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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance

    of nozzle geometry on jet flow regime and nozzle cavitation. The characteristics of the extern al jet or spray depend on the st ability of the flow emerging from the orifice.

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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance ...

    2018-2-17 · This paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles. In order to facilitate the research, an air-jet text...

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  • E ect of nozzle geometry on air-jet texturing performance

    2017-3-10 · E ect of nozzle geometry on air-jet texturing performance This item was submitted to Loughborough University's Institutional Repository by the/an author. Citation: BILGIN, S., VERSTEEG, H.K. and ACAR, M., 1996. E ect of nozzle geometry on air-jet texturing performance. extilTe Research Journal, 66 (2), pp.83-90

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  • On the influence of nozzle geometry on jet diffusion ...

    2020-3-1 · As the fuel jet velocity increased, the nozzle geometry had a significant influence on the flame blow-out limit, the blow-out velocity of the triangle nozzle was the maximum, and the rectangular nozzle was minimum. The nozzle geometry had a significant influence on the down-wash and lift-off of the flame under cross-wind conditions.

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  • Experimental Analysis on the Influence of Nozzle Geometry ...

    2015-10-12 · Understanding and controlling mixing and combustion processes is fundamental in order to face the challenges set by the ever more demanding pollutant regulations and fuel consumption standards of direct injection diesel engines. The fundamentals of these processes haven been long studied by the diesel spray community from both experimental and numerical perspectives.

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  • A Review on Effect of Nozzle Hole Geometry on the ...

    2020-1-22 · nozzle geometry with 5 hole having an orifice diameter of 0.3 mm. That may be due to atomization, spray characteristics and mixing with air were better, resulting in improved combustion. The BTE was found to be 28.5% at 80% load and its maximum value obtained with 5 hole nozzle at an injection opening pressure of 205 bar.

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  • Effect of nozzle geometry on the gas dynamics and ...

    2019-8-15 · This study also considered the effect the nozzle geometry has on the evaporation of the suspension. It was found that the longer the combustion chamber the lower the maximum evaporation rate. Moreover, higher particle concentrations result in evaporation commencing closer to the nozzle inlet due to the lower volatile fraction of the suspension.

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  • Effect of nozzle geometry on the performance of laser ...

    2016-4-13 · The performance of “ablation mode” laser propulsion thrusters can be improved obviously by nozzle constraint. The nozzle geometry of “ablation mode” laser propulsion thrusters has been studied experimentally with CO 2 lasers. Experimental results indicate that the propulsion performance of cylindrical nozzle thrusters is better than expansionary nozzle thrusters at the same lengths.

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  • Effect of jet nozzle geometry on flow and heat transfer ...

    2016-1-25 · jet nozzle pitch, m. P. wall static pressure, Pa. P tj. jet air total pressure, Pa. P se. outlet static pressure, Pa. q w. wall heat flux, W/m 2. r. radius of circle, m. Re. Reynolds number based on D h1 and V j. Re D. Reynolds number based on D h2 and U. T j. jet air temperature, K. T w. target wall temperature, K. U. mean axial velocity, m/s ...

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  • Jet Nozzle - an overview

    The wear of the nozzles depends on several parameters, among others operating pressure, water quality, nozzle design and material. As Fig. 3.26 shows, three stages can be distinguished during the performance of a discontinuous nozzle: (i) an introduction stage, (ii) a continuous stage, and (iii) a wear stage. It is interesting to note that the flow conditions improve in the introduction state.

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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance ...

    2018-2-17 · This paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles. In order to facilitate the research, an air-jet text...

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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance ...

    2018-2-17 · In order to facilitate the research, an air-jet texturing nozzle with a rectangular cross section has been developed. The texturing performance of the nozzles is assessed by means of process observations and on-line measurement of stabilizing zone tension, and also by measuring the in creased linear density of the yams on textured yarn samples.

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  • A Review on Effect of Nozzle Hole Geometry on the ...

