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  • (PDF) Effect of Nozzle Geometry on Air-Jet Texturing ...

    'Effect of Nozzle Geometry on the Flow Charact eris tics of Small W ater Jets', Proceedings of the Institution of Mechanical Engineers, Part C, Journal of M echanical Engineering Science, Vol. 220 ...

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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 · the nozzle geometry: Nozzles 1-9 have nine different values of primary flow length LP, i.e., the distance between air inlet and nozzle exit, ranging from 4 to 16 mm. The reference nozzle is nozzle 5 with a value of LP of 10mm. Nozzles I 0 and 11 have two

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  • (PDF) The effect of nozzle geometry on the flow ...

    Results are presented of a wide-ranging investigation of geometry effects on the flow parameters and jet characteristics of nozzles with diameters between 120 and 170 mu m. Nozzles …

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  • (PDF) Effect of Nozzle Geometry on the Space-Time Emission ...

    2021-7-31 · The effect of small-sized conical reflectors on the screech emission of supersonic underexpanded jets was studied experimentally. The investigation focused on two closely spaced fully-expanded Mac ...

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  • (PDF) Effect of Nozzle Geometry on a Model ...

    PDF | On Apr 10, 2012, Kavous Ariafar published Effect of Nozzle Geometry on a Model Thermocompressor Performance – a Numerical Evaluation | Find, read and cite all the research you need on ...

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  • Effects of geometry on the flow characteristics and ...

    Air-jet texturing is a versatile process for producing a range of synthetic yarns with a spun-like appearance, which are widely used for apparel and furnishing fabrics and industrial textiles.There is no universal nozzle capable of processing any supply yam of any linear density.The role played by nozzle geometry is still not fully understood.The experimental study presented here seeks to ...

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  • (PDF) EFFECT OF NOZZLE GEOMETRY ON EXIT VELOCITY ...

    EFFECT OF NOZZLE GEOMETRY ON EXIT VELOCITY, TEMPRATURE AND PRESSURE FOR COLD SPRAY PROCESS ... Download full-text PDF Download full-text PDF Read ... Comparison is made by selecting different ...

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

    2019-2-1 · 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.

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  • Effect of nozzle geometry on heat transfer characteristics ...

    The paper reports results on the effects of nozzle geometry on local and average heat transfer distribution in unconfined air jet impingement on a flat plate. An infrared thermography camera is used to record the temperature distribution from isotherms on a uniformly heated impingement surface. Experiments have been conducted with variation of ...

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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 · 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 texturing nozzle with a rectangular cross section has been developed.

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  • Effects of Nozzle Geometry on Air Flow Jet and Temperature ...

    2016-3-29 · The aim of the work was to investigate the effect of upstream geometry of the nozzle on the turbulence mixing and temperature distribution in still air large enclosed spaces. Prototype experiments were carried out with the JETs (Jet Environmental Techniques) existing nozzle geometry in a test room.

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  • [PDF] Effect of Nozzle Geometry on the Suction Flow Rate ...

    ABSTRACT Ejector is an equipment devised for making use of the low pressure occurring from the fast fluid injection and it is a transportation equipment which can obtain vacuum using the kinetic energy of the fluid. This ejector system is, nowadays, widely used for construction machinery, heavy equipments, the cooling and ventilation of electronic devices and for the various fluid ...

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  • Effect of nozzle geometry on heat transfer characteristics ...

    Abstract The paper reports results on the effects of nozzle geometry on local and average heat transfer distribution in unconfined air jet impingement on a flat plate. An infrared thermography camera is used to record the temperature distribution from isotherms on a uniformly heated impingement surface. Experiments have been conducted with variation of exit Reynolds number, Re, in the range of ...

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  • [PDF] Effect of Fuel Nozzle Geometry on the Stability of ...

    An experimental assessment of the effect of fuel nozzle geometry on the stability of turbulent, nonpremixed methane flame is presented. The burner consists of a central fuel nozzle surrounded by an annulus of co-airflow. Four nozzles with different geometries having similar exit cross-sectional areas but different internal/orifice geometry (circular, rectangular, square and triangular) were ...

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  • The effect of nozzle geometry on local convective heat ...

