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'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 ...
Get Price2020-4-22 · determine the effect of air inlet angle are inconclusive and require further investigation. 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
Get PriceResults 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 …
Get PriceEffect 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 …
Get Price2020-1-22 · 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.
Get Price2012-4-10 · of the throat s ection [7]. In this stud y, the effects of nozzle geometry with. varios operating condi tions on the performanc e of a. desined model thermoc ompressor was investigated. Six ...
Get PriceThe nozzle of the AWJ machine is a critical component which has direct influence on the jet force developed. In the present scenario, commercially available nozzles have conical section followed ...
Get PriceRequest 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 ...
Get Price2019-2-1 · 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.
Get PricePlacing a swirl nozzle composed of a yarn channel and an air-jet nozzle in a traditional ring spinning frame can reduce yarn hairiness. In this study, two types of swirl nozzles, namely, the circular swirl nozzle and the elliptical swirl nozzle, are designed to optimize the inside structure of the swirl nozzle and improve the yarn quality. Yarn performance is evaluated based on the hairiness ...
Get Price2009-8-24 · 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 …
Get Price23rdNational 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 …
Get Price2016-7-19 · 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%
Get Price2019-2-1 · 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.
Get PricePlacing a swirl nozzle composed of a yarn channel and an air-jet nozzle in a traditional ring spinning frame can reduce yarn hairiness. In this study, two types of swirl nozzles, namely, the circular swirl nozzle and the elliptical swirl nozzle, are designed to optimize the inside structure of the swirl nozzle and improve the yarn quality. Yarn performance is evaluated based on the hairiness ...
Get Price2012-5-17 · Effect of axisymmetric sonic nozzle geometry on characteristics of supersonic air jet Journal of Thermal Science, Vol. 13, No. 2 An experimental study …
Get Price2015-10-1 · For orifice type nozzles, some researchers have studied the effect of the different contours of the orifice as shown in Fig. 1(b) , , , or the shape of the orifice such as circular, rectangular or elliptical , , , , .Obot et al. considered both sharp edged and contoured nozzles, for Re d ranging from 15,000 to 60,000. They found considerable effect of nozzle shape on heat …
Get Price2007-12-1 · The effect of nozzle diameter on the plume length has been studied by performing the CFD simulations at different nozzle diameters for condensation (d 0 = 0.4, 0.79, 1.58, 3.76, 6.35, and 9.5 mm) and reaction jets (d 0 = 0.79, 1, 2, 3.76, and 6.35 mm) by varying nozzle gas velocities and bath temperatures.Tables 2A and 2B summarize the operating conditions (nozzle diameter and its orientation …
Get Price2017-4-25 · 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 ...
Get Price2018-12-6 · 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.
Get PriceAll 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 PriceSabareesh Kumaran et al. studied the effect of nozzle geometry on diesel engine performance powered with B20 blend of diesel-rubber seed methyl ester, keeping CR, injection pressure, and nozzle hole diameter fixed by varying the nozzle geometry of 3-, 4-, and 5-holes respectively. For the fixed engine parameters, the 4-hole nozzle showed higher ...
Get Price19. 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.
Get Price2020-7-13 · An experimental investigation is carried out on an inverse diffusion flame (IDF) burners having central air jet and being surrounded by fuel jets for an impingement heat transfer. A thorough investigation has been performed to study the effects of the diameter of air jet, orientation of fuel jets and swirl in the central air jet on an inverse diffusion flame shapes, mainly on heat …
Get Price2007-10-31 · 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
Get PriceA numerical study has been conducted to analyze the effect of nozzle exit geometry (lobed nozzle) on temperature mixing at the wake of jet. A lobed nozzle is a plate with corrugated edges and facilitates efficient mixing of co-flow streams. It
Get PriceIndia 2 [email protected]*1,[email protected] ABSTRACT Numerical investigation is performed to study the effects of the L/d of the nozzle and jet-to-plate spacing on the local heat transfer distribution to normally impinging submerged air jet …
Get PriceMixing characteristics in the downcomer and the riser of a continuous down-flow jet loop bioreactor was studied with Newtonian and non-Newtonian fluids. The mixing parameters were determined through the curve fitting of the experimental impulse response data with the solution of one dimensional axial dispersion model. It was found that circulation number and axial dispersion …
Get Price2014-7-1 · It is important to know about the bath behavior to reduce the blow time and splashing in top of the converter. The target of this work is to compare works on the effect of twisted nozzle, flow and lance height in the jet penetration by visual inspection and by energy balance that consider number of nozzles, vertical and twist angles.
Get Price2021-2-12 · 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 …
Get Price2021-3-18 · 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.
Get Price19. 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.
