IndiaThe influence of geometry on the performance of mixing nozzlesdirectory

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  • The influence of molecular geometry on the efficiency of ...

    The focus is on studying the intricate role of the steric effects that influence molecular geometry, and the …

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  • Effect of injector geometry on the performance of an ...

    1. Introduction. This paper describes the effect of injector geometry on the performance of an internally mixed injector. The objective of this effort is to develop a fuel injector whose spray properties could be varied in a controlled fashion to accommodate various operating conditions , .For example, it may be desirable to keep the mean droplet size constant while varying the fuel flow rate ...

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  • Numerical investigation of the influences of mixing ...

    In studying the influence of the mixing chamber length on the performance of the steam ejector, the primary, the secondary and the back pressure are fixed at 600 kPa, 15 kPa and 40 kPa, respectively. The mixing chamber length is changed without changing the convergence angle and the outlet diameter of the mixing chamber.

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  • A Numerical Study of the Influence of Diesel Nozzle ...

    A Numerical Study of the Influence of Diesel Nozzle Geometry on the Inner Cavitating Flow. 2002-01-0215. In order to analyze the influence of nozzle geometry on the internal flow characteristics of a Diesel injector, a CFD analysis of the flow through various nozzle geometries has been carried out with a commercial code.

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  • Influence of MBBR carriers’ geometry on its flow ...

    The geometry of MBBR carrier, cross-section of the MBBR carrier and the exemplary geometry with boundary conditions are presented at Fig. 1 and Fig. 2. Simulations were performed with 3 different inlet velocities and 7 different angles of inclination of the carrier θ to check its influence on the velocity field.

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  • The Influence of Shroud and Cavity Geometry on Turbine ...

    Imperfections in the turbine annulus geometry, caused by the presence of the shroud and associated cavity, have a significant influence on the aerodynamics of the main passage flow path. In this paper, the datum shroud geometry, representative of steam turbine industrial practice, was systematically varied and numerically tested.

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  • Experimental and numerical investigation of the influence ...

    To investigate the influence of the mixer diameter on ejector performance, a series of 12 measurement points was taken. Mixing sections with D MIX = 2 × 10 −3 m, D MIX = 3 × 10 −3 m, and D MIX = 5 × 10 −3 m were examined, each for the case with L MIX = 10 × D MIX, and α DIF = 5 °.

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  • Experimental investigations of the influence of mixing ...

    The experimental apparatus and procedure are described. The aim of the research was to investigate the influence of the ejector geometry on is performance. A special attention was paid to the influence of the mixing chamber length on the gas suction rate, ejector efficiency as well as on the friction loss coefficient of the mixing chamber.

    Get Price
  • Effects of Focus Geometry on the Hard Rock-Cutting ...

    Abrasive waterjets are being increasingly used in civil engineering for rock and concrete cutting, particularly for the demolition or repair of old structures. The energy of an abrasive waterjet is primarily provided by the accelerated abrasive. The momentum transfer during mixing and acceleration determines the abrasive velocity, which affects the cutting performance.

    Get Price
  • Influence of CO2 concentration on the performance of MgO ...

    This paper investigated the influence of different CO 2 concentrations on the microstructural and mechanical development of reactive MgO cement (RMC) concrete. Combination of various analyses revealed the enhancement of hydrated magnesium carbonate (HMC) phases with relatively superior micro-mechanical properties as the CO 2 concentration increased from ambient (~0.04%) to accelerated (5–20% ...

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  • The influence of molecular geometry on the efficiency of ...

    The focus is on studying the intricate role of the steric effects that influence molecular geometry, and the energy of electronic excited states on the photophysics of TADF. X-ray crystal data Fig. 2 shows the molecular structures obtained from X-ray experiments for molecules 6, 7 and 8.

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  • Effect of injector geometry on the performance of an ...

    1. Introduction. This paper describes the effect of injector geometry on the performance of an internally mixed injector. The objective of this effort is to develop a fuel injector whose spray properties could be varied in a controlled fashion to accommodate various operating conditions , .For example, it may be desirable to keep the mean droplet size constant while varying the fuel flow rate ...

    Get Price
  • Numerical investigation of the influences of mixing ...

    In studying the influence of the mixing chamber length on the performance of the steam ejector, the primary, the secondary and the back pressure are fixed at 600 kPa, 15 kPa and 40 kPa, respectively. The mixing chamber length is changed without changing the convergence angle and the outlet diameter of the mixing chamber.

    Get Price
  • A Numerical Study of the Influence of Diesel Nozzle ...

    A Numerical Study of the Influence of Diesel Nozzle Geometry on the Inner Cavitating Flow. 2002-01-0215. In order to analyze the influence of nozzle geometry on the internal flow characteristics of a Diesel injector, a CFD analysis of the flow through various nozzle geometries has been carried out with a commercial code.