    The velocity profile at the jet exit (X/D = 0.1) presents a parabolic shape for the tube and an inverted parabolic shape for the round orifice, while the presence of two shear layers renders the cross-shaped orifice more complex and three-dimensional. Thermal results also show that a round orifice on the hemisphere causes higher heat transfer ...

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  • The effect of nozzle geometry on turbulent impinging air ...

    But in chamfered outlet and chamfered inlet models, chamfer angle is defined as 15°, 30° and 45°. Also, three different jet to impingement surface distance (H/D= 2.6, 4.0, 6.0) effect is investigated with the other parameters which are mentioned before. The flow is assumed as incompressible, two dimensional and turbulent air flow.

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

    2016-4-13 · Nozzle geometry has obvious effect on the jet flow of high temperature and pressure produced by laser ablation, but less attention has been paid on it. Confined structure no matter cylindrical geometries [ 11 , 12 ] or wedge nozzle [ 13 ] can manipulate the momentum coupling coefficient, but it is still far from completely understood.

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  • Effects of nozzle interfairing modifications on ...

    A wind-tunnel investigation has been made to determine the effects of nozzle interfairing modifications on the longitudinal aerodynamic characteristics of a twin-jet, variable-wing-sweep fighter model. The model was tested in the Langley 16-foot transonic tunnel at Mach numbers of 0.6 to 1.3 and angles of attack from about minus 2 deg to 6 deg and in the Langley 4-foot supersonic presure ...

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  • Effects of geometry on the flow characteristics and ...

    Air-jet texturing is a versatile process for producing a range of synthetic yarns with a spun-like appearance, which are widely used for apparel and furnishing fabrics and industrial textiles.There is no universal nozzle capable of processing any supply yam of any linear density.The role played by nozzle geometry is still not fully understood.The experimental study presented here seeks to ...

    Get Price
  • Effect of Nozzle Geometry on the Space-Time Emission of ...

    2021-7-28 · The effect of small-sized conical reflectors on the screech emission of supersonic underexpanded jets was studied experimentally. The investigation focused on two closely spaced fully-expanded Mach numbers, 1.32 and 1.34, and included reflectors with four cone half angles, from 90 degrees to 60 degrees.

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  • EFFECT OF NOZZLE GEOMETRY ON THE EFFICIENCY OF

    2016-7-19 · a stepped nozzle (Figure 1), a straight pipe, a converging-diverging nozzle (Figure 3) and an energy-efficient nozzle (Figure 4). The energy efficient nozzle is a combination of a stepped nozzle and a diverging part connected at the back. This geometry permits the surrounding air to be entrained. NOMENCLATURE

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  • (PDF) Effect of Nozzle Geometry on Flame Characteristics ...

    23rdNational Conference on I. C. Engine and Combustion (NCICEC 2013) SVNIT, Surat, India 13-16, December 2013 Effect of Nozzle Geometry on Flame Characteristics of a Swirl Stabilized Hydrogen Combustor D. P. Mishra and R. Khatry Department of Aerospace Engineering Indian Institute of Technology Kanpur Abstract This paper presents an experimental study on the performance …

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  • Effect of Nozzle Geometry on Jet Noise Reduction Using

    2019-8-2 · Effect of Nozzle Geometry on Jet Noise Reduction Using Fan Flow Deflectors Dimitri Papamoschou* and Rebecca S. Shupe† University of California, Irvine, Irvine, CA, 92697-3975 We examine the effect of baseline nozzle shape on the ability of fan flow deflectors to reduce downward-emitted turbulent mixing noise of coaxial jets simulating the exhaust

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  • Effect of axisymmetric sonic nozzle geometry on ...

    The effect of nozzle geometry on sonic line and characteristics of supersonic air jet was studied. Computational fluid dynamics was applied in this study. The axisymmetric nozzle geometries investigated were two different contour converging nozzles, two different conically converging sharp-edged nozzles and a sharp-edged orifice. The results show that the supersonic jet structure, sonic line ...

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

    2012-5-17 · Effect of axisymmetric sonic nozzle geometry on characteristics of supersonic air jet Journal of Thermal Science, Vol. 13, No. 2 An experimental study of underexpanded sonic, coaxial, swirl jets

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  • Effect of nozzle inlet geometry on underexpanded ...