Get Price2003-2-1 · 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
Get Price2015-7-27 · associated mainly with jet exhaust plume effects, afterbody contours, nozzle afterbody geometry, tail support boom, fairing design, nozzle/engine spacing etc.[5-9]. To understand evaluate behaviour of these complex jets freestream interactions, a hardware system has been developed for the tests in base flow wind tunnel [10-12]. The
Get PriceA numerical study has been conducted to analyze the effect of nozzle exit geometry (lobed nozzle) on temperature mixing at the wake of jet. A lobed nozzle is a plate with corrugated edges and facilitates efficient mixing of co-flow streams. It
Get Price2019-4-9 · of air and fuel and can control the turbulence level. A small change in the piston bowl geometry has an effect on the swirl ratio and turbulence intensity. The W-shaped bowl produces more swirl and turbulence at top dead centre (TDC) position as compared to flat piston bowl geometry. Prasadetal[11]studiedthree-dimensionalCFDsimulations
Get Price2018-10-3 · and air into the combustor without any premixing. Since the fuel and air are not premixed, the perfor-mance of LDI heavily depends upon the design of the air swirler.14 Dunand et al.15 experimentally investigated the influence of a swirling annular gas jet, momentum flux ratio, and surrounding pressure on the breakup and atomization of liquid jet.
Get Price2011-5-31 · targets with very uneven surfaces, the jet nozzles may have to be located too far from the surface. For jets starting at a large height above the target (over 20 jet nozzle diameters) the decay in kinetic energy of the jet as it travels to the surface may reduce average Nu by 20% or more. (2) The hardware
Get Price2007-10-31 · 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
Get Pricealong the jet axis and are more stable. The effects of rectangular tabs in controlling the jet emanating from the convergent nozzle were initially studied by Bradbury and Khadhem (1975). The potential core of the jet can be reduced to a greater extent when the tabs are kept at the exit of the convergent nozzle.
Get Price2011-5-11 · In this study, numerical simulations were carried out to determine the effects of area ratio, setback distance, mixing tube length, and shape of the driving nozzle on the performance of the jet pump. It was seen that major losses arise in the jet pump primarily due to an improper mixing of primary and secondary fluids and because of the ...
Get Price2019-2-4 · air in a cylindrical duct. With an attached flow the base pressure was having minimum value which depends mainly on the duct to nozzle area ratio and on the geometry of the nozzle. The plot of overall noise showed a minimum at a jet pressure approximately equal to that required to produce minimum base pressure.
Get Price2021-2-8 · Papamoschou, D., and Shupe, R.S.., 'Effect of Nozzle Geometry on Jet Noise Reduction Using Fan Flow Deflectors,' AIAA-2006-2707, 12th AIAA/CEAS Aeroacoustics Conference, May 8-10, 2006, Cambridge, MA.
Get Price2019-11-13 · nozzle decides the measure of push delivered by the nozzle. In fig. 1[a], [b] shown use of CD nozzle in jet engine to boosting the thrust output. [6-8] Fig: 1 [a] worked on “Design and fluid flow analysis of ConvergentApplication of CD nozzle in Jet engine, [b] Application of bell shape nozzle.
Get Price2016-7-20 · Indian Journal of Fibre & Textile Research Vol. 41, March 2016, pp. 47-54 Effect of linear density of feed yarn filaments and air-jet texturing process variables on compressional properties of woven fabrics R K Baldua, R S Rengasamy & V K Kotharia Department of Textile Technology, Indian Institute of Technology, New Delhi 110 016, India
Get Price2017-4-2 · The effect of nozzle configuration on the jet flow field is discussed with predicted mean flow and turbulent flow data. Near-field of multiple jets shows the nonlinear behavior. Multiple jets show better performance in the near-field based on entrainment, secondary flows, and area-averaged turbulent kinetic energy.
Get Pricealong the jet axis and are more stable. The effects of rectangular tabs in controlling the jet emanating from the convergent nozzle were initially studied by Bradbury and Khadhem (1975). The potential core of the jet can be reduced to a greater extent when the tabs are kept at the exit of the convergent nozzle.
Get Price2020-3-27 · two phase flow ejector motive nozzle, suction nozzle and diffuser are the main parts. Objective of the ejector design is to determine all diameters and length of these sections this ejector. By using Henry and Fauske model (Henry and Fauske, 1971) we will determine the motive nozzle throat diameter is designed.
Get PriceThis is 10-15% more than 30mm nozzle stand-off distance. 2. When Nozzle has been placed at 15mm stand-off distance then the cutting temperature is 5-8% more than 30mm nozzle stand-off distance. 3. The influence of nozzle stand-off is nearly equal to the influence speed rate on cutting temperature during more than 30mm stand-off distance. 4.