    Get Price
  • Influence of MBBR carriers’ geometry on its flow ...

    The geometry of MBBR carrier, cross-section of the MBBR carrier and the exemplary geometry with boundary conditions are presented at Fig. 1 and Fig. 2. Simulations were performed with 3 different inlet velocities and 7 different angles of inclination of the carrier θ to check its influence on the velocity field.

    Get Price
  • The Influence of Shroud and Cavity Geometry on Turbine ...

    Imperfections in the turbine annulus geometry, caused by the presence of the shroud and associated cavity, have a significant influence on the aerodynamics of the main passage flow path. In this paper, the datum shroud geometry, representative of steam turbine industrial practice, was systematically varied and numerically tested.

    Get Price
  • Experimental and numerical investigation of the influence ...

    To investigate the influence of the mixer diameter on ejector performance, a series of 12 measurement points was taken. Mixing sections with D MIX = 2 × 10 −3 m, D MIX = 3 × 10 −3 m, and D MIX = 5 × 10 −3 m were examined, each for the case with L MIX = 10 × D MIX, and α DIF = 5 °.

    Get Price
  • Experimental investigations of the influence of mixing ...

    The experimental apparatus and procedure are described. The aim of the research was to investigate the influence of the ejector geometry on is performance. A special attention was paid to the influence of the mixing chamber length on the gas suction rate, ejector efficiency as well as on the friction loss coefficient of the mixing chamber.

    Get Price
  • Effects of Focus Geometry on the Hard Rock-Cutting ...

    Abrasive waterjets are being increasingly used in civil engineering for rock and concrete cutting, particularly for the demolition or repair of old structures. The energy of an abrasive waterjet is primarily provided by the accelerated abrasive. The momentum transfer during mixing and acceleration determines the abrasive velocity, which affects the cutting performance.

    Get Price
  • Influence of CO2 concentration on the performance of MgO ...

    This paper investigated the influence of different CO 2 concentrations on the microstructural and mechanical development of reactive MgO cement (RMC) concrete. Combination of various analyses revealed the enhancement of hydrated magnesium carbonate (HMC) phases with relatively superior micro-mechanical properties as the CO 2 concentration increased from ambient (~0.04%) to accelerated (5–20% ...

    Get Price
  • Influence of Film Cooling Hole Angles and Geometries on ...

    The data confirm the stated relationship between α, β, κ and the aerodynamic mixing loss. The results show that the designer should minimise κ to obtain the lowest loss, but maximise β to achieve the best heat transfer performance. A suggestion on improving the loss model is also given.

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  • Numerical and Experimental Study of Geometry Effects on ...

    Swirling flow is widely used in gas turbine burners to promote fuel/air mixing uniformity and to stabilize lean premixed flames. In this study, numerical and experimental methods are utilized to investigate the effects of burner geometry on fuel/air mixing and combustion performance and to optimize the burner geometry.

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  • Effects of Steel Fibers Geometry on the Mechanical ...

    Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete This research aims to shed light on the effect of steel fiber shape, length, diameter, and aspect ratio on the mechanical properties of slurry infiltration fiber reinforced concrete (SIFCON).

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  • Scramjet Engines: The First Forty Years

    Influence of lobe geometry on mixing and heat release characteristics of solid fuel rocket scramjet combustor Acta Astronautica, Vol. 164 Impacts of jet angle and jet-to-crossflow pressure ratio on the mixing augmentation mechanism in a shcramjet engine

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  • (PDF) Influence of Stroke on Performance Characteristics ...

    The present study experimentally demonstrates the influence of the dimensionless stoke L on the performance characteristics of a synthetic jet fan under Reynolds number Re = 1800 and the same fan ...

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  • The Effect of Bilayer Graphene Nanoribbon Geometry on ...

    The purpose of this study is to highlight the influence of BGN geometry and temperature characteristics on the performance of the schottky-barrier diode. As can be seen in Figure 6, the rectification current-voltage characteristic of the proposed diode at different values of the width is illustrated. Apparently, there is a significant rise in ...

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  • The Influence of Premixed Combustion Flame Stabilizer ...

    The ultimate objective of this work is the development of nonpremixed rapid mixing combustion systems. Different geometries of baffle flame stabilizers are tested to study the influence of recirculation zone size and number of recirculation zones on flame stability, combustion efficiency and NO x.

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  • The Influence of Inlet Port Design on the In-Cylinder ...

    A detailed investigation of the influence of intake port design on the in-cylinder flow structure during the intake and compression strokes, the mixing of the residual gas and a non-premixed intake charge, and the extent and pattern of charge inhomogenity near the time of combustion is described. Th

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  • The Performance of Air-Air Ejectors With Triangular Tabbed ...

