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  • Effect of nozzle geometry on the performance and

    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 ...

    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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  • Experimental Study of Influence of Different Nozzle ...

    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

    2013-3-1 · 1. Introduction. Impinging jet has been widely used for applications where high heat and mass transfer rates are required. A variety of nozzle geometries ranging from slots to square edged (from profited plate) and round jet .Previous studies have demonstrated the dependence of heat transfer on a number of parameters, including the Reynolds number of jet, nozzle to plate spacing, the presence ...

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  • TO STUDY THE EFFECT OF CANTED ANGLE IN

    2016-6-21 · The effect of nozzle diameter on heat transfer coefficient is investigated (Jacob, et al, 2013). Submerged air jet is used to investigate the fluid flow and heat transfer characteristics with a circular jet (Anwarullah et al, 2012) and they observed that Nusselt number increases with decrease in nozzle to plate spacing. The effect of flat plate ...

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  • CFD Analysis of Supersonic Coaxial Jets on Effect of ...

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

    2018-6-20 · nozzles of Mach number of 1.76 and canted twin jet has lower turbulence level due to jet interaction in the inter nozzle region. The main objective of this study is to compare the jet structure, turbulence quantities of twinjets and the effect of canted angle in turbulence mixing in supersonic twinjet.

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  • SSRG International Journal of Mechanical Engineering

    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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  • Flow Investigation of an Axisymmetric Single and Multi Jets

    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 …

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

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

    2020-8-10 · Hence, larger LTR leads to larger breakup length of liquid jet. 3.2. Effect of nozzle geometry on jet instability. It can be observed in Fig. 4 that the jet breakup length as well as the structure of the jet core vary from one time instant to other even if the regime of jet breakup does not change. This was observed for all nozzles and ...

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

    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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  • Nozzle Wear Parameter in Water jet machining The Review

    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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  • Heat transfer enhancement by jet impingement on

    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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  • Review of Correlations on Jet Impingement Cooling

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

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

    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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  • EXPERIMENTAL AND STATISTICAL ANALYSIS ON THE

    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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  • Flow visualization of the jet exiting a chevron nozzle

    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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  • MICRO MACHINING PROCESSES - IIT Kanpur

    2018-7-19 · 54,000.35 An important parameter to be considered in the jet field, is the nature of the nozzle, which is a conventional conical nozzle in the present study when compared to the contoured nozzle of Bradbury & Khadem.19 A jet issuing out of the conventional conical nozzle will decay and diffuse much earlier than the jet from the contour nozzle.

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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

    Get Price
  • Numerical Investigation of Multijet Air Impingement on

    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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  • 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

    Get Price
  • Review of Correlations on Jet Impingement Cooling

    1992-11-1 · Four different nozzle exit conditions were studied, including fully developed pipe flow, a contoured nozzle, and turbulence-damped and -undamped sharp-edged orifices. Liquid jet Reynolds numbers in the range 30,000 to 55,000 were investigated. …

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

    19. P.A.Harari, J.S.Patil, “A Review on Effect of Nozzle Hole Geometry on the Performance, Combustion and Emission Parameters of CI Engine Fuelled with Diesel and Biodiesel”, International Journal of Engineering and Management Research, 2016, 6(3), 39-48. 20.

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  • EXPERIMENTAL AND STATISTICAL ANALYSIS ON THE

    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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  • 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

    Get Price
  • NOZZLES - UPM

    2021-4-2 · chevron along jet & plot the graph of it at different position for those various designed nozzles. P. Kaleeswaran, P. Shanmughasundaram[2],Experimental and Statistical analysis on the noise reduction using chevron nozzle in supersonic free jet, U.P.B. Sci. Bull., Series D, …

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

    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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  • DECAY OF SUPERSONIC RECTANGULAR JET ISSUING

    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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  • Numerical Investigation of Heat and Flow Characteristic

    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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  • Corrugated Tabs for Supersonic Jet Control (Keynote Paper)

    2018-3-11 · complexity of mechanism of heat removal. The study of air jet impingement system has various parameters which effect the cooling process. These parameters are jet Reynolds number, mass flow rate of the air, air temperature, jet exit cross sectional area, number of jet used in a system, and jet …

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  • Modelling and Exhaust Nozzle Flow Simulations in A

    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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  • CHARACTERISTIC STUDY OF NON-CIRCULAR

    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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