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  • Effect of Nozzle Geometry on Air-Jet Texturing

    2018-2-17 · The best texturing comes from nozzles with a slightly diverging main channel and a single air inlet hole located far from the nozzle exit. A curved diverging exit profile is essential for successful texturing. The results of the tests to determine the effect of air inlet angk are inconclusive and require further investigation.

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  • E ect of nozzle geometry on air-jet texturing performance

    2017-3-10 · the nozzle geometry: Nozzles 1-9 have nine different values of primary flow length LP, i.e., the distance between air inlet and nozzle exit, ranging from 4 to 16 mm. The reference nozzle is nozzle 5 with a value of LP of 10mm. Nozzles I 0 and 11 have two

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  • Effect of Geometry on the Performance of Intermingling

    2018-2-23 · This study investigates the effect of nozzle geometry on the intermingling process. The dimensions of intermingling nozzles with single air inlets extended across the width of a rectangular yam channel are systematically varied. Nozzles with this cross-sectional shape prove to …

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  • Effect of geometrical parameters of air-induction nozzles ...

    Jet pump geometry controls ALR where the tip V-cut angle controls the spray angle. ... Turkish Journal of Agriculture and Forestry, 40 (1) (2016), pp. 25-37, 10.3906/tar-1411-140. ... Effect of air induction nozzle (coarse droplet), air assistance and one-sided spraying of the outer tree row on spray drift in orchard spraying ...

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  • Experimental and computational analysis of nozzle ...

    2018-6-5 · nozzle, pressurized air and the yarn. Therefore, the researchers mainly analysed the effect of air pressure level and the structural parameters of the nozzle on airflow character and also the yarn quality either experimentally or computationally. In numerical analyses, Zeng & Yu4 used PHOENICS while Patnaik et al.5,6 Rengasamy et al.7,8 ...

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  • ABSTRACT Begenir, Asli. The Role of Orifice Design in ...

    2016-8-30 · ABSTRACT Begenir, Asli. The Role of Orifice Design in Hydroentanglement. (Under the direction of Dr. Behnam Pourdeyhimi) This research was devoted to study the role of the nozzle geometry in the

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  • ADVANCES in FLUID MECHANICS - WSEAS

    2012-9-20 · Istanbul, Turkey August 21-23, 2012 ISSN: 2227-4596 ... Experiment and Performance Prediction of Bubble-Jet Type Air-Lift Pump for Dredging Sediments on Sea and Lake Beads 27 ... Performance Study of Nozzle Geometry on Heat Transfer Characteristics - Part I: Local Heat Transfer 42

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  • Study of the Different Factors That Influence Jet Pump ...

    The objective of this work is to study experimentally the characteristics of jet pump. Suction head, driving air pressure and the percentage of the distance between throat section and nozzle are recorded. The effect of each parameter on the pump performance is investigated, in order to have a better understanding about the behavior of such pump under various conditions.

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  • (PDF) Development and testing of a relay nozzle concept ...

    2021-6-4 · Findings – The relay nozzles of the air-jet weaving technology consume up to 80 percent of the air required by the weft insertion process. At ITA a new nozzle concept was developed.

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  • (PDF) Design of high pressure waterjet nozzles

    2015-7-29 · R. Kobayashi, T. Arai and Y. Masuki, 'Water Jet Nozzle Geometry and Its effect On Erosion Process of Metallic Material', 5th American Water Jet Con/erence, August 29-31, 1989, Toronto Canada, pp ...

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  • ADVANCES in FLUID MECHANICS - WSEAS

    2012-9-20 · Istanbul, Turkey August 21-23, 2012 ISSN: 2227-4596 ... Experiment and Performance Prediction of Bubble-Jet Type Air-Lift Pump for Dredging Sediments on Sea and Lake Beads 27 ... Performance Study of Nozzle Geometry on Heat Transfer Characteristics - Part I: Local Heat Transfer 42

    Get Price
  • A New Approach to Determination of the Instability of

    2021-7-9 · Air-Jet Texturing of the Yarns . Air-jet texturing of the filaments was carried out on a SSM Stähle RM3-T machine, with the following parameters: 250 m/min texturing speed, Hemajet A347 type of nozzle, 0.8 MPa air pressure. The filaments were fed to the machine as single end method with two different overfeeds (15%, 30%).