    2020-1-22 · nozzle geometry with 5 hole having an orifice diameter of 0.3 mm. That may be due to atomization, spray characteristics and mixing with air were better, resulting in improved combustion. The BTE was found to be 28.5% at 80% load and its maximum value obtained with 5 hole nozzle at an injection opening pressure of 205 bar.

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  • (PDF) Modelling the Influence of the Nozzle Geometry on ...

    130 Modelling the influence of the nozzle geometry on the primary breakup of diesel jets particle motion through the viscous drag and conversely, there is a counteracting influence of the particle ...

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  • (PDF) Influence of the Nozzle Shape on the Breakup ...

    In this work, the influence of nozzle shape on microfluidic ink jet breakup is investigated. First, an industrial ink used in continuous inkjet (CIJ) printing devices is selected.

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  • Research on geometrical parameters effect of fan nozzle ...

    2018-11-15 · The pressure-inlet, pressure-outlet and wall of nozzle jet were defined by Grigore et al. , in which the mesh of nozzle fluid area was formatted and structured by Gambit. Khan researched the effects of nozzle geometry on air flow jet in an enclosed space. He connected the jet area to the nozzle outlet and built up a model of nozzle jet.

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  • Effect of nozzle geometry on critical-subcritical flow ...

    2019-2-24 · The geometry of converging-diverging nozzles affects the conditions at which critical-subcritical flow transition occurs. The objective of this work is to develop guidelines to identify the optimum nozzle geometry that maximizes critical pressure ratio while minimizing pressure drop across the nozzle. Experiments were conducted in a facility with 1.5 in. ID PVC pipelines and a 30 ft. long ...

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  • (PDF) Influence of Abrasive Water Jet (AWJ) on Surface ...

    The performance was assessed in terms of different parameters such as depth of cut, material removal rate, cutting efficiency, kerf geometry and cut surface topography.

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  • An experimental study on the control of plug nozzle jets ...

    2021-2-12 · The model used in the present investigation is an annular contoured plug nozzle, which is mounted in the supersonic free jet facility [26, 27].The plug contour is designed by Angelino’s approximate method for plug nozzle design [] for an exit Mach number of 1.8 at NPR (=) 5.75.The flow exiting the internal nozzle is inclined at 26.6 degrees to the x-axis, which is based on the Prandtl ...

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  • Influence of Nozzle Geometry on the Noise of High-Speed ...

    2012-5-17 · American Institute of Aeronautics and Astronautics 12700 Sunrise Valley Drive, Suite 200 Reston, VA 20191-5807 703.264.7500

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  • Effect of Nozzle Geometry and Distance on Cooling ...

    the cooling ability of the gas jet is very important in nozzle design. However, because many factors such as the nozzle shape, arrangement, distance, header pressure and radiation influence the cooling ability, accurate prediction is difficult. Effect of Nozzle Geometry and Distance on Cooling Performance of …

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  • Influence of nozzle geometry and injection conditions on ...

    nozzle and cavitation distribution in the nozzle are extremely dependent on these parameters, so the effect of cavitation on the primary breakup is not negligible. Keywords: Diesel injector, cavitation, turbulence, multi-fluid model, nozzle geometry. 1. Introduction Formation and activity of bubbles in a liquid is called cavitation.

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  • Effect of Nozzle Geometry and Distance on Cooling ...

    In order to consider the influence of the jet velocity on the surface of the SUS between the nozzles, the average jet velocity at the same distance from the nozzle center (average velocity on a concentric circle) is shown in Fig. 18. The jet velocity decreases at the stagnation point (0 mm position), but the maximum velocity near the stagnation ...

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  • PAPER OPEN ACCESS Investigating the influence of the

    2019-10-10 · Investigating the influence of the jet from three nozzle and spear design configurations on Pelton runner performance by numerical simulation To cite this article: S Petley et al 2019 IOP Conf. Ser.: Earth Environ. Sci. 240 022004 View the article online for updates and enhancements.

