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  • Effect of Dual Fuel Nozzle Structures on Combustion Flow ...

    2013-11-12 · In the double swirl nozzle combustor, at mm, the profile of H 2 has two peaks and shows an M shape. The H 2 mole fraction decreases with increasing the axial distance, due to mixing with air and the combustion of fuel. And the radial space of the H 2 distribution becomes wider with increasing the axial distance, due to the swirling flow of the fuel. More uniform profiles of H 2 mole fraction ...

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  • Effect of nozzle geometry on critical-subcritical flow ...

    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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  • Effect of Anodic Behavior on Electrochemical Machining of ...

    2017-4-10 · To obtain a suitable parameter window for the nozzle travel rate in jet ECM process, its effect on the machining quality index was investigated using both simulation and experiments, as shown in Fig. 12, Fig. 13. Fig. 12 exhibits top-view profiles of the grooves obtained using different nozzle travel rates: 250, 100, 50, 25 and 10 μm s −1.

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  • Transient Fluid Flow during Steady Continuous Casting of ...

    2014-7-15 · effect of double-ruler EMBr with argon gas injection on mold flow10) and biased flow induced by nozzle misalignment.11) Only a few previous studies have investigated the effect of EMBr on transient flow and flow stability.12–17) Timmel et al. found that single-ruler EMBr across the nozzle port induces significant jet fluctuations with non ...

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  • Optimization of fluid characteristics in the main nozzle ...

    2021-8-25 · In this research, the jet-flow characteristics under tank pressures of 2 ∼ 6 kgf/cm2 were studied to obtain basic data for an optimal design of the main nozzle in an air- jet loom.

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  • Numerical Study on Effects of Jet Nozzle Angle and

    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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  • Heat transfer under a precessing jet: effects of unsteady ...

    2004-6-1 · In Section 2.1 the design of the precessing jet nozzle (PJN) was described already. A crucial point in testing a new nozzle is the choice of an adequate reference case. After a careful consideration of all important aspects we decided to choose the inline jet nozzle (IJN) shown in Fig. 5 as our reference case. Thus, the only difference between ...

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  • Effect of hypersonic flow chemical composition on the ...

    2019-10-1 · Fig. 14 shows the distribution of Mach number inside the mixing chamber and supersonic nozzle of the arc-jet facility in the case of air flow and in correspondence of a total enthalpy equal to 20 MJ/kg, Step 7a in Table 1. The slightly supersonic core jet coming from the torch is visible on the axis.

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  • Compressed Air - Air Nozzles and Accessories

    2021-1-18 · round jet nozzles series 600.326.5K 38 series 600.326.3W 40 series 600.388.30 42 series 600.625.1y 44 series 600.387.35 46 series 544 48 special nozzles series 540/541 50 Accessories Ball joints/Nipple 52 eyelet clamps double nipples Nuts53 cost efficiency employee safety Service offering Cost efficiency Lechler nozzles make it possible

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  • Journal of Applied Polymer Science: Vol 138, No 36

    Cover Image, Volume 138, Issue 36. Guoyan Wang, Shujian Gao, Jimin He, Zijuan An, Cuiying Shao, Yun Ding, Zhiming Jin. , 51267. First Published: 12 June 2021. The image created by Guoyan Wang and Jimin He shows the “Jet Flow” phenomenon when the UHMWPE melt is ejected from the nozzle, on the basis of which the novel non-dense injection ...

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  • Effect of Dual Fuel Nozzle Structures on Combustion Flow ...

    2013-11-12 · In the double swirl nozzle combustor, at mm, the profile of H 2 has two peaks and shows an M shape. The H 2 mole fraction decreases with increasing the axial distance, due to mixing with air and the combustion of fuel. And the radial space of the H 2 distribution becomes wider with increasing the axial distance, due to the swirling flow of the fuel. More uniform profiles of H 2 mole fraction ...

    Get Price
  • Effect of nozzle geometry on critical-subcritical flow ...

    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 …

    Get Price
  • Effect of Anodic Behavior on Electrochemical Machining of ...

    2017-4-10 · To obtain a suitable parameter window for the nozzle travel rate in jet ECM process, its effect on the machining quality index was investigated using both simulation and experiments, as shown in Fig. 12, Fig. 13. Fig. 12 exhibits top-view profiles of the grooves obtained using different nozzle travel rates: 250, 100, 50, 25 and 10 μm s −1.

    Get Price
  • Transient Fluid Flow during Steady Continuous Casting of ...