    The performance parameters of most interest are pumping, mixing, and back-pressure. Geometric parameters studied include standoff distance, mixing-tube diameter, and tab angle. Experimental testing showed significant performance improvements in mixing and pumping with a decrease in tab angle. Maximum mixing was found to occur with tab angles ...

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  • Combined Influence of Noncondensable Gas Mass Fraction and ...

    The presence of cavitation in the oil film seriously affects the bearing lubrication performance and bearing capacity. Now the research of this phenomenon mostly focuses on the model of Reynolds equation (R-E equation) or Navier-Stokes equation (N-S), the influence of the two computation models is less analyzed, and the effect of noncondensable gas (NCG) mass fraction on the bearing ...

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  • The Influence of Inlet Geometry and Back Pressure on ...

    'The Influence of Inlet Geometry and Back Pressure on Cavitation and Noise Reduction in High Pressure Nozzles.' Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference . Emerging Technology in Fluids, Structures, and Fluid Structure Interactions: Volume 1, Fluid Dynamics and Fluid Structure Interactions .

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  • Influence of impingement edge geometry on cavity flow ...

    Influence of impingement edge geometry on cavity flow oscillations. ... Numerical investigation of flow field effects on fuel–air mixing in a non-reacting trapped vortex combustor with different injection arrangements. ... Effect of Rear Face Geometry on the Open Cavity Oscillatory Flow at M=0.9.

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  • Effects of axisymmetric sonic nozzle geometry on Mach disk ...

    Influence of nozzle geometry on the near-field structure of a highly underexpanded sonic jet Journal of Fluids and Structures, Vol. 24, No. 2 Hysteresis Phenomena of Mach Disk in Under-expanded Jet with Condensation

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

    A simple geometry jet pump was designed, developed and tested. The experiments show that we should ... mixing chamber length of 7.25 Dmix had proven superi- ority over the other two mixing chambers length of 6.75 and 7.86 Dmix. Mixing throat length ranging from 3.5 to ... Study of the Different Factors That Influence Jet Pump Performance Author:

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  • Effect of Piston Bowl Geometry on Dual Fuel Reactivity ...

    A single-cylinder light-duty diesel engine was used to investigate dual fuel reactivity controlled compression ignition (RCCI) operated with two different fuel combinations: gasoline/diesel fuel and methanol/diesel fuel. The engine was operated over a range of conditions, from 1500 to 2300 rpm and 3

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  • 'Effect of electrode geometry on high energy spark ...

    This work shows the influence of the electrode configuration on the fluid dynamics following the spark discharge and how the hot gas evolution gives rise to various physical phenomena (i.e. generation of turbulence, inducing vorticity, and gas mixing) that can be used to modify the flow-field structure near the boundary layer on an aerodynamic ...

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  • Influence of Cowl Leading Edge on Inlet Performance of ...

    Influence of inflow Mach number and outflow pressure on inlet performance was also analyzed. ... Whereas a variable-geometry inlet maximizes performance, it adds weight and complexity to the ...

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  • Selective aerobic oxidation of para-xylene in sub- and ...

    In this paper we report a strong dependence of the observed performance of the catalyst on the geometry and the …

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  • Effects of freestream turbulence on the performance ...

    Influence of inflow turbulence intensity on the performance of bare and diffuser-augmented micro wind turbine model Renewable Energy, Vol. 87 Performance of a vertical axis wind turbine in grid generated turbulence

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  • Unraveling the influence of non-fullerene acceptor ...

    Ye, L., Weng, K., Xu, J. et al. Unraveling the influence of non-fullerene acceptor molecular packing on photovoltaic performance of organic solar cells. Nat Commun 11, 6005 (2020). https://doi.org ...

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  • Influence of a Mixing-Jet on Film Cooling

    An experimental analysis of the slot film cooling performance downstream of a mixing jet has been performed. The mixing jet was blown into the main flow at a position five jet diameters downstream of the slot exit. Flow visualizations of the jet and of the cooling film are presented for blowing rates of 1 and 2 with jet momentum rates of 7 and 10.

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  • Influence of Rubber Pre-Processing on the Rheological ...

    enhance the asphalt road performance. It is also common to add small quantities of rubber, such as 1%, but also higher ... with geometry of 25 mm and a gap of of 1.0 mm for neat bitumen and 1.2 mm for crumb- ... and SBS has a positive influence on the mixing efficiency and the rheological behavior of polymer-modified bitumen

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  • Uncertainty quantification of the effects of squealer tip ...

    These geometry deviations would change the flow field near the blade tip, which will influence the thermal and aerodynamic performance. Thus, it is important to quantitatively investigate the effects of squealer tip geometry deviation on the aerothermal performance.

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  • The Influence of Swirl on the Fresh Charge Stratification ...