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  • NUMERICAL STUDY OF HEAT TRANSFER DUE TO

    2016-3-10 · jet is used as a promising candidate to remove more heat from electrical components [2]. The nozzle geometry of impinging jets can be rectangular or circular. According to many studies conducted on impinging jets for circular and slot jets, the flow field and thermal characteristics are different in slot jets compared to circular jets. Jet ...

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  • Slot air jet impingement cooling over a heated circular ...

    2018-3-5 · In this study, a two-dimensional slot air jet impingement cooling of a circular cylinder of diameter, D is investigated numerically.Fig. 1 shows the geometries of slot impingement configurations with and without a flat horizontal confinement at the nozzle exit. The width of the nozzle is S and the distance from the nozzle exit to the cylinder is H.In order to study the effect of a flow ...

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  • Experimental Study of Direct Contact Condensation of

    2015-7-20 · Effect of water spray on air humidity ratio (75°C-80 % RH – Counter Flow) In the meantime, relative humidity starts to increase and it reaches saturation point (%100 RH) represented in Figure 4. If air cooled below the dew point, water vapor starts to condensed as droplets. Figure 5 represents the effect of water injection on

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  • HEAT AND FLUID FLOW ANALYSES OF AN IMPINGING

    1 INTERNATIONAL CONFERENCE ON ENERGY SYSTEMS ISTANBUL 2016- ICES2016 21-23 December 2016, Yildiz Technical University, Istanbul, Turkey HEAT AND FLUID FLOW ANALYSES OF AN IMPINGING JET ON A CUBIC BODY

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  • (PDF) A Cfd and Experimental Study on Open Jet Flows ...

    ICCHMT 2016, Cracow, Poland, 23-26 May 2016 Table 1 Various geometry of open jet equipment Geometric Short Long Area Areas Length (mm) Lentgh (mm2) (mm) Circle 15 15 706.85 Square 30 30 900 Triangle 25.92 25.92 290.91 Figure 1 Schematic of the facility Rectangle 20 30 600 Air passes through the different geometric areas and exit Ellipse 10 15 ...

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  • Estimating column diameters in jet grouting processes

    2018-8-11 · 1 Estimating column diameters in jet grouting processes Kimpritis, T.1, Standing, J.R.2 and Thurner, R.3 1 Keller Hellas S.A., formerly Imperial College London 2 Department of Civil and Environmental Engineering, Imperial College London 3 Keller Grundbau GmbH, Technical and Commercial Director Middle East and Turkey Abstract Jet grouting is widely used in geotechnical …

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  • Life Assessment of a Jet Engine Component

    2005-9-5 · Life Assessment of a Jet Engine Component E. Acar 1, M. A. Akgün Summary Thermo-mechanical fatigue life of pins connecting the first stage low pressure turbine (LPT) nozzle to the LPT nozzle support in an F110-GE-100 engine has been assessed. A commercial finite element code is used for thermal and stress analysis.

    Get Price
  • Water Jet Guided Laser vs. Conventional Laser ...

    2021-4-9 · terials. Water jet guided laser is a technology that overcomes most of these issues, where pressurized water in the process provides focusing, cooling and cleaning on the cut region, eliminating undesired side effects of the laser. In this study, cutting performanceof a water jet guided laser system and a s conventional laser system were compared.

    Get Price
  • NUMERICAL STUDY OF HEAT TRANSFER DUE TO

    2016-3-10 · jet is used as a promising candidate to remove more heat from electrical components [2]. The nozzle geometry of impinging jets can be rectangular or circular. According to many studies conducted on impinging jets for circular and slot jets, the flow field and thermal characteristics are different in slot jets compared to circular jets. Jet ...

    Get Price
  • A New Approach to Determination of the Instability of

    2021-7-9 · Air-Jet Texturing of the Yarns . Air-jet texturing of the filaments was carried out on a SSM Stähle RM3-T machine, with the following parameters: 250 m/min texturing speed, Hemajet A347 type of nozzle, 0.8 MPa air pressure. The filaments were fed to the machine as single end method with two different overfeeds (15%, 30%).

    Get Price
  • The Effect of the Air Blast Sprayer Speed on the Chemical ...

    ABSTRACT. A study was conducted to determine the spray deposition patterns for air blast sprayers used to apply chemicals to the canopy of Semillon grapevine in vineyard. The application carried out in 12 bars and three sprayer speed (2.1-4.9-7.7 km h -1 ). The spray deposition was measured on the point in the different distances (1.5-3-6-9 m).