    A vena-contracta effect has been noted in the jet flow field in the cases of nozzles with sharp inlet geometries. The effect of the inlet geometry is to delay the onset of the typical barrel shock structure seen in underexpanded jets. The distortion of the jet boundary results in a smaller Mach stem for the same pressure ratio and exit Mach number.

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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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  • Air Jet Weaving

    2015-6-18 · Air Jet Weaving - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. This paper talked about air jet weaving machine. Some of the pneumatic states are shown in this article.

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  • The Effect of Nozzle Geometry on Pressure Drop and Heat ...

    Whelan, BP, & Robinson, AJ. 'The Effect of Nozzle Geometry on Pressure Drop and Heat Transfer to Free Surface Liquid Jet Arrays.' Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference.

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  • Effect of axisymmetric sonic nozzle geometry on ...

    The effect of nozzle geometry on sonic line and characteristics of supersonic air jet was studied. Computational fluid dynamics was applied in this study. The axisymmetric nozzle geometries investigated were two different contour converging nozzles, two different conically converging sharp-edged nozzles and a sharp-edged orifice. The results show that the supersonic jet structure, sonic line ...

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  • Effect of Nozzle Geometry on Characteristics of Submerged ...

    2015-4-30 · The nozzle features of pipe discharging systems have a great influence on exhaust noise, especially on the noise produced by gas-liquid two-phase flow outside the nozzle. To study the influence of nozzle geometry on underwater jet noises, a theoretical study was performed on the critical weber number at which the jet flow field morphology changes.

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  • (PDF) Effect of Jet Nozzle-Lip Momentum Loss on ...

    Effects of the nozzle-lip thickness B. Adjustment of C μ for different nozzle-lip thicknessesIn the following, results of two additional cases (D and E) are presented to show that the effect of the nozzle-lip thickness on the jet velocity over the Coanda surface (and thus on the performance of the airfoil) is explained mostly by the loss of ...

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  • (PDF) Effect of non-circular nozzle shape on impingement ...

    Download Free PDF. Effect of non-circular nozzle shape on impingement cooling characteristics ... This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper. Effect of non-circular nozzle shape on impingement cooling characteristics. Download. Related Papers. ON THE THERMAL BEHAVIOUR OF A TURBULENT IMPINGING JET ...

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  • The effects of nozzle geometry on waterjet breakup at high ...

    2003-9-2 · Note that, as mentioned by Lin and Reitz (), the above formulations do not take into account the effect of nozzle geometry.Recent studies by Hiroyasu (Hiroyasu et al. 1991; Hiroyasu 2000), Arai et al. and Tamaki et al. have shown that the nozzle geometry may have a significant impact on the characteristics of such flows.At a fixed injection pressure, waterjets can have a long intact length ...

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  • (PDF) Effect of modified expansion pipe nozzle on heat ...

    The aim of this study is to experimentally and numerically investigate the flow and heat transfer characteristics of impinging jet from expansion pipe with some modifications. The expansion pipe without air entrainment hole, with 4 and 8 air

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  • (PDF) Effect of nozzle arrangement on Venturi scrubber ...

    Ind. Eng. Chem. Res. 1999, 38, 4889-4900 4889 Effect of Nozzle Arrangement on Venturi Scrubber Performance Nochur V. Ananthanarayanan and Shekar Viswanathan1 Department of Chemical and Environmental Engineering, National University of Singapore, 10, Kent Ridge Crescent, Singapore 119260, Singapore The effect of nozzle arrangement on flux distribution is studied in a rectangular, …

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  • The effect of air swirl profile on the instability of a ...

    breakup process of the liquid jet is a ected by a large number of factors, including flow conditions, fluid properties and nozzle geometry (Lin & Reitz 1998). The various forces involved in the breakup process are inertial, surface tension, aerodynamic, centrifugal, and viscous. Some of the forces resist the disintegration process while ...

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  • Mixing Process in a Lobed Jet Flow - Iowa State University

    2004-7-27 · Mixing Process in a Lobed Jet Flow HuiHu,¤Tetsuo Saga,†Toshio Kobayashi,‡and Nobuyuki Taniguchi§ University of Tokyo, Tokyo 153-8505, Japan A high-resolution stereoscopic particle image velocimetry(PIV)system was used to conduct three-dimensional measurement of an air jet exhausted from a lobed nozzle.

