.646 (instead of 0.645) for the 0.35 modulus. 2. The functional dependence of the initial discharge coefficient on the modulus of flow-contraction devices, represented by a polynomial of the 4th degree, yields deviations from
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
Discharge coefficient of a rectangular labyrinth weir
Proceedings of the Institution of Civil Engineers - Water Management, 2013A rectangular labyrinth weir has a very good flood release capacity as well as strong economical and structural advantages. In this study, combined analytical and experimental investigations were undertaken for a rectangular labyrinth weir. The analytical model is based on the synthesis of general weir equations and spatially varied flow dynamic ...
Abdorreza Kabiri-Samani +2 more
openaire +1 more source
A note on the discharge coefficients of annular orifices
The Aeronautical Journal, 1989Discharge coefficients for annular orifices formed between pistons and a cylindrical bore are reported for twelve pistons having orifice length to gap ratios in the range 12 to 50. Square-edged, radiused and tapered orifices are examined at high fluid pressure differentials with Reynolds number varying in the range 500-4000.
C. J. Hooke +2 more
openaire +1 more source
Calculation of the Townsend Discharge Coefficients and the Paschen Curve Coefficients
Contributions to Plasma Physics, 2007AbstractThe determination of Paschen curve coefficients A and B and the first and second Townsend coefficient are discussed for the creation of gas discharges from extraordinary gasses. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
openaire +1 more source
ِِDischarge Coefficient in Oblique Side Weirs
2007Side 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.
openaire +1 more source