    2014-7-15 · effect of double-ruler EMBr with argon gas injection on mold flow10) and biased flow induced by nozzle misalignment.11) Only a few previous studies have investigated the effect of EMBr on transient flow and flow stability.12–17) Timmel et al. found that single-ruler EMBr across the nozzle port induces significant jet fluctuations with non ...

    Get Price
  • Optimization of fluid characteristics in the main nozzle ...

    2021-8-25 · In this research, the jet-flow characteristics under tank pressures of 2 ∼ 6 kgf/cm2 were studied to obtain basic data for an optimal design of the main nozzle in an air- jet loom.

    Get Price
  • Numerical Study on Effects of Jet Nozzle Angle and

    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 ...

    Get Price
  • Heat transfer under a precessing jet: effects of unsteady ...

    2004-6-1 · In Section 2.1 the design of the precessing jet nozzle (PJN) was described already. A crucial point in testing a new nozzle is the choice of an adequate reference case. After a careful consideration of all important aspects we decided to choose the inline jet nozzle (IJN) shown in Fig. 5 as our reference case. Thus, the only difference between ...

    Get Price
  • Effect of hypersonic flow chemical composition on the ...

    2019-10-1 · Fig. 14 shows the distribution of Mach number inside the mixing chamber and supersonic nozzle of the arc-jet facility in the case of air flow and in correspondence of a total enthalpy equal to 20 MJ/kg, Step 7a in Table 1. The slightly supersonic core jet coming from the torch is visible on the axis.

    Get Price
  • Compressed Air - Air Nozzles and Accessories

    2021-1-18 · round jet nozzles series 600.326.5K 38 series 600.326.3W 40 series 600.388.30 42 series 600.625.1y 44 series 600.387.35 46 series 544 48 special nozzles series 540/541 50 Accessories Ball joints/Nipple 52 eyelet clamps double nipples Nuts53 cost efficiency employee safety Service offering Cost efficiency Lechler nozzles make it possible

    Get Price
  • Journal of Applied Polymer Science: Vol 138, No 36

    Cover Image, Volume 138, Issue 36. Guoyan Wang, Shujian Gao, Jimin He, Zijuan An, Cuiying Shao, Yun Ding, Zhiming Jin. , 51267. First Published: 12 June 2021. The image created by Guoyan Wang and Jimin He shows the “Jet Flow” phenomenon when the UHMWPE melt is ejected from the nozzle, on the basis of which the novel non-dense injection ...

    Get Price
  • Investigation of Jet Mixing Characteristics Using Slotted ...

    convergent nozzle. The use of mechanical tabs (Ahuja and Brown 1989; Bohl and Foss 1996; Wishart et al. 1993; Zaman et al. 1994) quantifies in controlling the jet and the formation of paired vortices, which are counter rotating in the streamwise direction and their effect on jet mixing and jet spread.

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  • A New Diamond Micro Heater for Inkjet Printheads

    2016-12-5 · addition, the excellent mechanical properties of diamond guarantee protection against cavitation damages. The new ... chambers and nozzles. This new device is ... Figure 6. Simulated Effect of Heater Temperature for a Double Heating Pulse Figure …

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  • Mixing Enhancement from Severely Overexpanded Nozzles

    2018-2-28 · 1.5: Figure 5a depicts the single jet; Figure 5b depicts the jet surrounded by a coflow from a convergent nozzle; and Figure 5c depicts the jet surrounded by a convergent-divergent nozzle. In the dual stream cases, the coflow was supplied at a nozzle pressure ratio of NPR=1.75 and the mass flow rates were equal.

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  • Near-Field Acoustical Characterization of Clustered

    2020-8-6 · = peak frequency, Hz 41b = bandwidth of the frequency band, Hz LWb = sound pow'er level in the band centered on frequency b, dB (re I O Me = jet exit Mach number, Ue ae = nozzle mass flow rate, kg/s n = number of nozzles r = length of the radius line from the assumed position of the frequency source to the point on the vehicle r 3 = exit radius of individual nozzles

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  • Effect of dielectric and conductive targets on plasma jet ...

    2018-12-13 · A double layer DBD plasma jet driven by a pulsed generator is used for SiO x thin film deposition. The effects of dielectric and conductive targets on discharge behavior and film properties are analyzed. Different fraction of N 2 is added to the working gas (argon) to modulate film growth rate. The electrical property and optical emission of ...

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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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  • (PDF) Measurement of Flow Rate and Impact Force on ...

