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  • Effect of Various Nozzle Profiles on Performance of a Two ...

    They found that the air pressure was the most important parameter affecting yarn mechanical properties.Instrumentation: As shown in Figure 1, a standard 'Zeng and Yu' [5] by simulating the air flow inside the Murata air jet was attached to Repco ST yarn machine. nozzles concluded that with increasing the air pressure,The double-nozzle air jet was located on the region tensile properties of yarn …

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  • Properties of Composite Nanofiber Produced by Single

    Earlier investigations have demonstrated that air interlacing improves the mechanical properties of Self-Twist (ST) yarns. In following of previous efforts, this paper discusses improving of mechanical properties of ST yarn by using double-nozzle jet.

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  • Study on Pressure and Velocity Characteristics of Double ...

    In following of previous efforts, this paper discusses improving of mechanical properties of ST yarn by using double-nozzle jet. In the present work, at first, a Murata jet was attached to Repco ST yarn machine which the air pressure and distance of double-nozzle jet from twisting rollers were varied.

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  • NOZZLES - UPM

    2018-5-4 · acceleration effect of the jet speed, and thus enhancing the effect of the jet pulsation. 1. Introduction. The highpressure water jet is widely used by many industries, such as cutting, fire engineering,-drilling, and cleaning are just a few [1-4], with the increasing pressure on working conditions,

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  • Effect of Double-Nozzle Jet on Mechanical Properties

    In following of previous efforts, this paper discusses improving of mechanical properties of ST yarn by using double-nozzle jet. In the present work, at first, a Murata jet was attached to Repco ST yarn machine which the air pressure and distance of double-nozzle jet from twisting rollers were varied.

    Get Price
  • Study on Pressure and Velocity Characteristics of Double ...

    2018-5-4 · acceleration effect of the jet speed, and thus enhancing the effect of the jet pulsation. 1. Introduction. The highpressure water jet is widely used by many industries, such as cutting, fire engineering,-drilling, and cleaning are just a few [1-4], with the increasing pressure on working conditions,

    Get Price
  • Effect of Nozzle-to-Target Spacing on Fin

    2019-1-15 · Singh, P, Zhang, M, Ahmed, S, & Ekkad, SV. 'Effect of Nozzle-to-Target Spacing on Fin Effectiveness and Convective Heat Transfer Coefficient for Array Jet Impingement Onto Novel Micro-Roughness Structures.' Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition. Volume 8A: Heat Transfer and Thermal Engineering ...

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  • Effect of nozzle boundary layers on rocket exhaust

    2012-5-17 · Effect of nozzle boundary layers on rocket exhaust plumes. Xin M. He. DSMC Simulation of Parallel, Oblique and Normal Free Jet Impingements on a Flat Plate. Yu. Gerasimov, JOHN COCHRAN, JR. Exhaust plumes from nozzles with wall boundary layers. Loading ...

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  • Influence of nozzle asymmetry on supersonic jets |

    2012-5-17 · 27 January 2016 | The Aeronautical Journal, Vol. 118, No. 1209. Effects of area-ratio on the near-field flow characteristics and deflection of circular inclined coaxial jets. Experimental Thermal and Fluid Science, Vol. 54. Effect of a tab on the aerodynamical development and noise of an underexpanded supersonic jet.

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  • Experimental studies of a steam jet refrigeration cycle ...

    2015-8-13 · Performance of the steam jet refrigeration is strongly depen-dent on the equipped ejector. In the past, a small-scale steam jet was studied experimentally. Effects of the operating temperatures and effect of the primary nozzle position [2,3] were carried out. Some researchers used CFD technique to explain the process in side the ejector [4–7].

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  • TEG design for waste heat recovery at an aviation jet ...

    2019-12-11 · Scheme of the thermoelectric double leg configuration composed of isolation layers (IS), metallic bridges (MB), the p- and n-type TE material legs, and the TiAl nozzle (a.). Schematic of the installation at the aircraft nozzle and exemplary temperature distribution along the …

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  • Multiparameter Optimization of Thrust Vector Control

    2021-7-19 · 3 Department of Mechanical Engineering, Faculty of Science, Engineering and Computing, Kingston University, ... Thrust vector control with the injection of the gas jet into a nozzle is relatively ... eddy simulation of the effect of the high injection rate on the boundary layer development was investigated in [8].