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  • A LAGRANGIAN APPROACH FOR MODELING

    2018-1-4 · the downstream body position and also the free jet Reynolds number, u∞D/υ. Figure 2 shows the research geometry for this study. The jet flow is generated from a nozzle exit by using source elements inside the nozzle. The source distribution is chosen to be parabolic so as to provide a correct initial velocity profile at the nozzle exit.

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  • Life Assessment of a Jet Engine Component

    2005-9-5 · Life Assessment of a Jet Engine Component E. Acar 1, M. A. Akgün Summary Thermo-mechanical fatigue life of pins connecting the first stage low pressure turbine (LPT) nozzle to the LPT nozzle support in an F110-GE-100 engine has been assessed. A commercial finite element code is used for thermal and stress analysis.

    Get Price
  • PERFORMANCE OF RECTANGULAR PIN-FIN HEAT SINK

    2021-8-10 · formed by the cooling fins. The effect of air flow entrance is obvious on the coefficient of heat transfer and fin efficiency. Engineers need to select the high efficient heat sink with the best performance among a wide range sorts of heat sinks working under impinging jet from the comparison of thermal resistances of the optimized pin

    Get Price
  • Water Jet Guided Laser vs. Conventional Laser ...

    2021-4-9 · terials. Water jet guided laser is a technology that overcomes most of these issues, where pressurized water in the process provides focusing, cooling and cleaning on the cut region, eliminating undesired side effects of the laser. In this study, cutting performanceof a water jet guided laser system and a s conventional laser system were compared.

    Get Price
  • (PDF) Multiple Jet Impingement - a Review

    Int. Symp. on Heat Transfer in Gas Turbine Systems 9*14 August 2009, Antalya, Turkey MULTIPLE JET IMPINGEMENT – A REVIEW Bernhard Weigand* and Sebastian Spring Institute of Aersoapce Thermoynamics (ITLR) Universität Stuttgart Pfaffenwaldring 31, 70569 Stuttgart, Germany (* Corresponding author: [email protected]) Jet impingement systems provide an …

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  • COMPUTATIONAL SIMULATIONS OF FORE AND AFT

    2017-9-1 · retaining critical features of the geometry. For example, the trailing edge, beginning of the centerbody, the aft end of the nozzle, and the corner points at the junction of the axis and the farfield are maintained in the coarse grids as constraining parameters in much the same manner as they appear in the finest grid. In our implementation we have

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  • Original Research (AR) JEMS, 2020; 8(1): 38-52 Journal ...

    2020-3-31 · the effects of injection timing and nozzle angle on various blends formation and combustion performance in 3D model. The study has been conducted for 25 different cases. Wang et al. [10] have numerically analyzed the effect of ignition position and fuel injection timing on the engine performance and combustion in a direct-

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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%).

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

    2011-5-31 · 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 Price
  • PERFORMANCE OF RECTANGULAR PIN-FIN HEAT SINK

    2021-8-10 · formed by the cooling fins. The effect of air flow entrance is obvious on the coefficient of heat transfer and fin efficiency. Engineers need to select the high efficient heat sink with the best performance among a wide range sorts of heat sinks working under impinging jet from the comparison of thermal resistances of the optimized pin

    Get Price
  • EFFECT OF NOZZLE ASSEMBLY, ON PARTIAL

    2017-12-13 · CHAPTER 5 EVALUATION OF THE EFFECT OF NOZZLE ASSEMBLY, OPERATING CONDITION AND INSULATION TO PCU PERFORMANCE 100 5.1 Overview 100 5.2 Effect of Nozzle Assembly Design 100 5.3 Effect of Oxygen Flowrate 113 5.4 Effect of Thermal Insulation 115 5.5 Summary 121

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  • Modeling and Simulation of MEMS - DTIC

    2012-5-10 · Effect of To and Po on Performance Axisymmetric nozzle, Diffuse wall, Tw=300 T=300 K T=2000 K T=1000 K To~2,300 K •For high To, a shorter nozzle would give better performance at lower Re. •Need to optimize geometry of high temperature nozzles. •For lower pressures, the peak value of Isp is closer to the nozzle …

    Get Price
  • Life Assessment of a Jet Engine Component

    2005-9-5 · Life Assessment of a Jet Engine Component E. Acar 1, M. A. Akgün Summary Thermo-mechanical fatigue life of pins connecting the first stage low pressure turbine (LPT) nozzle to the LPT nozzle support in an F110-GE-100 engine has been assessed. A commercial finite element code is used for thermal and stress analysis.

