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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance

    '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 ...

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  • EFFECT OF NOZZLE GEOMETRY ON THE EFFICIENCY OF

    2020-4-22 · 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 details of the flow patterns are influenced by the geometry of the nozzle. This

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  • Circulatory Jet Flow - ResearchGate

    1.5 mm. In the working chamber, the flow is shaped into jet form by a jet-forming nozzle in accordance with the geometry of the chamber (Figure 2). To validate the flow characteristics, in each ...

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  • A Century of Ramjet Propulsion Technology Evolution

    2021-2-27 · and exhaust nozzle (Fig. 1). The inlet collects and compresses air and conducts it via the diffuser to the combustor at reduced velocity thereby developing ram pressure and an elevated temperature. The combustor adds heat and mass to the compressed air by the injection and burning of fuel. Finally, the nozzle converts some of the energy

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  • Single-Phase Heat Transfer and Fluid Flow Phenomena of ...

    This paper presents a comprehensive review on subsea jet trenching technology via a critical analysis of its principle, mechanism, devices, modeling approaches, as well as properties of subsea sediments. This review shows that the success of jet trenching operations is closely related to some key factors including the soil conditions, trencher specifications, and characteristics of pipelines ...

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  • THRUST VECTORING NOZZLE FOR MILITARY AIRCRAFT

    For each of these 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% less mass flow ...

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

    2013-1-3 · Nozzles. The ITP Nozzle is a 3-D Vectoring Nozzle. Also, there are different ways to achieve the deflection of the gas jet: the most efficient one is by mechanically deflecting the divergent section only, hence minimizing the effect on the engine upstream of the throat (sonic) section. The ITP concept consists of a patented design featuring

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  • FLUID FLOW AND HEAT TRANSFER OF AN IMPINGING

    2011-5-31 · The same air canbe routed to a perforated internal wall to form ... The jet emerges from a nozzle or opening with a velocity and temperature profile and turbulence characteristics dependent upon the upstream flow. For a pipe-shaped nozzle, also called a tube nozzle ... effect of the wall upstream. The nonuniform turning flow experiences high

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  • Mixing Process in a Lobed Jet Flow - Iowa State University

    2007-10-31 · 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

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  • Ansys Nozzle Jet - cdn.app.jackwills.com

    2004-7-27 · the lobed nozzle break into smaller but not weaker streamwise vortices as they travel downstream. This is the proposed reason why a lobed nozzle would enhance both large-scale mixing and small-scale mixing reported by other researchers. The overall effect of the lobed nozzle on the mixing process was evaluated by analyzing the

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  • A review on nozzle wear in abrasive water jet machining ...

    2021-7-31 · nozzle geometry and size nozzle configuration location of exhaust ports nozzle to target spacing surface motion and operating variables such as cross flow and jet axis velocity complicate the analysis Noise Reduction in Jet Engine using Chevron Nozzle May 15th, 2019 - conventional nozzles with minimal impact on performance In this project work ...

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  • A Century of Ramjet Propulsion Technology Evolution

    2018-10-24 · 3. Results and Discussion. To investigate the effect of initial Re on the jet development, four simulations with different nozzle diameters D j = 0.0012, 0.0015, 0.0018, and 0.0021 m were run with grid 2 based on the grid study results. With the same initial mass flow rate 0.031 kg/s as in the PIV measurement by Larsson et al. [], the jet initial velocities are U j = 27.70, 17.73, 12.31, and 9 ...

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  • (PDF) Concentric mixing of hardwood pulp and water ...

    The purpose of the mixing operation is to obtain a uniform species concentration within a short pipe distance from the jet nozzle. As shown in Fig. 1, the jet issuing from the center pipe may be divided into two regions, the potential core region and the entrainment or mixing region.

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  • Sustainability | Free Full-Text | Assessment of Microalgae ...

    Notwithstanding the substantial progress acheved since 2010 in the attempts to realize the potential of microalgae biofuels in the transportation sector, the prospects for commercial production of CO2-neutral biofuels are more challenging today than they were in 2010. Pure P. moriformis microalgae oil was subjected to unmodified engine performance testing as a less investigated type of fuel.

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  • Aero-thermodynamic and chemical process interactions in

    2018-5-21 · We also shed light on the effect of three-dimensional blade profile, radial spacing, and rotor speed on the performance of a high-pressure turbine. We highlight that flow vortex and the variation of chemical formation which appear in both rear stator blades and rear rotor blades.

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  • YF-23 The World's Only INVISIBLE airplane | Page 2 ...