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  • Effect of Nozzle Geometry on Jet Noise Reduction Using

    2012-6-22 · Effect of Nozzle Geometry on Jet Noise Reduction Using Fan Flow Deflectors Dimitri Papamoschou* and Rebecca S. Shupe† University of California, Irvine, Irvine, CA, 92697-3975 We examine the effect of baseline nozzle shape on the ability of fan flow deflectors to reduce downward-emitted turbulent mixing noise of coaxial jets simulating the exhaust

    Get Price
  • ISTANBUL TECHNICAL UNIVERSITY GRADUATE SCHOOL

    2017-6-15 · EFFECT OF NOZZLE EXIT GEOMETRY ON THE JET FLOW SUMMARY Nozzles have a widespread usage in the industrial and daily life. For example, combustion chambers, air conditioning systems, jet engine exhausts are nozzles from which high speed jet flow issues. There are problems with the jet flow as well, such as noise which is a source of noise ...

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  • Effect of nozzle geometry on the efficiency of compressed ...

    All nozzles showed comparable mass flow rates for the same impact force and the difference was in the order of 5% better than a straight pipe geometry. Only the energy saving nozzle used around 10% less mass flow and is the best solution to reduce compressed air consumption without losing performance. en_ZA. dc.description.librarian.

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  • (PDF) Effects of Nozzle Geometry on Cavitation in Nozzles ...

    Effects of nozzle geometry on cavitation and liquid jet Figures 3 (a) and (b) show cavitation and a liquid jet in the 2D nozzle of 4.21 mm in width WN and those in the half-scale nozzle, respectively. Figures 3 (c) and (d) are those in the 2D nozzles with smaller Cu.

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  • INFLUENCE OF HYDRODYNAMIC CONDITIONS AND

    2013-11-15 · sure, nozzle diameter and geometry, nozzle mounting (for convergent/divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the in-fluence of visualization system position was also studied. All the parameters have been found to be of strong influence on the jet appearance and performance. Both

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  • Effect of Geometry of Pressure-Swirl Duplex Nozzle and ALR ...

    2019-11-20 · Modern engines employ different geometrically designed nozzles. It is crucial to characterize the effect of the internal geometry of the nozzle and ALR on atomization characteristics. In this study, the effects of geometric parameters of the pressure-swirl duplex nozzle and ALR on the spray characteristics of Jet A-1 fuel were investigated.

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  • (PDF) Effect of primary jet geometry on ejector ...

    Effect of primary jet geometry on ejector performance: A cold-flow investigation. International Journal of Heat and Fluid Flow, 2011. K. Kontis. H. Zare-Behtash. K. Kontis. H. Zare-Behtash. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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  • (PDF) Effect of Jet Nozzle-Lip Momentum Loss on ...

    Effects of the nozzle-lip thickness B. Adjustment of C μ for different nozzle-lip thicknessesIn the following, results of two additional cases (D and E) are presented to show that the effect of the nozzle-lip thickness on the jet velocity over the Coanda surface (and thus on the performance of the airfoil) is explained mostly by the loss of ...

    Get Price
  • CFD-Based Study of Nozzle Section Geometry Effects on the ...

    CFD simulation and analysis of the internal flow field of the annular multi-nozzle jet pump are carried out to study the effects of nozzle section geometries on performance of the pump based on the finite volume method and realizable k-ε model. The results show that the square nozzle peak efficiency is 3% higher than that of the circular nozzle and 4.1% higher than that of the triangular nozzle.

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  • Effect of Geometry on Exit Temperature from Serpentine ...

    2015-1-3 · American Institute of Aeronautics and Astronautics 12700 Sunrise Valley Drive, Suite 200 Reston, VA 20191-5807 703.264.7500

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  • The effect of nozzle geometry on the flow characteristics ...

    2006-12-1 · Results are presented of a wide-ranging investigation of geometry effects on the flow parameters and jet characteristics of nozzles with diameters between 120 and 170 μm. Nozzles with circular cross-section and conical, cone-capillary and capillary axial designs were investigated.

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  • Effect of Burner Geometry on the Blowout Limits of Jet ...

    1996-6-1 · The effects of changes in the jet nozzle geometry, i.e., nozzle shape and lip thickness, on the blowout limits of jet diffusion flames in a co-flowing air stream were experimentally investigated for a range of co-flow air stream velocities. Circular and elongated nozzles of …

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  • Nozzle geometry effects on supersonic jet interaction ...