Get Price2019-4-18 · A hot jet in the cold surrounding spreads faster than a cold jet in the same surrounding. For any downstream axial distance, the maximum velocity is at the centre and minimum at the periphery such that a parabolic is developed as shown in Fig.2 Figure 2. Jet dynamics from the burner as nozzle Table 2: Burner velocity arrangement
Get Price2020-12-1 · 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
Get Price2018-9-30 · The effect of a chevron on a radiated (acoustic) component of near-field pressure fluctuations in a high-speed compressible jet is experimentally investigated for a nozzle exit Mach number of 0.8. The main focus in the present experimental study is to examine the effect of a chevron on noise sources, their location in the jet flowfield, and the ...
Get Pricealong the jet axis and are more stable. The effects of rectangular tabs in controlling the jet emanating from the convergent nozzle were initially studied by Bradbury and Khadhem (1975). The potential core of the jet can be reduced to a greater extent when the tabs are kept at the exit of the convergent nozzle.
Get Price2012-1-19 · compressibility effects (i.e. changes in density ) are important. At Ma = 1.0, the flow is called sonic, since V = a. At Mach numbers greater than 1.0, the flow is called supersonic, since the velocity is greater than the speed of sound. Bullets fired from a gun travel at supersonic speeds, as do certain jet aircraft.
Get Price2012-2-21 · The next task investigates the effects of air blast on the effervescent atomization process. An air nozzle is positioned perpendicular to the water injection in order to enhance atomization. Figures 10(c) and 10(d) compare the nozzle discharge with the air-jet at 100% for the flow condition mentioned previously. It is clear from the figure that ...
Get Price2015-1-5 · 1. Fluid Jet Geometry • Location and orientation of ATF fluid jets • Nozzle type/geometry • System flow rate • Jet velocity • Parasitic power 2. Relative positon between measured heat transfer and jet location • Impact of gravity and free fluid flow • Fluid interactions between jets
Get Price2015-1-21 · Experiments are carried out on a blunt-cone-cylinder-flare geometry to study the effect of Mach 2.65 jet plume interaction with Mach 5 freestream on overall aerodynamic coefficients. Supersonic jet plume pressure ratios P j P inf of 0 to 158 are simulated, and the angle of attack α is varied from + 4 to − 4 deg .
Get PriceThe paper presents measurements of the steady aerodynamic characteristics of a series of five radial vaneless diffusers with walls varying from mildly divergent to strongly convergent.
Get Price2021-4-9 · Diameter of nozzle {mm) Contours of Temperature D=0.8 2.604+03 D=1.0 2.543+03 Mishra, S. C., & Sahoo, N. (2007). D=1.2 2.124+03 analysis 4. CONCLUSIONS After all, the work done, the results show interesting results. It is clear that the changing the circular geometry in to nozzle shape significant effect on
Get Price2020-3-27 · two phase flow ejector motive nozzle, suction nozzle and diffuser are the main parts. Objective of the ejector design is to determine all diameters and length of these sections this ejector. By using Henry and Fauske model (Henry and Fauske, 1971) we will determine the motive nozzle throat diameter is designed.
Get Price2017-2-8 · nozzle jet ejector and is as follows A. Experimental set up 1. The experimental Setup for industry scale jet ejector is shown schematically in Figure 2. concentration and gas concentration. The results are compiled. Fig. 1 Detail of the jet ejector used in experimental setup These experiments were conducted on industrial stage
Get Pricealong the jet axis and are more stable. The effects of rectangular tabs in controlling the jet emanating from the convergent nozzle were initially studied by Bradbury and Khadhem (1975). The potential core of the jet can be reduced to a greater extent when the tabs are kept at the exit of the convergent nozzle.
Get Price2019-4-18 · A hot jet in the cold surrounding spreads faster than a cold jet in the same surrounding. For any downstream axial distance, the maximum velocity is at the centre and minimum at the periphery such that a parabolic is developed as shown in Fig.2 Figure 2. Jet dynamics from the burner as nozzle Table 2: Burner velocity arrangement
Get Price2015-8-12 · The spray nozzle used in test HP4_2_2, was a full cone nozzle, provided by SSCO Spraying System AG under the reference HH-30, which has an opening angle of 30o. The spray nozzle was mounted in a pipe and the exit of the spray nozzle was 6.9 m above the vessel bottom i.e. about 1.1 m below the vessel dome.