    The jet is directed to vane of turbine wheel that is rotated by the force generates due to change of momentum of the fluid according to Newton’s second law of motion [8]. The principle is used in designing impulse turbine; part of the fluid energy is transformed to kinetic energy in a nozzle that issues a jet of fluid at high speed [8].

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  • Effect of nitriding on the corrosive wear performance of

    2017-6-16 · 1 Effect of nitriding on the corrosive wear performance of a single and double layer Stellite 6 weld cladding F.Brownlie1*, T.Hodgkiess2, A.Pearson3, A.M.Galloway1 1Department of Mechanical & Aerospace Engineering, University of Strathclyde, Glasgow, UK. 2Porthan Ltd, Lochgilphead, UK. 3Weir Engineering Services, East Kilbride, UK Abstract This study investigates the corrosive wear behaviour ...

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  • Nozzles, turbulence, and jet noise prediction

    Jet noise prediction is notoriously challenging because only subtle features of the flow turbulence radiate sound. The article by Brès et al. (J. Fluid Mech., vol. 851, 2018, pp. 83–124) shows that a well-constructed modelling procedure for the nozzle turbulence can provide unprecedented sub-dB prediction accuracy with modest-scale large-eddy simulations, as confirmed by detailed comparison ...

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  • TH IC K-FILM C H IP RESISTO R - IC pdf datasheet IC ...

    2016-11-18 · However, double waves soldering is mainly used. This method is designed so that the continuous and multiple dipping processes by waves of solder having completely different primary and secondary characteristics and waveforms. With the primary wave, a comparatively strong jet flow is used to remove the flux gas and to solder.

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  • Breakup of diminutive Rayleigh jets

    2021-8-6 · Breakup of diminutive Rayleigh jets Wim van Hoeve,1 Stephan Gekle,1 Jacco H. Snoeijer,1 Michel Versluis,1 Michael P. Brenner,2 and Detlef Lohse1 1Physics of Fluids, Faculty of Science and Technology, and MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands 2School of Engineering and Applied Sciences, Harvard University, …

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  • Effect of Tabs on the Flow and Noise Field of an ...

    2019-12-18 · The effect of vortex generators, in the form of small tabs projecting normally into the flow at the nozzle exit, on the characteristics of an axisymmetric jet is investigated experimentally over the jet Mach number range of 0.3-1.81. The tabs eliminate screech noise from supersonic jets and alter the shock structure drastically. They

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  • Simulation and experimental study of direct spray type ...

    2020-1-7 · with the property of converting mechanical energy to electrical energy (direct piezoelectric effect) and electrical energy to mechanical energy (indirect piezoelectric effect). Due to this unique property, piezoelectric material is widely used in engineering and medical fields (Vijaya 2016). Pressure sensors (Yang et al. 2018), ultrasonic

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  • Theoretical model and characteristics analysis of ...

    To analyze the deflector-jet servo valve’s internal flow characteristics, a theoretical model of the complicated flow distribution in the deflector plate is established based on the offset jet attachment theory. When the deflector plate offsets, jet attachment parameters are attained to figure out the jet…

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  • 1. Introduction - Moog Inc.

    2017-5-22 · Fig 2. Nozzle - Flapper Valve Similarly, Foxboro developed the nozzle-flapper valve which uses the cylindrical curtain orifice area formed by a flat plate moving towards a sharp edged orifice. Fig 2. Siemens of Germany developed a dual-input valve that accepted mechanical inputs through a

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  • Large eddy simulation of a circular jet: effect of inflow ...

    Large eddy simulation of a circular jet: effect of inflow conditions on the near field - Volume 620 ... in view of the energy of the axial velocity fluctuations integrated over the radial direction, the double-helix mode (mode 2) becomes dominant past the potential core, but the axisymmetric mode (mode 0) is dominant near the jet exit ...

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  • A UNIQUE FLUID DIVERTER DESIGN FOR WATER FLOW

    3.1 General and Flow Mechanical Requirements The diverter is to work properly within a flow rate range of 1:100. The diversion of the flow must not have any reaction on the water flow. Therefore, an open system with a free water jet is preferred. The nozzle design has to guarantee that within the whole flow rate range a full, not splashing ...

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  • Formation Criterion for Synthetic Jets

    2012-5-2 · Formation Criterion for Synthetic Jets. Ryan Holman , Yogen Utturkar , Rajat Mittal , Barton L. Smith and. Louis Cattafesta. Ryan Holman. University of Florida, Gainesville, Florida 32611-6250. Search for more papers by this author.