    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. Interaction of Parallel Sonic Twin Jet. Vinoth B R and. Rathakrishnan Ethirajan. 15 June 2012. Nozzle Orientation Effects and Nonlinear Interactions Between Twin Jets of Complex Geometry.

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  • Effect of design and operational parameters on jet pump ...

    2006-9-29 · 9- The nozzle-to-throat spacing to nozzle diameter ratio “X” was adjusted to 1.25 and steps (4) to (6) were repeated with different motive fluid pressure varying from 1.5 to 3 bar, in order to investigate the effect the nozzle-to-throat spacing to nozzle diameter ratio “X” on the jet pump performance.

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  • EVALUATION OF BOATTAIL GEOMETRY AND EXHAUST

    2015-12-31 · number range. Configuration variables included nozzle boattail geometry and internal nozzle geometry. A cold jet and hot jet test technique was used to simulate and duplicate, respectively, the nozzle exhaust flow. High-pressure air served as the simulation fluid, and an air/ethylene combustor provided the means for duplicating the exhaust flow ...

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  • Experimental examination of nozzle geometry on water jet ...

    2011-9-2 · The effect of a nozzle’s internal geometry was studied experimentally to determine the breakup of the emitted water jet when it was injected perpendicularly into a quiescent atmosphere or a subsonic air crossflow. The nozzle’s diameter, nominal surface roughness, length-to-diameter ratio and contraction angle were varied, together with the ...

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  • Effect of Geometry on Exit Temperature from Serpentine ...

    2015-1-3 · American Institute of Aeronautics and Astronautics 12700 Sunrise Valley Drive, Suite 200 Reston, VA 20191-5807 703.264.7500

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  • The effect of nozzle-exit-channel shape on resultant fiber ...

    2017-1-16 · The effect of nozzle-exit-channel shape on the resultant fiber diameter was investigated by machining several nozzles with different exit-channel shapes. The cross-sectional area for C1, Sqr, Tri, and R1 nozzles was 38 000 ± 500 μm 2. Figure 4 shows the average diameters of produced fibers using C1, Sqr, Tri, and R1 nozzles at 100 °C to 140 ...

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  • Air Jet Weaving

    2015-6-18 · Air Jet Weaving - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. This paper talked about air jet weaving machine. Some of the pneumatic states are shown in this article.

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  • NUMERICAL SIMULATION AND PARAMETRIC STUDY OF

    2003-1-10 · distance from the nozzle exit increase with increased jet Mach number. Sarohia and Back6 deduced from their experimental observations that the placement of the tube inlet relative to free-jet shock determines whether the device operates in the jet regurgitant or screech mode (aft and fore). For the computed Hartmann resonance tube geometry the ...

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  • Effect of Nozzle Geometry on Heat Transfer in Jet Impingement

    Effect of Nozzle Geometry on Heat Transfer in Jet Impingement Download jet impingement has one of the highest modes of heat transfer. its performance characteristics have been researched for a long time and numerous correlations has been developed for different situations.

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  • Effect Of Nozzle Exit Geometry On The Jet Flow - CORE

    Through this study, effect of the exit geometry of a nozzle on the flow issuing from it was investigated. Firstly nozzles were designed in the light of past work. Different geometrical aspects were tried to be included in the work.

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  • Numerical Investigation of Nozzle-Geometry Variations and ...

    2018-4-3 · In the present work numerical simulations were carried out investigating the effect of fuel type, nozzle-geometry variations and back-pressure changes on high-pressure gas injections under application-relevant conditions. Methane, hydrogen and nitrogen with …

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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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  • Effect of Nozzle Internal Contour on Jet Aeroacoustics - K ...

    2004-4-1 · A frequent problem that confronts designers of jet rigs and nozzles used for aeroacoustic testing is the unknown effect of the state of the flow upstream of the nozzle exit on aeroacoustic performance. Though the effect of the inflow conditions on flow development has been studied extensively, there is limited information on their effect on noise.

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  • Effect of nozzle-exit conditions on the near-field ...

    2017-11-16 · Several tapered- and sharp-edge nozzles with different exit diameters were used to investigate their effect on the near-field characteristics of a liquid jet injected transversely into a subsonic uniform cross airflow including a jet’s structure, column …

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  • CFD-Based Study of Nozzle Section Geometry Effects on the ...