Get Price2020-7-22 · the facility nozzle so that proper boundary layer is accounted at combustor entry to predict the upstream interaction in dual mode combustion system. In this present work, dual-mode scram-jet experimental study of Chinzei et al. (1993) is thermo-chemically explored to understand the effect of simple H 2-air kinetics and combustor
Get Price2020-1-8 · Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17) Toronto, Canada – August 21 – 23, 2017 Paper No. 110 DOI: 10.11159/ffhmt17.110 110-1 Computational Analysis of Bell Nozzles Beena D. Baloni, Sonu P. Kumar, S. A. Channiwala
Get PriceThe working of an ACHEON system rely on two effects namely jet interaction and the Coanda effect [5]. The tendency of a fluid to adhere to a curved surface (Figure 1) is called as the coanda effect. This phenomenon occurs because of the reduction in pressure caused by the high velocities of the jet …
Get Price2017-10-27 · Anuj Bajpai and Ethirajan Rathakrishnan Tab Geometry Effect on Supersonic Elliptic Jet Control, International Journal of Trubo and Jet Engines, 2016, DOI 10.1515/tjj, 2016-0020. Defromont Thomas and E Rathakrishnan Supersonic Jet Control with Air …
Get PriceThis is 10-15% more than 30mm nozzle stand-off distance. 2. When Nozzle has been placed at 15mm stand-off distance then the cutting temperature is 5-8% more than 30mm nozzle stand-off distance. 3. The influence of nozzle stand-off is nearly equal to the influence speed rate on cutting temperature during more than 30mm stand-off distance. 4.
Get PriceComplex nozzles use modifications to the exit geometry of supersonic nozzle to enhance the rate of mixing. Complex nozzles have significant beneficial effects when applied in air-breathing engines and supersonic ejectors. The far-field flow structure of supersonic free jets from complex nozzles have not been studied.
Get Price2017-2-10 · Elliptic nozzle aspect ratio effect on controlled jet propagation. ... Indian Institute of Technology, Kanpur, India. A schematic sketch of the open jet facility with dimensions (in cm) is shown in figure 1. The compressed air from storage tanks is delivered to the settling chamber through a pressure-regulating valve.
Get Price2017-2-8 · nozzle jet ejector and is as follows A. Experimental set up 1. The experimental Setup for industry scale jet ejector is shown schematically in Figure 2. concentration and gas concentration. The results are compiled. Fig. 1 Detail of the jet ejector used in experimental setup These experiments were conducted on industrial stage
Get Price2015-1-5 · 1. Fluid Jet Geometry • Location and orientation of ATF fluid jets • Nozzle type/geometry • System flow rate • Jet velocity • Parasitic power 2. Relative positon between measured heat transfer and jet location • Impact of gravity and free fluid flow • Fluid interactions between jets
Get Price2020-7-22 · the facility nozzle so that proper boundary layer is accounted at combustor entry to predict the upstream interaction in dual mode combustion system. In this present work, dual-mode scram-jet experimental study of Chinzei et al. (1993) is thermo-chemically explored to understand the effect of simple H 2-air kinetics and combustor
Get PriceComplex nozzles use modifications to the exit geometry of supersonic nozzle to enhance the rate of mixing. Complex nozzles have significant beneficial effects when applied in air-breathing engines and supersonic ejectors. The far-field flow structure of supersonic free jets from complex nozzles have not been studied.
Get Price2014-5-21 · IJRMET Vo l. 4, Issu E 1, No V 2013 - Ap RI l 2014 ISSN : 2249-5762 (Online) | ISSN : 2249-5770 (Print) 76 InternatIonal Journal of research In MechanIcal engIneerIng & technology www.ijrmet.com Studies on Flow from Convergent Nozzle with Sudden Expansion and Control Effectiveness under the Influence of Micro Jets 1Syed Ashfaq, 2S. A. Khan 1Dept. of Mechanical …
Get Price2017-10-27 · Anuj Bajpai and Ethirajan Rathakrishnan Tab Geometry Effect on Supersonic Elliptic Jet Control, International Journal of Trubo and Jet Engines, 2016, DOI 10.1515/tjj, 2016-0020. Defromont Thomas and E Rathakrishnan Supersonic Jet Control with Air …
Get Price2020-1-8 · Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17) Toronto, Canada – August 21 – 23, 2017 Paper No. 110 DOI: 10.11159/ffhmt17.110 110-1 Computational Analysis of Bell Nozzles Beena D. Baloni, Sonu P. Kumar, S. A. Channiwala
Get Price2021-6-28 · The air jet is 1/2 the ID of the nozzle and as the air stream is passed through both, it creates a low pressure which sucks the media from the hopper into the air stream. The media acceleration distance is very short ( from the nozzle to the workpiece-approximately 4 to 14”). The suction systems work fine and can be continuously blasted as ...
Get Price2020-7-25 · Calculations. The relationships for flow rate, pressure loss and head loss through orifices and nozzles are presented in the subsequent section. These relationships all utilise the parameter. β. eta β, the ratio of orifice to pipe …
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