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  • Effect of Micro-Hole Nozzle on Diesel Spray and Combustion

    2018-4-3 · The influence of nozzle geometry on spray and combustion of diesel continues to be a topic of great research interest. One area of promise, injector nozzles with micro-holes (i.e. down to 30 μm), still need further investigation. Reduction of nozzle orifice diameter and increased fuel injection pres

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  • Influence of mouthpiece geometry on the aerosol delivery ...

    Results: Geometry of the inhaler mouthpiece had no effect on device retention or the inhaler dispersion performance. In contrast, the mouthpiece geometry strongly affected the amount of throat deposition by controlling the axial component of the exit air flow velocity. The radial motion of the emitted aerosol jet was found to have little effect ...

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  • Effects of area discontinuity at nozzle inlet on the ...

    2016-6-10 · Moreover, the cavitation erosion ability of the jet can be largely enhanced around the optimum standoff distance, depending on the type of area discontinuity and nozzle geometry. A preliminary analysis of the influence of area discontinuity on the disturbance waves in …

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  • Modeling the influence of the nozzle flow on diesel spray ...

    2017-3-15 · Modeling the influence of the nozzle flow on diesel spray atomization under high pressure injection conditions J. O.Soriano1*, M. Sommerfeld2, A. Burkhardt1and U. Leuteritz1 1Siemens VDO Automotive, Regensburg, Germany. 2Faculty ofEngineering Science, Martin Luther University Halle-Wittenberg, Halle, Germany. Abstract This paper describes a further development of a cavitation …

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  • Air Distribution Engineering Guide - Price Industries

    2014-4-28 · Proper air distribution attempts to condition the room air to maintain draft velocities and temperatures within the comfort range as defined in Chapter 4—Indoor Environmental Quality in the Price Engineer's HVAC Handbook. This velocity of air within the occupied zone is known as Room Velocity. Air Distribution Engineering Guide Space Air ...

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  • [PDF] INFLUENCE OF NOZZLE GEOMETRY ON THE PERFORMANCE

    Test results from an experimental investigation of the effect of nozzle geometry on the performance of a pulse detonation wave engine (PDE) are presented. Two detonation chamber geometries, cylindrical and annular, were tested. For each configuration, tests were conducted both with and without conical exhaust nozzles. The expansion angles of the nozzles were 9.52 and 14.24 deg. Data were ...

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  • Experimental Analysis on the Influence of Nozzle Geometry ...

    2015-10-12 · Understanding and controlling mixing and combustion processes is fundamental in order to face the challenges set by the ever more demanding pollutant regulations and fuel consumption standards of direct injection diesel engines. The fundamentals of these processes haven been long studied by the diesel spray community from both experimental and numerical perspectives.

    Get Price
  • 1587 Effect of grouped-hole nozzle geometry on the ...

    In this paper, the influence of grouped-hole nozzle geometry on biodiesel fuel atomization is investi-gated in terms of injection rate profiles, spray evo-lution, and droplet atomization performance. It is shown that grouped-hole nozzle geometry improves spray performance [9, 14] in biodiesel fuel atomiza-tion.

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  • Research on geometrical parameters effect of fan nozzle ...

    2018-10-19 · In order to determine the significance and importance order of the jet performance caused by fan nozzle's geometric parameters of aero-engine online cleaning equipment, the orthogonal experiment method, standard k–ɛ turbulence model and volume of fluid (VOF) two-phase flow algorithm are used to research the jet of fan nozzle. The sensitivity of nozzle contraction angle, nozzle area ratio ...

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  • Unraveling the Geometry Dependence of In-Nozzle

    2013-6-25 · For the case of the jet from the R-nozzle, although the jet cross-sectional distribution distorted from a circular cross section at 0.2 mm to an elliptical shape at 1.0 and 3.0 mm, the volume ...

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  • Influence of Gas-Injector Geometry on Atomization ...