    CFD simulation and analysis of the internal flow field of the annular multi-nozzle jet pump are carried out to study the effects of nozzle section geometries on performance of the pump based on the finite volume method and realizable k-ε model. The results show that the square nozzle peak efficiency is 3% higher than that of the circular nozzle and 4.1% higher than that of the triangular nozzle.

    Get Price
  • 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 I A -K G CONTINUOUS H -D G

    2014-6-18 · iv impinging jet subjected to a wide range of gas wiping parameters which include the main jet Reynolds number (Rem), the auxiliary jet Reynolds number (Re a), and the plate-to- nozzle ratio (z/d).A comparison between the measured results obtained for the two

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  • Theoretical range and trajectory of a water jet

    2015-11-13 · jet shot at a target from a distance, as is the typical case in a fire. Height and range here refer to the maximum extent of the trajectory. The typical dynamics of these jets is as follows. Water is forced through a nozzle by a pressure differential. The flow be-comes a free jet, after which it generally begins to break apart into

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  • Effect of nozzle geometry on the efficiency of compressed ...

    All nozzles showed comparable mass flow rates for the same impact force and the difference was in the order of 5% better than a straight pipe geometry. Only the energy saving nozzle used around 10% less mass flow and is the best solution to reduce compressed air consumption without losing performance. en_ZA. dc.description.librarian.

    Get Price
  • 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.

    Get Price
  • The Effect of Nozzle Diameter on Jet Impact for a Tricone ...

    Flow rate, fluid velocity, jet nozzle geometry and drilling fluid properties are well recognized as factors that affect the penetration rates of tricone bits. Parameters such as jet impact force, hydraulic horsepower, jet velocity, and jet Reynolds number have been used in attempts to quantify the effect …

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  • Effect of nozzle-exit conditions on the near-field ...

    2017-11-16 · Several tapered- and sharp-edge nozzles with different exit diameters were used to investigate their effect on the near-field characteristics of a liquid jet injected transversely into a subsonic uniform cross airflow including a jet’s structure, column …

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  • EXPERIMENTAL I A -K G CONTINUOUS H -D G

    2014-6-18 · iv impinging jet subjected to a wide range of gas wiping parameters which include the main jet Reynolds number (Rem), the auxiliary jet Reynolds number (Re a), and the plate-to- nozzle ratio (z/d).A comparison between the measured results obtained for the two

    Get Price
  • Air Jet Weaving

    2015-6-18 · Air Jet Weaving - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. This paper talked about air jet weaving machine. Some of the pneumatic states are shown in this article.

    Get Price
  • Effects of Orifice Geometry on Gelled Propellants Sprayed ...

    2014-7-1 · Journal of Air Transportation; Journal of Aircraft; Journal of Guidance, Control, and Dynamics ... Effects of Orifice Geometry on Gelled Propellants Sprayed from Impinging-Jet Injectors. ... “ The Effect of Jet Velocity Profile on the Characteristics of Thickness and Velocity of the Liquid Sheet Formed by Two Impinging Jets,” Physics of ...

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  • International J of Engine Research 2019, Vol. 20(1) 105 ...

    2018-9-27 · The effects of fuel–air mixing and injector dribble on diesel unburned hydrocarbon emissions Chad P Koci, Russ P Fitzgerald, Vagelis Ikonomou and Kaimei Sun ... conducted to illuminate nozzle geometry, injection and cylinder boundary condition influences on the dribble event. ... Dribble measurements were made after the EOI in this work at an ...

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  • EFFECT OF WATER TEMPERATURE ON EVAPORATION ...

    2015-10-6 · - 36 - research examines the effect of increased water temperatures on a mist spray and its cooling effect. 2. THEORY An increase in an evaporative mist cooling system water supply temperature above the ambient air temperature is

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  • Combined Effects of Wakes and Jet Pulsing on Film Cooling

    2021-7-19 · ing ratios B of 0.50 and 1.0 with jet pulsing and wake Strouhal numbers of 0.15, 0.30, and 0.60. Wake timing was varied with respect to the pulsing. Temperature measurements were made using an infrared camera, thermocouples, and constant current (cold wire) anemometry. The local film cooling effectiveness and heat transfer coefficient were de-

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