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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance

    '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 the performance and emission ...

    2020-4-22 · The air-jet texturing process is widely known for its ability to produce spun-like synthetic continuous filament yarns. Structural modification is achieved by contact of the continuous feed yarn with a supersonic air stream delivered by a nozzle. The details of the flow patterns are influenced by the geometry of the nozzle. This

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  • EFFECT OF NOZZLE GEOMETRY ON THE EFFICIENCY OF

    Effect of nozzle geometry on pressure drop and heat transfer in submerged jet arrays ... Download Free PDF. ... Influence of the shape of the nozzle on local heat transfer distribution between smooth flat surface and impinging air jet. By Vadiraj Katti. Single-Phase Microscale Jet …

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  • Experimental Study of Influence of Different Nozzle ...

    2018-8-29 · geometry ( modified nozzle geometry). Blends like B20, B40, B60, B80, B100 and standard diesel were used in engine and studied the performance and emission characteristics without altering the compression ratio of the engine. The experimental results showed that higher Brake thermal efficiency (BTE) for baseline nozzle geometry up to B40 POME ...

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  • Effect of Abrasive on Water Jet Nozzle

    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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  • Study on Heat Transfer during Rectangular Slot Air Jet ...

    Effect of nozzle geometry on pressure drop and heat transfer in submerged jet arrays ... Download Free PDF. ... Influence of the shape of the nozzle on local heat transfer distribution between smooth flat surface and impinging air jet. By Vadiraj Katti. Single-Phase Microscale Jet …

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  • Effect of Jet Shape on Flow and Torque Characteristics of ...

    Request PDF | Effect of nozzle geometry on heat transfer characteristics from a single circular air jet | The paper reports results on the effects of nozzle geometry on local and average heat ...

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  • Experimental Analysis of Temperature Distribution Along C ...

    2019-2-1 · Nozzle geometry does have a significant impact of nozzle performance. Effect of single-phase air flow through a nozzle revealed the effect of different nozzle parameters on nozzle performance. A lower diverging angle and no elongated throat gave the best critical pressure ratio and a low pressure drop.

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  • Ansys Nozzle Jet - cdn.app.jackwills.com

    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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  • Ansys Nozzle Jet - cdn.app.jackwills.com

    For each of these properties, the most efficient nozzle was the one for which the mass flow rate of compressed air was the lowest. 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 ...

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  • Nozzle Wear Parameter in Water jet machining The Review

    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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  • Flow visualization of the jet exiting a chevron nozzle

    2021-8-2 · Ansys Nozzle Jet modeling of mist and fog jet vikash kumar singh chauhan goal working on the fluent modeling of the fog and ... this analysis is totally depends on nozzle geometry and nozzle material is taken same for all cases this ... an effect on the mixing of water air and the abrasives and that the velocity of the wa jet coherence decreases

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  • Effect of linear density of feed yarn filaments and air ...

    2016-7-20 · Department of Textile Technology, Indian Institute of Technology, New Delhi 110 016, India Received 7 August 2014; revised received and accepted 22 September 2014 The influence of yarn feed and process parameters used in the production of air-jet textured yarn on compression and recovery behavior of air-jet textured yarn fabric has been studied.

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  • CHARACTERISTIC STUDY OF NON-CIRCULAR

    2017-10-31 · The geometry of the chevron in terms of petal length and penetration appears to have a strong effect on the jet cross-section. Chevrons CH-1 and CH-1-3 have the same petal length, but surprisingly, an increase in the penetration of the crest from 2% to 6% significantly enhances the bulge through the notches, thereby increasing the perimeter of ...

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  • DESIGN AND CFD ANALYSIS OF CONVERGENT AND

    2011-10-13 · In a turbulent jet flow, it is customary to use an axisymmetric nozzle, as reported in [11, 14, 26] to mention only a few. The conventional axisymmetric nozzles consist of a smooth circular pipe or a contracted circular nozzle, which are characterized by fully developed velocity profiles, and top-hat velocity profiles, respectively.

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  • Characteristics of Turbulent Round Jets in its Potential ...

    the effect of nozzle geometry and injection pressure fluctuation on the in-nozzle flow and jet breakup based on the multi-fluid-les model atomization and sprays, vol.30, 2020, issue 7 Weilong Zhang, Rong Xie, Canxu Liu, Hong Liu, Ming Jia, Xi Xi

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  • Numerical and Experimental Investigations on Jet ...

