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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

    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

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

    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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  • Experimental Study of Influence of Different Nozzle ...

    2009-8-24 · 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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  • Heat Transfer Enhancement by Jet Impingement ... - IRD

    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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  • Effect of Air Ratio on Unsteady Partially Premixed Flames

    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 Abrasive on Water Jet Nozzle

    2020-1-8 · Effect of Air Ratio on Unsteady Partially Premixed Flames Ashokraj R, Sundararajan T, Srinivasan K Indian Institute of Technology, Madras Chennai, Tamil Nadu, India [email protected]; [email protected]; [email protected] Abstract– The burning characteristics of unsteady partially premixed flames have been investigated in this paper.

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  • Mathematical Model of a Constructal Coanda Effect Nozzle

    2017-6-12 · jet characteristics, abrasive size and nozzle geometry, etc. The uncontrolled nozzle wear can affect the effectiveness and surface finish obtained through the AWJ machining process. In the present work, the effect of geometrical parameters of single step nozzle and abrasive size on skin friction coefficient at the wall of nozzle due to wall shear

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

    2017-9-18 · 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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  • Effect of Jet Shape on Flow and Torque Characteristics of ...

    2017-4-25 · Finally, the pressurized air goes through the rectangular slot nozzle and generates the slot jet. The flow rates were measured directly from the rotameter. Two dimensional slot nozzle with 3 mm width and an aspect ratio of 21:1 to produce uniform velocity profile at its exit is used for the study. According to the hydraulic diameter of the ...

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  • Numerical Simulation of Effect of Lobed Nozzle on ...

    2015-1-31 · penstock. The shape of jet affects the force and torque on the bucket and runner of turbine. The nozzle of circular cross section is commonly used. In this paper attempt has been made to study the effect of four different jet shapes on the flow and torque characteristics of Pelton turbine runner through numerical simulation.

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  • SSRG International Journal of Mechanical Engineering

    Sector-125, Noida, Uttar Pradesh-201303, India Abstract: A numerical study has been conducted to analyze the effect of nozzle exit geometry (lobed nozzle) on temperature mixing

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  • EFFECT OF COLLAR AND BEVEL ANGLE IN MIXING

    2019-1-29 · the subject. The geometry considered is that of a single circular jet impinging orthogonally onto a plane surface for nozzle to plate distance from 1.2 to 16 and calculated local heat transfer coefficient by k Jambunathan, etal [1]. Liquid crystals are used to investigate the effect of …

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  • Heat transfer enhancement by jet impingement on

    2014-12-16 · jet impingement is to 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

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  • NUMERICAL AND EXPERIMENTAL INVETIGATIONS OF

    2020-12-1 · College of Engineering, Trivandrum Thiruvananthapuram, Kerala,695016 India VSSC, ISRO, Thiruvananthapuram,Kerala,695022 India ABSTRACT Effective mixing of two supersonic streams in a short mixing chamber is a major challenge. Active and passive methods are used to enhance the mixing. Nozzle geometry, different nozzle configurations a

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  • Review of Correlations on Jet Impingement Cooling

    2020-4-1 · other arrangements are nozzle geometry of square edge (no chamfered) and with chamfered edge, inclined jet, axially symmetric air jet, elliptic jet arrays. Swirling Jet the impinging jet is forced to swirl when exiting the jet orifice/nozzle, providing a flow commonly known as the swirling jet.

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  • Nozzle Wear Parameter in Water jet machining The Review

    2014-4-1 · A nozzle is required to perform abrasive waterjet machining for material removal with the help of very high velocity of waterjet. The main problem of AWJ machining process is nozzle wear during the process. The wear depends on various parameters such as water jet characteristics, nozzle geometry…

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

    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 STATISTICAL ANALYSIS ON THE

    2021-8-3 · nozzle geometry and size nozzle configuration location of exhaust ports nozzle to target spacing surface motion and operating variables such as cross flow and jet axis velocity complicate the analysis Experimental and Numerical Computational Fluid Dynamics April 29th, 2019 - consists of the nozzle with spear and jet 14 The jet is designed in ...

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

    2016-8-10 · Experimental and statistical analysis […] reduction using Chevron nozzle in supersonic free jet 25 The effect of nozzle pressure ratio and No. of Chevrons on noise level is shown in Fig.2. The results were plotted for three different nozzle pressure ratios(2.5, 3,and 3.5) and No. of chevrons (0, 10, and 14) at the exit of the CD-nozzle.

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  • Flow visualization of the jet exiting a chevron nozzle

    2 天前 · jet nozzle based on ansys fluent amp icem cfd analysis and simulation of the fluid field in thermal water jet nozzle based on ansys fluent amp icem cfd applied mechanics and materials vols 423 426 pp 1677 1684 2013, consists of the nozzle with spear and jet 14 the jet is designed in ansys design modeler while the nozzle with spear in solidworks ...

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  • Numerical Investigation of Multijet Air Impingement on

    2018-9-20 · The present Paper aims to present a comparative study of the external and internal flow characteristics through an axisymmetric circular convergent nozzle, a nonserpentine convergent nozzle with an elliptic exit, and a shallow single serpentine convergent nozzle with an elliptic exit under the fully expanded condition at a nozzle pressure ratio of 1.6.