    Get Price
  • Effect of Fuel Nozzle Configuration on Premix Combustion ...

    2014-12-23 · To date, the effect of premix fuel nozzle geometry on combustion dynamics has not been well-documented. This paper presents experimental stability data from several different fuel nozzle geometries (i.e., changing the axial position of fuel injection in the premixer, and considering simultaneous injection from two axial positions).

    Get Price
  • Spray Nozzle

    EXAIR's spray nozzle is ideal for creating fine mists for dust control, lubrication, and coatings. Available in multiple patterns. CE compliant. Shop Online!

    Get Price
  • ALPINE AIR JET SIEVE e200 LS - Amazon Web Services

    2020-5-11 · sieve, the air jet sieve is the device of choice for sieving fine powders. This is where the air jet sieve e200 LS develops maximum effectiveness. Not just one, but two compo-nents work together here: a slotted nozzle which rotates inside the sieving chamber and an industrial vacuum cleaner connected up to the sieving chamber.

    Get Price
  • Analysis of the performance of a new developed shear ...

    2019-11-25 · K. Bilen, “ An experimental investigation of heat transfer characteristics of a normal and oblique air jet impinging on heated flat plate,” Ph.D. thesis, KTU University, Turkey, 1994. Google Scholar; 46. L. Huang and M. S. El-Genk, “ Heat transfer of an impinging jet on a flat surface,” Int. J. Heat Mass Transfer 37, 1915– 1923 (1994).

    Get Price
  • 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%).

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

    2011-5-31 · 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 Price
  • PERFORMANCE OF RECTANGULAR PIN-FIN HEAT SINK

    2021-8-10 · formed by the cooling fins. The effect of air flow entrance is obvious on the coefficient of heat transfer and fin efficiency. Engineers need to select the high efficient heat sink with the best performance among a wide range sorts of heat sinks working under impinging jet from the comparison of thermal resistances of the optimized pin

    Get Price
  • EFFECT OF NOZZLE ASSEMBLY, ON PARTIAL

    2017-12-13 · CHAPTER 5 EVALUATION OF THE EFFECT OF NOZZLE ASSEMBLY, OPERATING CONDITION AND INSULATION TO PCU PERFORMANCE 100 5.1 Overview 100 5.2 Effect of Nozzle Assembly Design 100 5.3 Effect of Oxygen Flowrate 113 5.4 Effect of Thermal Insulation 115 5.5 Summary 121

    Get Price
  • Modeling and Simulation of MEMS - DTIC

    2012-5-10 · Effect of To and Po on Performance Axisymmetric nozzle, Diffuse wall, Tw=300 T=300 K T=2000 K T=1000 K To~2,300 K •For high To, a shorter nozzle would give better performance at lower Re. •Need to optimize geometry of high temperature nozzles. •For lower pressures, the peak value of Isp is closer to the nozzle …

    Get Price
  • Life Assessment of a Jet Engine Component

    2005-9-5 · Life Assessment of a Jet Engine Component E. Acar 1, M. A. Akgün Summary Thermo-mechanical fatigue life of pins connecting the first stage low pressure turbine (LPT) nozzle to the LPT nozzle support in an F110-GE-100 engine has been assessed. A commercial finite …

    Get Price
  • Effect of Fuel Nozzle Configuration on Premix Combustion ...

    2014-12-23 · To date, the effect of premix fuel nozzle geometry on combustion dynamics has not been well-documented. This paper presents experimental stability data from several different fuel nozzle geometries (i.e., changing the axial position of fuel injection in the premixer, and considering simultaneous injection from two axial positions).

    Get Price
  • Spray Nozzle

    EXAIR's spray nozzle is ideal for creating fine mists for dust control, lubrication, and coatings. Available in multiple patterns. CE compliant. Shop Online!