    1989-12-1 · The atomizing performance an aerated-liquid nozzle is examined with special emphasis the influence gas-injector geometry spray characteristics. A Malvern spray analyzer is used to measure mean drop sizes and drop-size distributis. All measurements are carried out when spraying water into air at normal atmospheric pressure and temperature. The gas employed is nitrogen. Injecti pressures are ...

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  • Influence of mouthpiece geometry on the aerosol delivery ...

    Results: Geometry of the inhaler mouthpiece had no effect on device retention or the inhaler dispersion performance. In contrast, the mouthpiece geometry strongly affected the amount of throat deposition by controlling the axial component of the exit air flow velocity. The radial motion of the emitted aerosol jet was found to have little effect ...

    Get Price
  • Nozzle Length Effect on the Performance of the Jet-Driven ...

    2021-2-18 · Abstract— The excitation of pressure fluctuations in a model jet-driven Helmholtz oscillator is experimentally investigated. An axisymmetric channel consisted of a cylindrical chamber with a nozzle in the front cover and an outlet opening in the back one. Optimal geometric dimensions of the chamber, nozzle, and outlet were chosen to achieve the greatest amplitude of the pressure fluctuations ...

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  • Influence of orifice geometry on atomization ...

    2020-9-16 · Pressure swirl nozzle is widely adopted in various kinds of power equipment such as rocket engine, aircraft engine and gas turbine due to its simple structure, good atomization performance, and low cost. 1 Sauter mean diameter (SMD), droplet velocity and spray cone angle are the key parameters of the pressure swirl nozzle which reflects the quality of droplet generation, transport and ...

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  • Influence of Process Parameters and Geometry of the ...

    Influence of the process parameters and geometry of the spraying nozzle on the properties of titanium deposits obtained in wire arc spraying. Wire arc spraying is a process in which through minor modifications of the spray parameters, they can have a major impact on the coatings properties. In this paper there is presented a study on the influence of process parameters and fluid dynamics of ...

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  • Influence of Nozzle Geometry on the Noise of High-Speed ...

    2012-5-17 · American Institute of Aeronautics and Astronautics 12700 Sunrise Valley Drive, Suite 200 Reston, VA 20191-5807 703.264.7500

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  • Performance Study of Nozzle Geometry on Heat Transfer ...

    2012-8-2 · Reynold's number of jet, nozzle to plate spacing, the presence of a confining wall, the ambient air temperature relative to the jet temperature, and jet diameter [2, 3]. The geometry of the nozzle has considerable effect on the heat transfer between the impinging jet and the plate. The nozzle geometry parameters; orifice shape

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  • Research on geometrical parameters effect of fan nozzle ...

    jet nozzle, fan-jet nozzle, a cavitating jet nozzle and a resonating jet nozzle. They conducted some cleaning and erosion experiments to investigate the performance of them in jet coverage, which were based on the same input. By taking the scanning electron microscopy pictures of the water jet, he draws a conclusion that the fan nozzle was ...

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  • Influences of nozzle flow and nozzle geometry on the shape ...

    2003-2-1 · Influences of nozzle flow and nozzle geometry on the shape and size of an air core in a hollow cone swirl nozzle M R Halder, S K Dash, and S K Som Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 2003 217 : 2 , 207-217

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  • Numerical Investigation of Nozzle Jet Flow in a Pelton ...

    The characterization of flow through Pelton hydro turbines allows the optimization of their operation and maximization of energy performance. The flow in the injector of Pelton turbines and in the free jet area (the area from the injector outlet surface to the runner bucket inlet surface) is influenced by several parameters: the geometry of injector components (nozzle and injector spear), the ...

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  • Performance Study of Nozzle Geometry on Heat Transfer ...

    2015-5-17 · Check Pages 1 - 6 of Performance Study of Nozzle Geometry on Heat Transfer ... in the flip PDF version. Performance Study of Nozzle Geometry on Heat Transfer ... was published by on 2015-05-17. Find more similar flip PDFs like Performance Study of Nozzle Geometry on Heat Transfer .... Download Performance Study of Nozzle Geometry on Heat Transfer ...