    2017-9-25 · used nozzle since in using it the propellant can be heated incombustion chamber. In this project we designed a new Tri-nozzle to increase the velocity of fluids flowing through it. It is designed based on basic convergent-Divergent nozzle to have same throat area, length, convergent angle and divergent

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  • Flow visualization of the jet exiting a chevron nozzle

    2013-4-23 · number [6], nozzle geometry and turbulent intensity at the nozzle exit [7,8,9,10,11]. The effect of different nozzle intrusions in the jet was studied by a few researchers [12,13,14]. The effect of Reynolds number in the near-field of turbulent round jet had been studied by using stationary and flying hot-wire anemometer [6].

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  • Heat Transfer Enhancement by Jet Impingement ... - IRD India

    2016-4-1 · incident the high velocity air jet coming from the nozzle on a target surface having dimples of various geometry. It is used for cooling, heating and drying purposes like in hot metal cooling, turbine blades cooling and in cooling electronics equipments etc. This study will investigate the effect of jet impingement on a

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  • Mathematical model of a constructal Coanda effect nozzle

    2021-3-18 · tially huge impact on the field of air transport. The concept comprises a thrust vectoring propulsive nozzle named HOMER (High-speed Orienting Momentum with Enhanced Reversibility), exploit-ing Coanda effect of a dual stream on a curved, convex surface, and a plasma actuator enabling the extension of the vectoring angle range of the nozzle.

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  • STUDY OF DECAY CHARACTERISTICS OF RECTANGULAR

    2018-12-6 · The nozzle exit geometry factors like hydraulic diameter (D h) and shape factor ( ζ) were governed by exit geometry shape. The aspect ratio of characteristic major to mi-nor dimensions was 2:1 for rectangular and elliptical shaped nozzles. The nozzle exit geometry shapes are shown in fig. 3.

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  • Characteristics of Turbulent Round Jets in its Potential ...

    2013-4-23 · number [6], nozzle geometry and turbulent intensity at the nozzle exit [7,8,9,10,11]. The effect of different nozzle intrusions in the jet was studied by a few researchers [12,13,14]. The effect of Reynolds number in the near-field of turbulent round jet had been studied by using stationary and flying hot-wire anemometer [6].

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  • DECAY OF SUPERSONIC RECTANGULAR JET ISSUING FROM

    2020-9-9 · This paper addresses the effect of expansion ramps on the decay characteristics of a controlled supersonic rectangular jet. A Mach 1.8 rectangular jet issuing from a converging-diverging nozzle of aspect ratio 2 and Reynolds number 1.861∙105 is considered as the base model for the study. Two separate nozzle models with ex-

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  • FLUID FLOW AND HEAT TRANSFER OF AN IMPINGING AIR JET

    2007-10-31 · Convective heat transfer to an impinging air jet is known to yield high local and area averaged heat transfer coe–cients. The current research is concerned with the mea-surement of heat transfer to an impinging air jet over a wide range of test parameters. These include Reynolds Numbers, Re, from 10000 to 30000, nozzle to impingement

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  • Corrugated Tabs for Supersonic Jet Control (Keynote Paper)

    2009-6-29 · subsonic or supersonic, is the distance from nozzle exit at which the characteristic decay begins. The centerline pitot pressure decay for the uncontrolled jet, controlled jet with plain tabs and corrugated tabs are given in Fig. 3. At NPR 4, Mach 1.8 jet is overexpanded with overexpansion ratio 2 Ø 2 Ô = 0.696. For this level of expansion ...

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  • NOZZLES - UPM

    2021-1-2 · The classical quasi-one-dimensional Laval nozzle, which has a slender geometry, with a rapidly converging short entrance, a rounded throat, and a long conical exhaust of some 15º half-cone angle (the loss of thrust due to jet divergence is about 1.7%).

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  • A review on nozzle wear in abrasive water jet machining ...

    2017-6-2 · A review on nozzle wear in abrasive water jet machining application H. Syazwani1, G. Mebrahitom, A. Azmir 1Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia . E-mail :[email protected], [email protected], [email protected] . Abstract.This paper discusses a review on nozzle wear in abrasive water jet …

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