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  • Nozzle: Applications, General-Flow Analysis, Velocity ...

    2021-8-6 · 3. General-Flow Analysis of a Nozzle: Assumptions: 1. The flow of the fluid is assumed to be one dimensional. 2. The change in area and curvature along the axis of the duct are gradual. 3. Thermodynamic and mechanical properties are uniform across planes normal to the axis of a duct. 4. The flow of the fluid is assumed to be steady flow.

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  • STRUCTURE AND PROPERTY COMPARISON OF ALLVAC

    2012-3-5 · STRUCTURE AND PROPERTY COMPARISON OF ALLVAC® 718PLUS™ ALLOY AND WASPALOY FORGINGS Ian Dempster1, Wei-Di Cao2, Richard Kennedy2, Betsy Bond2, Jose Aurrecoechea3, and Mark Lipschutz3 1 Wyman-Gordon Houston Forgings, 10825 Telge Road, Houston, TX 77095, USA 2 ATI Allvac, 2020 Ashcraft Avenue, Monroe, NC 28110, USA 3 Solar Turbines …

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  • On Switching of a Flip-Flop Jet Nozzle with Double Ports ...

    2016-10-10 · lation using the ordinary nozzle. Keywords Flip-Flop Jet Nozzle, Flowmeter, Fluidics, Mixing, Flow Control 1. Introduction The flip-flop jet nozzle (hereinafter, referred to as FFJN) is regarded as one kind of flui-How to cite this paper: Inoue, T., Nagaha-ta, F. and Hirata, K. (2016) On Switching of a Flip-Flop Jet Nozzle with Double Ports by

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  • Injector Nozzle Hole Parameters and their Influence on ...

    2016-9-20 · As jet nozzle angle increases from α=60° to α=120°, the static pressure ratio increases for the upstream region and decreases for the downstream region, and the total pressure loss ratio increases. The rotation movement and heat transfer intensity will decrease when jet nozzle angle changes away from α=90°. The air jetting velocity ...

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  • NOZZLES - UPM

    2009-2-9 · Injector Nozzle Hole Parameters and their Influence on Real DI Diesel Performance ... chemically bound energy into mechanical work. The first stage of the ... vaporization and air entrainment into the jet. A growing vapor phase develops around the spray that eventually forms the so

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  • Jet Impingement Heat Transfer: Physics, Correlations, and ...

    2021-1-2 · effect of boundary layers become predominant. Restricting the analysis to isentropic flows, the minimum set of input parameters to define the propulsive properties of a nozzle (the thrust is the mass-flow-rate times the exit speed, F mv = e) are: • Nozzle size, given by the exit area, A. e

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  • Nozzle and needle during high viscosity adhesive jetting ...

    2015-3-16 · contact-jetting dispenser [3, 4]. The piezoelectric jet-dispen-sing valve uses a mechanical amplification mechanism for piezoelectric stack-displacement amplification to drive the ball needle into hitting the nozzle movement to achieve jet-ting. Nguyen [5] proposed a piezoelectric jet-dispensing valve based on a flexible-zoom lever.

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  • Demonstrating the style for the Journal of Physics ...

    2015-9-9 · The ball needle and the nozzle press on the glue when the ball needle hits the nozzle, and this high pressure drives the glue to overcome its adhesion and jet through the nozzle orifice. A study found that the adhesive solution accumulates in the nozzle and cannot overcome the surface tension to jet out when the jet velocity is small.

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  • TRANSIENT MULTIPHASE FLOW PHENOMENA AND

    2016-10-13 · This research deals with the oscillation mechanism of a flip-flop jet nozzle with a connecting tube, based on the measurements of pressures and velocities in the connecting tube and inside the nozzle. The measurements are carried out varying: 1) the inside diameter d of the connecting tube; 2) the length L of the connecting tube and 3) the jet velocity VPN from a primary-nozzle exit.

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