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  • PAPER OPEN ACCESS Investigating the influence of the

    2019-10-10 · Investigating the influence of the jet from three nozzle and spear design configurations on Pelton runner performance by numerical simulation To cite this article: S Petley et al 2019 IOP Conf. Ser.: Earth Environ. Sci. 240 022004 View the article online for updates and enhancements.

    Get Price
  • Injector Nozzle Hole Parameters and their Influence on ...

    2009-2-9 · Injector Nozzle Hole Parameters and their Influence on Real DI Diesel Performance Mikael Lindström Licentiate thesis Academic thesis, which with the approval of Kungliga Tekniska Högskolan, will be presented for public review in fulfillment of the requirements for a Licentiate of Engineering in Machine Design.

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  • Selecting the Best Nozzle for the Job

    Although nozzles are some of the least expensive components of a sprayer, they hold a high value in their ability to influence sprayer performance. Nozzles meter the amount of liquid sprayed per unit area, controlling application rate, as well as variability of spray over the width of the sprayer boom. Nozzles also influence …

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  • THE EFFECT OF SECOND THROAT GEOMETRY ON THE

    2018-11-8 · nozzle in combination with six, second throat configura­ tions. Unheated air was used for all tests. The starting and operating pressure ratios were im­ proved by the presence of a second throat. Second throat contraction ratio and length of minimum area had the greatest influence on the starting and operating pressure ratios.

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  • Influence of gas-injector geometry on atomization ...

    Gas injectors with of different geometries and injector orifice diameters were used to spray water into air at normal atmospheric pressure and temperature to investigate the effect of gas-injector geometry on spray characteristics. It is found that, over the range of diameters from 0.8 to 2.4 mm, the injector orifice size has little effect on atomization quality.

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  • Experimental investigations of the effect of nozzle ...

    The paper deals with experimental investigations of a two-phase water-air ejector. The aim of research is to find out the influence of the ejector geometry on its performance. Particuler attention is paid to the influence of the nozzle geometry on the gas suction rate and the ejector efficiency. Słowa kluczowe.

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  • Effects of nozzle geometry on the characteristics of an ...

    2016-11-1 · The effects of nozzle geometry on the liquid spray penetration have already been discussed in detail in the previous report [26] and are therefore only briefly summarized here: Nozzle N3 (with a k-factor of 2) produced sprays with shorter liquid phase penetration than nozzle N1 due to higher air entrainment and a lower mass flow rate.

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  • Spray cone angle prediction model considering nozzle

    nozzles and diesel fuel (DIN EN 590). The first nozzle is a cylindrical one, the other two are conical (conicity factor 2.7 and 5.7). Unexpectedly, the nozzle with the highest conicity factor exhibits the largest cone angle. The other two nozzles have nearly a similar value of the angle despite the different geometry.

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  • Waterjet University - Precision and Quality

    2021-8-11 · Effect of nozzle height. For best cut quality, an optimum distance between the nozzle and the work piece should be maintained. Typically, between 0.0625' and 0.125' (1.5 – 3.0 mm) is the optimum height for abrasive waterjet cutting. As the distance increases above 0.125', rounding on the top edge of the cut will result.

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  • Influence of injector geometry on particle trajectories ...

    1998-11-1 · Influence of injector geometry on particle trajectories: Analysis of particle dynamics in the injector and plasma jet

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  • Time-dependent calculation of the velocity of a yarn ...

    In air-jet weaving looms the yarn is initially accelerated by the main nozzle. To obtain a high yarn velocity a high air velocity is required which results in complex flow patterns. Consequently, predicting the influence of a change in geometry or inlet pressure on the yarn velocity is not straightforward. In this research a fast time-dependent fluid-structure interaction framework is used to ...