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  • STUDY OF DECAY CHARACTERISTICS OF RECTANGULAR

    2013-9-8 · The air flow rate, pin fin height, the diameter of the jet and pin fin, and jet to target surface distance are the main variables, which can be chosen to solve a given heat and mass transfer problem. Reynolds number is varied in turbulent range to study the effect of Re on heat transfer coefficient. Jet exit area for each geometry of nozzle ...

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  • I ESTIMATION OF AFTERBODY DRAG WITH JET

    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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  • Some Studies on Abrasive Jet Machining - nitrkl.ac.in

    2010-5-24 · jet tests drag results) depending on the operating conditions of the nozzle of the combat aircraft. plume shape (termed as y effect, ACDY) and the effects associated with jet entrainment (termed as T effect, ACDT). The first correction term was obtained (Ref. 3 and 11) through a series of experiments by matching the

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  • Modelling and Exhaust Nozzle Flow Simulations in A

    2010-4-12 · The compressed air from the compressor enters the mixing chamber partly prefilled with fine grain abrasive particles. The vortex motion of the air created in the mixing chamber carries the abrasive particles to the nozzle through which it is directed on to the workpiece. The nozzle and the workpiece are enclosed in a working

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

    2020-4-1 · Supersonic flow from a nozzle that represents the exhaust nozzle of a supersonic combustion ramjet SCRAMJET is modelled. Jet from the nozzle is issued into a domain which is bounded on one side by an after body wall which is parallel to the centreline of the nozzle. Shocks propagating from the nozzle exit reflect from the after body.

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  • Numerical and Experimental Investigations on Jet ...

    2021-8-6 · Ansys Nozzle Jet Modeling Supersonic Jet Screech Noise Using Direct May 10th, 2019 - imperfectly expanded jet At the nozzle exist jet shear layer is thin and A quasi periodic shock cell structure is formed in the core of an receptive to external excitations Acoustic disturbances impinge on the nozzle lip and excite instability waves

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  • CHARACTERISTIC STUDY OF NON-CIRCULAR

    2013-7-31 · single jet impingement jet are the diameter of the nozzle, spacing between the jet and the target, Reynolds number and the ratio of jet spacing to diameter of the jet (Z/D). Fig. 1 Schematic of Experimental Setup The schematic of the experimental setup is shown in Fig. 1. The cooling medium is air and the same is supplied from a

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  • Nozzle Wear Parameter in Water jet machining The Review

    2018-9-20 · The present Paper aims to present a comparative study of the external and internal flow characteristics through an axisymmetric circular convergent nozzle, a nonserpentine convergent nozzle with an elliptic exit, and a shallow single serpentine convergent nozzle with an elliptic exit under the fully expanded condition at a nozzle pressure ratio of 1.6.

    Get Price
  • Effect of Shocks on Mixing and Thrust in Over-expanded

    2014-4-1 · A nozzle is required to perform abrasive waterjet machining for material removal with the help of very high velocity of waterjet. The main problem of AWJ machining process is nozzle wear during the process. The wear depends on various parameters such as water jet characteristics, nozzle geometry…

    Get Price
  • Some Studies on Abrasive Jet Machining - nitrkl.ac.in

    2013-6-3 · Effect of Shocks on Mixing and Thrust in Over-expanded Nozzles Swapneel Roy1, Thanusha M.T2, Rahul B.V3, A.A. Khan4 1, 2, 3 Aeronautical Society of India, 13 -B, Indraprastha Estate, New Delhi, India 4 Propulsion Division, CSIR - National Aerospace Laboratories, Bangalore. India

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  • International Journal of Mechanical and Aerospace ...

    2010-4-12 · The compressed air from the compressor enters the mixing chamber partly prefilled with fine grain abrasive particles. The vortex motion of the air created in the mixing chamber carries the abrasive particles to the nozzle through which it is directed on to the workpiece. The nozzle and the workpiece are enclosed in a working

    Get Price
  • DESIGN AND CFD ANALYSIS OF CONVERGENT AND

    2019-2-4 · 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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  • Experimental and computational study of fluid flow on a ...

    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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  • Investigation of Atomization and Cavitation ...

    2016-7-20 · target plate, on which jet is impinged from the chamber. The geometry details of the impingement chamber and the target plate are given in Table 1. In order to determine the static pressure distribution on the target surface, a close array of pressure tap holes of …

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  • Influence of Convergence Angle on Hollow Cone Spray ...

    2019-7-15 · effect on the exiting jet, by partially blocking the nozzle exit. Also, the implosion of cavitation bubbles inside the orifice can cause to decreasing performance of the injector. It was clear that optimal amount of cavitation is desirable, and so is important to understand the causes for cavitation generation [2]. II. LITERATURE SURVEY

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  • MODELLING STUDY OF JET- METAL INTERACTION IN LD

    2019-6-4 · the effect of inlet slot number on the spray cone angle and co-efficient of discharge at different injection pressures varied in the range of 2 to 8 bar. Firdaus et al. [7] have performed an experimental investigation to study the effect of length and diameter of discharge orifice on the air core diameter.

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