    2014-12-26 · The Actual YF-23 is a Classic Fourth Generation Design of Stealth. The SR-71 was the first generation, F117 the second and the B-2 Spirit the Third Generation. The Black Widow II has some characteristics as the Lockheed SR-71, with long chines extending from the Nose cone backwards just like the SR-71 has.

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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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  • Plant Engineering & Construction Division

    2014-10-8 · Effect of lBr & Off line methodology raw Material Handling Facilities Specialized in technology of large-scale Blast Furnace & Sinter Plant, which provides high productivity & availability with low operating cost to the clients. One million dollars can be saved …

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  • Recent Publications - IIT Kanpur

    Manisha B. P. and D. P. Mishra, Effect of Air Injection Configuration on the atomization of gelled JetA1 fuel in an air-assist internally mixed atomizer, Atomization and …

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  • Publications - Continuous Casting Consortium - U of I

    2021-7-13 · Bai, H. and B. G. Thomas, “Effect of Clogging, Argon Injection and Casting Conditions on Flow Rate and Air Aspiration in Submerged Entry Nozzles,” Proceedings of the 59th Ironmaking Conference, Pittsburgh, PA, March 26-29, 2000; 83, 183-197, Iron and Steel Society, Warrendale, PA, 2000. Click here for a PDF version. (1.41 MB)

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  • Numerical investigation of truncated-root rib on heat ...

    2021-7-7 · Due to the great heat obtained from the combustion chamber, the turbine blades of a jet engine always operate at high temperatures. Therefore, …

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  • Rocket Nozzle Design with Ejector Effect Potential

    2007-11-13 · potential for incorporating the ejector effect. The nozzle is designed such that the diverging portion of the nozzle geometry must pass through a gate that is placed on the outer perime-ter whose shape does not have to remain axisymmetric, thus creating a void for air intake into the centre of an annular rocket exhaust stream.

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  • DESIGN AND CFD ANALYSIS OF CONVERGENT AND

    2017-9-25 · used nozzle since in using it the propellant can be heated incombustion chamber. In this project we designed a new Tri-nozzle to increase the velocity of fluids flowing through it. It is designed based on basic convergent-Divergent nozzle to have same throat area, length, convergent angle and divergent

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  • 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).

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  • Flow Visualization Studies of VTOL Aircraft Models

    2018-8-15 · jet-powered vertical takeoff and landing (VTOL) model during hover in ground effect was conducted. A surface oil flow technique was used to observe the flow patterns on the lower surfaces of the model. Wing height with respect to fuselage and nozzle pressure ratio are seen to have a strong effect on the wing trailing edge flow angles.

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  • CRN Application to Predict the NOx Emissions for ...

    2015-11-13 · CRN Application to Predict the NOx Emissions for Industrial Combustion Chamber Nguyen Thanh Hao 1 and Park Jungkyu2 1Industrial University of HoChiMinh City, 12, NguyenVanBao, GoVap, HoChiMinh, Vietnam 2Depatment of Mechanical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul, Korea Email: [email protected] (Received on 15 March 2013 and …

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  • [PDF] Enhancing the stability limits of a low swirl non ...

    Corpus ID: 108288098. Enhancing the stability limits of a low swirl non-premixed turbulent flame @inproceedings{Saediamiri2015EnhancingTS, title={Enhancing the stability limits of a low swirl non-premixed turbulent flame}, author={M. Saediamiri and M. Birouk and J. Kozinski}, year={2015} }

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  • [Solved] The absolute jet exit velocity from a jet engine ...

    The absolute jet exit velocity from a jet engine is 2800 m/s and the forward flight velocity is 1400 m/s. The propulsive efficiency is ... The air-fuel ratio for a gas turbine is generally kept closer to. Q3. ... Shock effect in a nozzle is felt in. Q40.

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  • CFD Analysis of Single and Multiphase Flow Characteristics ...

    Computational fluid dynamics (CFD) analysis of single- phase and two-phase flow was performed in a 90 degree horizontal to vertical elbow with 12.7 mm inside diameter. Characteristic flow behavior was investigated at six different upstream and downstream locations of the elbow. To evaluate the effects of different phases, three different air veloci-ties and three different water velocities ...

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  • Saiful Hafidz: Impact of jet

    2016-11-26 · The TecQuipment Impact of a jet (H8) fits onto either of the TecQuipment’s Hydraulic Benches. It allows students to experiment with the force generated by a jet of water as it strikes a vane in the shape of a flat plate or hemispherical cup, and to compare it with the momentum flow rate in the jet.

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