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  • Fuel Injection: Breaking Up is Hard to Do - Ansys

    2020-11-11 · The performance of a fuel injection nozzle in breaking up the liquid fuel into spray droplets and the fuel–air mixing in the engine cylinder have a major impact on fuel economy and emissions. Both primary and secondary breakup phenomena occur simultaneously in the spray formation process. The primary breakup refers to the liquid jet ...

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  • QUALITY MEASUREMENT: Why Air Gaging Still Matters

    2006-4-18 · After measuring holes for 90 years, air gages remain a powerful metrology tool. Air gages use compressed air to measure changes in pressure or flow rates. Such tests can determine attributes and measure distances between precision orifices and the workpiece. Air gaging offers sufficient magnification and reliability to measure small tolerances.

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  • Experimental Analysis on the Influence of Nozzle Geometry ...

    2015-10-12 · Understanding and controlling mixing and combustion processes is fundamental in order to face the challenges set by the ever more demanding pollutant regulations and fuel consumption standards of direct injection diesel engines. The fundamentals of these processes haven been long studied by the diesel spray community from both experimental and numerical perspectives.

    Get Price
  • Effect of nozzle and combustion chamber geometry on the ...

    In the first phase of the work, injector nozzle (3, 4 and 5 hole injector nozzle, each having 0.2, 0.25 and 0.3 mm hole diameter and injection pressure (varied from 210 to 240 bar in steps of 10 bar) was optimized. Subsequently in the next phase of the work, combustion chamber for optimum performance was investigated.

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  • (PDF) Impact of Process Parameters and Nozzle Design on ...

    Figure 1 . 1 :11Process Flow of Air-Jet Texturing (fundamentals of air-jet texturing- Figure 2 . 121Taslan IX jet nozzle with axial air flow[17] Dissatisfied with the poor performance of the Taslan IX nozzle, Du Pont decided to develop a new design with improved aerodynamics of the nozzle's inner surfaces.

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  • Influence of injector geometry on particle trajectories ...

    1998-11-1 · Influence of injector geometry on particle trajectories: Analysis of particle dynamics in the injector and plasma jet

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  • Modeling the influence of the nozzle flow on diesel spray ...

    2017-3-15 · Modeling the influence of the nozzle flow on diesel spray atomization under high pressure injection conditions J. O.Soriano1*, M. Sommerfeld2, A. Burkhardt1and U. Leuteritz1 1Siemens VDO Automotive, Regensburg, Germany. 2Faculty ofEngineering Science, Martin Luther University Halle-Wittenberg, Halle, Germany. Abstract This paper describes a further development of a cavitation …

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  • (PDF) INFLUENCE OF THE NUMBER OF NOZZLE HOLES ON

    The objective of this paper is to present the influence of the number of nozzle holes on the unburned fuel in four stroke direct injection diesel engine using computational simulation. The four-cylinder direct injection diesel engine model is

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  • Recent Advances in High-Flux, Two-Phase Thermal

    The first is jet formation at the nozzle itself, including the influence of shape, size, and geometry of the nozzle. As the jet emerges from the nozzle, it thickens due to due to resistance from, and entrainment of, surrounding liquid as shown in Fig. 5(a). Jet thickening influences both the size of the impingement zone and spatial variation of ...

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  • The Influence of Shroud and Cavity Geometry on Turbine ...

    2009-3-10 · Rosic, B, Denton, JD, Curtis, EM, & Peterson, AT. 'The Influence of Shroud and Cavity Geometry on Turbine Performance — An Experimental and Computational Study: Part II — Exit Cavity Geometry.' Proceedings of the ASME Turbo Expo 2007: Power for Land, Sea, and Air. Volume 6: Turbo Expo 2007, Parts A and B. Montreal, Canada.

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  • TECHNICAL GUIDE - Qenos

    2016-4-12 · The Air Gap The air gap, or draw distance, between the die lips and the nip to chill roll contact point is one of the most important areas in terms of the polymer’s coating performance. In the air gap, some of the properties of the laminate are most affected by extrusion conditions. It …

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  • SciELO - Brasil - Analysis of the influence of sparkout ...