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  • FABRICATION AND ERECTION OF STRUCTURAL

    2018-4-12 · nozzle. The heat is focussed on to a very narrow band and the steel melts at 15000 C when a jet of high-pressure oxygen is released through a separate hole in the centre of the nozzle to blast away the molten metal in globules. The desired cuts are obtained quickly by this process. However due to a rapid thermal cycle of heating and cooling ...

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  • CHAPTER 21 Mechanical Design of Mixing Equipment

    2011-6-20 · Mechanical Design of Mixing Equipment D. S. DICKEY MixTech, Inc. J. B. FASANO Chemineer, Inc. 21-1 INTRODUCTION Mixing equipment must be designed for mechanical and process operation. Al-though mixer design begins with a focus on process requirements, the mechanical design is essential for successful operation. Usually, a competent manufacturer of

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  • Centrifugal Mud Pump

    2014-5-4 · Jet Mud Mixer Used to adjust drilling fluid density, viscosity, acid and alkali property, etc. And to work with shear pump together, it will perform effectively. -Venturi tube and original jet nozzle combination design -Double jet mud mixer could be designed Mud Gun With simple structure, flexible operation, easy using,

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  • Jet Pumps Selection Guide: Types, Features, Applications ...

    2020-8-17 · Jet pumps are centrifugal pumps with an ejector (venturi nozzle) attached at the discharge outlet. They function based upon the Venturi effect of Bernoulli's principle - utilizing constriction to reduce pressure and provide suction. After the pump is primed, …

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  • www.ktr

    2015-11-17 · jet or jet stream drives are being used more and more fre-quently. This is not surprising given the many advantages offered by such systems in comparison to conventional pro-peller drives: a lower draught, greater manoeuvrability near the coast, higher agility at low speeds, better mechanical protection, less vibration and smoother running. And, of

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  • Simulation of Motion of Long Flexible Fibers with ...

    Air-jet loom is a textile machine designed to drive the long fiber using a combination flow of high-pressure air from a main nozzle and a series of assistant nozzles. To make the suggestion of how to make the fiber fly with high efficiency and stability in the jet flow, in which vortices also have great influence on fiber movement, the large eddy simulation method was employed to obtain the ...

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  • Nozzle Loads - Part 1 - Piping Engineering - Knowledge base

    Nozzle Loads 1.0 Introduction to Nozzle Loads. As a minimum, the Piping Stress Engineer shall ensure that the loads on the Nozzle of the Mechanical Equipments are within these values. In the event the loads are exceeding the allowable loads values, …

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  • Masoneilan Control Valve Sizing Handbook

    2016-2-3 · minor effect on valve capacity. If the specific gravity is not There is no substitute for good engineering judgement. Most errors in sizing are due to incorrect assumptions as to actual flowing conditions. Generally speaking, the tendency is to make the valve too large to be on the 'safe' side (commonly referred to as 'oversizing').

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  • Carbon–Reinforced Polymer Nanocomposites: Journal of ...

    2020-7-15 · A potential thermoplastic elastomer based on blends of EMA and NBR was explored. In this case, the processing conditions for the blends like mixing temperature, rotor speed, and mixing time are selected as per Taguchi's L 9 orthogonal array methodology and optimized through physicomechanical property evaluation using the statistical design of experiment method.

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  • Pelton Wheel Turbine: Definition, Parts, Working Principle ...

    2021-8-27 · Pelton Wheel Turbine is the type of impulse or hydraulic turbine which is used for high heads for the generation of power. In this, the jet after leaving the nozzle runs in the open air and strikes the bucket or vane. The Pelton wheel turbine is developed by Lester Allan Pelton, who is …

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    2015-11-17 · jet or jet stream drives are being used more and more fre-quently. This is not surprising given the many advantages offered by such systems in comparison to conventional pro-peller drives: a lower draught, greater manoeuvrability near the coast, higher agility at low speeds, better mechanical protection, less vibration and smoother running. And, of

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  • Hydrodynamics of pulsed jetting in juvenile and adult ...

    The ratio of jet length [based on the vorticity extent(L ω)] to jet diameter [based on peak vorticity locations (D ω)] was <3.0 for jet mode I and>3.0 for jet mode II, placing the transition between modes in rough agreement with F determined in mechanical jet studies. Jet mode II produced greater time-averaged thrust and lift forces and was ...

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  • Inkjet printing for flexible and wearable electronics: APL ...

