Injector discharge coefficient
WebbCoefficient of the discharge coefficient regression. G: Coefficient of the discharge coefficient regression \(\dot m\): Mass flow rate of the nozzle \(\dot m_o \): Mass flow rate of one orifice of the nozzle \(\dot M_o \): Momentum flux at the orifice outlet. P i: Injection pressure. P b: Downstream pressure (backpressure) P v: Vaporisation ... Webb3 orifice ch L Characteristic Length m& Mass flow rate r Radial position Re Reynolds number V Total velocity ch V Characteristic Velocity i,max V Inner injector maximum velocity o,max V Outer injector maximum velocity We Weber number z Axial position a ρ Air density l ∆P Liquid pressure drop l ρ Liquid density σ Liquid surface tension l µ …
Injector discharge coefficient
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Webb1 nov. 2024 · Three types of orifices, including primary, secondary, and film-cooling orifices, were utilized to characterize the discharge coefficient and understand each orifice flow pattern with high-speed imaging. Each of these orifices will be separated and tested in their… Expand View via Publisher Save to Library Create Alert Cite Related … Webb5 mars 2024 · The gas throughput capacity of the different orifice sizes is based standard conditions of 14.65 psia and 60°F for a gas gravity of 0.65 and an orifice discharge coefficient of 0.865. Fig. 1-Orifice or choke daily injection-gas throughput rates for 8 18/64-in.-ID orifices.
WebbCalculations. The relationships for flow rate, pressure loss and head loss through orifices and nozzles are presented in the subsequent section. These relationships all utilise the parameter \beta β, the ratio of orifice to pipe diameter which is defined as: \displaystyle \beta = \frac {D_ {o}} {D_ {1}} β = D1Do. http://edge.rit.edu/edge/P18102/public/Testing/Subsystem%20Tests/Injector%20Testing
http://web.mit.edu/2.61/www/Lecture%20notes/Lec.%2016%20Diesel%20inj,mixing,combustion.pdf Webb10 jan. 2015 · The discharge coefficient was decreased linearly before the pintle opening distance of 0.75 mm and then, the coefficient was slightly increased. Spray images were captured by a CMOS camera with high resolution. …
WebbThe discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to …
WebbTranscribed Image Text: 8.4 A closed type injector has a nozzle orifice diameter of 0.949 mm and the maximum cross sectional area of the passage between the needle cone and the seat is 1.75 mm2. The discharge coefficient for the orifice is 0.85 and for the passage is 0.80. The injection pressure is 175 bar and the average pressure of charge during … ethereal outletWebb3.1. Injector hydraulics Discharge coefficients of the injectors were assessed through cold-flow tests conducted at ambient pressure using water as the medium fluid and the results are listed in Table 1. Obviously, the degree of a recess does not affect the discharge coefficient at cold conditions. Deviations of ethereal outfitWebbNIST Technical Series Publications fire ground building sidesWebbGCI criteria. The calculated discharge coefficients obtained by means of two turbulence models were compared to the expected values from the ISO Standard 5167:2003 equations (ISO, 2003). 2. SIMULATIONS 2.1 Governing equations The calculation of steady state incompressible flow is accomplished by solving the mass and momentum … fireground safety officer powerpointWebb1 jan. 2024 · The discharge coefficient of an orifice has been studied widely [15, 16], many models have been proposed. For a pintle injector, the discharge coefficient of … ethereal oxygenWebb31 mars 2024 · In this work, electrical tree inception and ageing experiments were conducted to investigate the initiation, growth characteristics and structural characteristics of electrical trees of nano-SiO 2 doped epoxy resin at different temperatures. Electrical tree inception and ageing experiments were conducted using power frequency voltage of 15 … ethereal oxygen speciesWebbThis makes the discharge coefficient of the swirl injector be much lower than those of the other injectors. Previous researchers such as Taylor [4], Rizk and Lefebvre [5], and Jones [6] in the Western world found that the discharge coefficient is a function of inlet port diameter, the the swirl chamber diameter, and exit orifice the diameter. fire ground pokemon weaknesses