    The effects of the swirl level on the fresh air charge distribution is studied by using a multi-dimensional computer code for a uniflow type two-cycle diesel engine geometry. The flow is assumed to be axisymmetric. The inlet ports are simulated as an annular opening around the liner, and the exhau

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  • Selective aerobic oxidation of para-xylene in sub- and ...

    In this paper we report a strong dependence of the observed performance of the catalyst on the geometry and the …

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  • SAE MOBILUS

    “A numerical study of the influence of the diesel nozzle geometry in the injection rate characteristic” Fuel 83 4-5 419 431 2004 Singh I. Zhong L. Lai M.-C. Henein N.A. Bryzik W. “Effect of nozzle hole geometry on a HSDI diesel engine-out emissions” SAE Paper No 2003-01-0704 2003

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  • Numerical Investigation of the Influence of Specific ...

    All numerical investigations presented in this paper were carried out using a model geometry. No experimental results were available for this geometry. The validation of the code concerning film cooling mixing was presented in [15], [16], [17] and [18] (Vogel, 1994–1996).

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  • Large eddy simulation of the turbulent mixing at an ...

    In the later stage of turbulent mixing, the influence of the initial wavelength on interface deformation and turbulent mixing becomes obvious. The width of the turbulent mixing zone corresponding to the shortest wavelength condition is the largest, and the gap between the shortest wavelength condition and other conditions is obvious.

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  • Mixing and Transport in Coastal River Plumes

    Mixing and Transport in Coastal River Plumes. 1 Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195; email: [email protected] River plumes are generated by the flow of buoyant river water into the coastal ocean, where they significantly influence water properties and circulation.

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  • Influence of Device Parameters Spread on Current ...

    The novel multi-step packaging concept is proposed in order to improve the voltage sharing performance. The proposed package geometry considers optimal dielectric isolation for each device leading ...

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  • 'Moving Bed Biofilm Reactors: Evaluation of Geometry ...

    Finally, the influence of surface chemistry on biofilm attachment and performance was tested by facilitating biofilm growth on freely floating nylon and high-density polyethylene. Results indicate that organisms grown on more protected, sheltered carrier media respond to changes in mixing more rapidly than those on open and exposed media design.

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  • (PDF) Vessel Geometry and Fluid Properties Influencing Mix ...

    In Fig. 1(a), a diagram of the mixing mechanism is shown. Here, acoustic mixing employs a longitudinal pressure …

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  • Why Structural Fiber is the Smart Choice for Thin Concrete ...

    Therefore, consideration of fiber geometry and stiffness when choosing fibers for concrete overlays often becomes an economic choice, where the designer must balance cost, workability, and performance. Regarding the influence of the material on the residual strength, steel fibers often outperformed synthetic fibers by a significant margin.

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  • The Influence of Electrode and Channel Configurations on ...

    The PFF cell is an exception that shows much lower performance. A single polarization curve at 120 mL/min is shown at the bottom of Figure 6. The poor performance of the PFF cell can be attributed to low rates of vanadium transfer to the fibers in the electrode in the absence of forced convection.

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  • Influence of Laser Power and Scanning Speed on the ...

    One of the well-known methods for increasing wear resistance, especially for friction pairs, is surfacing wear-resistant materials on the working surfaces of mating parts [1, 2, 3]. Less expensive grades of steel can be used as the main material in the manufacture of parts, and the surfacing materials in this case must have increased characteristics: mechanical, corrosion and radiation ...

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  • Influence of cellulose nanocrystals on the rheological ...

    Influence of cellulose nanocrystals on the rheological behaviour of Portland cement and pure limestone suspensions Fábio A. Cardoso1,2,*, Pedro C.R.A. Abrão1,2, Beatriz R. da Silva1,2, Germano A. Siqueira3, and Vanderley M. John1,2 1National Institute on Advanced Eco-efficient Cement-based Technologies

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  • Aerobic oxidation of benzyl alcohol in a slug flow ...

    3.5.2 Influence of wetted and dewetted slug flows. To further elucidate the influence of the slug flow profile on the reaction performance…

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  • Veerle BOEL

    Ultra-high performance concrete is an important evolution in concrete technology, enabled by the combination of a good particle packing density, a suitable mixing …

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  • Influence of turbulent fluctuations on detonation ...

    Instead, these pockets mix and burn, on their surfaces, along turbulent shear layers. Owing to shock compression associated with the passage of transverse shock waves, these shear layers experience increased burning rates through turbulent mixing of the burned and unburned gases via Richtmyer–Meshkov instability.

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  • Frontiers

    Congenital heart disease is the most common birth defect and functionally univentricular heart defects represent the most severe end of this spectrum. The Fontan circulation provides an unique solution for single ventricle patients, by connecting both caval veins directly to the pulmonary arteries. As a result, the pulmonary circulation in Fontan palliated patients is characterized by a ...

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