    Get Price
  • ALPINE AIR JET SIEVE e200 LS - Amazon Web Services

    2020-5-11 · sieve, the air jet sieve is the device of choice for sieving fine powders. This is where the air jet sieve e200 LS develops maximum effectiveness. Not just one, but two compo-nents work together here: a slotted nozzle which rotates inside the sieving chamber and …

    Get Price
  • Analysis of the performance of a new developed shear ...

    2019-11-25 · K. Bilen, “ An experimental investigation of heat transfer characteristics of a normal and oblique air jet impinging on heated flat plate,” Ph.D. thesis, KTU University, Turkey, 1994. Google Scholar; 46. L. Huang and M. S. El-Genk, “ Heat transfer of an impinging jet on a flat surface,” Int. J. Heat Mass Transfer 37, 1915– 1923 (1994).

    Get Price
  • Modeling and Simulation of MEMS - DTIC

    2012-5-10 · Effect of To and Po on Performance Axisymmetric nozzle, Diffuse wall, Tw=300 T=300 K T=2000 K T=1000 K To~2,300 K •For high To, a shorter nozzle would give better performance at lower Re. •Need to optimize geometry of high temperature nozzles. •For lower pressures, the peak value of Isp is closer to the nozzle …

    Get Price
  • COMPUTATIONAL SIMULATIONS OF FORE AND AFT

    2017-9-1 · retaining critical features of the geometry. For example, the trailing edge, beginning of the centerbody, the aft end of the nozzle, and the corner points at the junction of the axis and the farfield are maintained in the coarse grids as constraining parameters in much the same manner as they appear in the finest grid. In our implementation we have

    Get Price
  • Performance Prediction of Conical Nozzle Using Navier ...

    2015-1-6 · These test cases were 1) axisymmetric convergent conical nozzles of 15, 25, and 40 deg half-angle as well as a reference nozzle; 2) the 25 deg half-angle nozzle with a splitter plate inserted in its plane of symmetry; and 3) the vortex shedding observed at the base of the splitter plate.

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  • Aeration

    2010-2-8 · • Diffused aerators are also classified by geometry, such as “full floor coverage” or “spiral roll.” Full floor coverage systems spread the air across the entire tank bottom, while spiral roll systems may have diffusers in narrow bands, often at the tank wall, and induce a rolling action of the fluid.

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  • :: JAP :: Journal of Advanced Prosthodontics

    The surface was then air-dried. · Group 3 (APA): The surfaces were roughened with 50 µm aluminum-oxide (Al 2 O 3) particles (Korox 50, Bego, Bremen, Germany) from a distance of 10 mm for 20 seconds under 2 bar propulsion pressure (Rotaks-Dent, Istanbul, Turkey) by positioning nozzle perpendicular to the surface. The specimens were then ...

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  • Spray Nozzle

    EXAIR's spray nozzle is ideal for creating fine mists for dust control, lubrication, and coatings. Available in multiple patterns. CE compliant. Shop Online!

    Get Price
  • IOP Conference Series: Materials Science and Engineering ...

    The University of Technology in Baghdad represented by the Civil Engineering Department has been collaborated with the Istanbul Technical University-Turkey to set the fourth release of the International Conference on Buildings, Construction and Environmental Engineering (BCEE4), which is being held this year in Istanbul Technical University, Ayazaga Campus from 7 to 9 October 2019.

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  • Optimum Design Procedures of Turbojet Combustion

    2016-1-14 · long operation of turbine blades and nozzle guide vanes. The overall engine dimensions of 500 mm maximum length and 145 mm maximum diameter dictated a short length and small diameter combustor and in turn will increase the difficulties of achieving an optimum design in terms of geometry …

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  • th International Conference on Fluid Dynamics &

    2019-3-27 · Title: The Effect of the height of the horizontal layer of a liquid and pressure on hydrodynamic regimes of evaporation/boiling and critical heat flux Vladimir Zhukov, Novosibirsk State Technical University, Russia Title: The modification of Ekman-Hartmann layer by the imposition of axial velocity Satyanarayana Badeti, VIT - AP University, India

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  • Comparison of Jameson cell and jet diffuser flotation

    2017-10-20 · Comparison of Jameson cell and jet diffuser flotation column Kemal Bilir 1, Ali Ucar 2, Oktay Sahbaz 2, Hakan Gursoy 1, ... designed a new equipment considering diffusers and their effect on turbulence in any discharge point. The most suitable diffuser geometry to provide optimum flow from the downcomer to separation tank was determined using ...

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