    An analysis of Fig. 3 indicates that the use of MQL method leads to higher intensity forces than those obtained through other lubrication and cooling methods. This can be explained, in part, by the lack of abundant fluid at the workpiece-tool interface, which would minimize the tribological effects and facilitate the removal of material.

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  • Experimental investigations of the effect of nozzle ...

    The paper deals with experimental investigations of a two-phase water-air ejector. The aim of research is to find out the influence of the ejector geometry on its performance. Particuler attention is paid to the influence of the nozzle geometry on the gas suction rate and the ejector efficiency. Słowa kluczowe.

    Get Price
  • THE EFFECT OF SECOND THROAT GEOMETRY ON THE

    2018-11-8 · nozzle in combination with six, second throat configura­ tions. Unheated air was used for all tests. The starting and operating pressure ratios were im­ proved by the presence of a second throat. Second throat contraction ratio and length of minimum area had the greatest influence on the starting and operating pressure ratios.

    Get Price
  • Effects of axisymmetric sonic nozzle geometry on Mach disk ...

    2012-5-17 · Influence of nozzle geometry on the near-field structure of a highly underexpanded sonic jet Journal of Fluids and Structures, Vol. 24, No. 2 Hysteresis Phenomena of Mach Disk in Under-expanded Jet with Condensation

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  • Nozzles - NASA

    2021-5-13 · The nozzle sits downstream of the power turbine. A nozzle is a relatively simple device, just a specially shaped tube through which hot gases flow. However, the mathematics which describe the operation of the nozzle takes some careful thought. As shown above, nozzles come in a variety of shapes and sizes depending on the mission of the aircraft.

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  • Experimental and numerical analysis of the influence of ...

    influence of the nozzle-to-plate distance variable on heat transfer performance of jet impingement systems, this work aims to provide answers to the industry, scientifically proved. equation, 2. Numerical model of a jet impingement system 2.1 Physical domain and boundary conditions

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  • Structural optimization of the main nozzle in an air-jet ...

    2017-3-31 · Due to having more complicated inner structural features and obvious influence on the air-jet performance arising from the acceleration tube, the structural optimization of the main nozzle for an air-jet loom is still a difficult problem. Naturally, traditional design method for the nozzle will still prolong the time of type approval and increase the design cost.

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  • Design of a Double-Nozzle Air Spray Gun and Numerical ...

    2020-5-14 · double-nozzle air spray gun is numerically studied by changing the L and values. The influence of the spray gun geometry on coating thickness distribution is also analyzed. 2. Computational Model 2.1. Geometry of the Double-Bozzle Air Spray Gun The geometry of the air cap of the double-nozzle air spray gun proposed in this paper is shown

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  • Fuel Injection: Breaking Up is Hard to Do - Ansys

    2020-11-11 · The performance of a fuel injection nozzle in breaking up the liquid fuel into spray droplets and the fuel–air mixing in the engine cylinder have a major impact on fuel economy and emissions. Both primary and secondary breakup phenomena occur simultaneously in the spray formation process. The primary breakup refers to the liquid jet ...

    Get Price
  • Waterjet University - Precision and Quality

    2021-8-11 · Effect of nozzle height. For best cut quality, an optimum distance between the nozzle and the work piece should be maintained. Typically, between 0.0625' and 0.125' (1.5 – 3.0 mm) is the optimum height for abrasive waterjet cutting. As the distance increases above 0.125', rounding on the top edge of the cut will result.

    Get Price
  • A USER’S GUIDE TO SPRAY NOZZLES - TeeJet

    2020-4-6 · spray nozzles for your application and that they are in good working order. If you think there is a nozzle that may better meet your needs, or you suspect that your nozzles are worn, do not hesitate to replace them. The cost of replacing nozzles is minor compared to the effects of poor spraying. In fact, you’ll recoup the cost

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