    2020-12-16 · High field-effect mobility can be achieved by oxidizing the TFTs, but the metal-oxide materials have intrinsic poor mechanical properties in wearable applications. For OTFTs of organic inks deposited on metal electrodes, the material interfaces …

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  • Challenges Facing the Implementation of Pico

    2021-3-30 · 840 million people living in rural areas across the world lack access to electricity, creating a large imbalance in the development potential between urban and rural areas. Pico-hydropower offers a cost-effective way of accessing electricity, where the resource exists. This paper discusses and critically examines several challenges that remain in implementing pico-hydropower systems, such as ...

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  • Pulsed jet dynamics of squid hatchlings at intermediate ...

    Pulsed jetting has two important components that play integral roles in thrust production. The first component is the impulse per pulse supplied by the jet momentum flux (I U) and the second component is the impulse per pulse supplied by the nozzle exit over-pressure(I P), i.e. fluid pressure above the local ambient pressure during jet ejection.These components relate to time-averaged thrust ...

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  • Forces and Pressure

    2021-8-27 · In solids Think about these two situations: Pushing a drawing pin into a wall pointy end towards the wall. Pushing a drawing pin into a wall pointy end towards your thumb. /** Two similar activities with two very different results. The reason for this is the difference in pressure. Assuming the same force is applied, each case would have a different pressure acting on the thumb.

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    Deaeration - one technology for many purposes and products. Deaeration system with gentle tangential product inflow into the pressure vessel. This method has the lowest shear rate and is applicable for all recipes. It ca be used for both aseptic and for non-aseptic deaeration. Deaeration …

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    2014-9-2 · Effect of lubrication on friction properties Yu et al. (2013), Chem Eng Sci, 86, 9-18 68. Effect of lubrication on peak roll pressure Yu et al. (2013), Chem Eng Sci, 86, 9-18 69. Effect of lubrication on nip angle Yu et al. (2013), Chem Eng Sci, 86, 9-18 70.

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    2009-9-3 · 3.2.10 A Double Flapper–Nozzle Device for Pressure-Differential Generation 104 3.2.11 The Jet Pipe and Deflector-Jet Fluidic Amplifier 109 3.3 Steady-State Flow-Reaction Forces 112 3.3.1 Basic Concepts 112 3.3.2 Application to a Simple Poppet Valve 112 3.3.3 Application to the Main Stage of a Two-Stage Pressure-Relief Valve 113

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  • A Newly Designed Microspectrofluorometer for Kinetic ...

    2006-8-1 · A simple humidifier nozzle was designed, which can be directly attached to the reflecting mirror objective to minimize the required space around the crystal for this additional component. In this nozzle, a temperature sensor can be located close to the exit of the gas stream.

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    ----- 11 TABLE OF CONTENTS 6.1.1 Effect of Quantity on Probability of Vapor Cloud Explosion 14 6.1.2 Confinement and Mixing in Vapor Cloud Explosions 15 6.1.3 Energy of Vapor Cloud Explosions 15 6.1.4 Type of Ignition 15 6.1.5 Delayed Ignition Effects 15 6.2 Vapor Cloud Fires 17 6.3 BLEVEs and Resulting Fireballs : 17 6.4 Pool Fires 20 6.5 Jet Fires 20 6.6 Projectiles 20 7.0 Accident Factors ...

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    2018-5-23 · The Mini Jet is the smallest unit in the Nordson jet cleaner product line. It utilizes heat and vacuum to effect vaporization. In most cases, complete thermoplastic removal is accomplished within 90-120 minutes at an operating temperature range between 427°C and 482°C (800°F and 900°F) and a vacuum of 635mm (25 in) of mercury.

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    1. Ion sources, single or multiple, consisting of a vapour source, ioniser, and beam accelerator made of suitable non-magnetic materials (e.g. graphite, stainless steel, or copper) and capable of providing a total ion beam current of 50 mA or greater; 2.

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    2014-2-24 · The black smoke indicates a fuel-rich fire busted, jet. This is what occurs in a jet engine, and this is the flame type that generates the most intense heat. In a pre-mixed flame, the same nearly stoichiometric mixture is ignited as it exits a nozzle, under constant pressure conditions. It does not attain the flame velocities of a jet burner.

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    2020-4-19 · FROM THE NOTEBOOK OF A NATURALIST: Artificial honeycomb--- Take a dozen and a half papier-mache supermarket egg cases (30-egg variety), tie them up or glue them together (one on top of another) in such a way as to join the 'teeth' to one another rather than to the hollows.. You will have large cells similar to the multi-cellular combs of a certain 'paper' wasp but, much bigger.

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