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Relevant bibliographies by topics / Ejector and vortex air supply

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Journal articles
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Conference papers

Academic literature on the topic 'Ejector and vortex air supply'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Ejector and vortex air supply"

1

Yakimushkin, R. V. "VORTEX DEVICES OF THE DIESEL AIR SUPPLY SYSTEM: MATHEMATICAL MODEL OF AERODYNAMIC PROCESSES." Russian Automobile and Highway Industry Journal 17, no. 1 (2020): 110–20. http://dx.doi.org/10.26518/2071-7296-2020-17-1-110-120.

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Introduction. The calculation of effective indicators of the vortex ejector used in the diesel air supply system is a pressing task as it allows significantly reducing time for determination of rational design parameters at the design stage. One of the modifications of the particle dynamics method is a promising direction, allowing with high physical adequacy, “from the first principles,” to model aerodynamic processes in vortex devices. Therefore, the purpose of the paper is to develop a mathematical model of a vortex ejector.Materials and methods. The paper discussed a method of the mathemat

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Prokhorov, V. B., V. S. Kirichkov, S. L. Chernov, A. A. Kaverin, and N. E. Fomenko. "Investigation of the direct-flow jets vortex motion in the M-shaped boiler invert furnace." Journal of Physics: Conference Series 2088, no. 1 (2021): 012036. http://dx.doi.org/10.1088/1742-6596/2088/1/012036.

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Abstract For advanced ultra-supercritical parameters (A-USC) of steam, the design of an M-shaped boiler is proposed, designed to operate in a 500 MW unit on a lean coal (grade TR). The boiler profile is selected from the condition of minimizing the length of the main steamlines made of expensive nickel-alloy steel. With regard to this boiler, a scheme has been developed for pulverized coal combustion in an invert furnace using direct-flow burners and nozzles. Research has been carried out on the physical model of the furnace in the implementation of this combustion scheme: a qualitative study

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Prokhorov, V. B., V. S. Kirichkov, S. L. Chernov, and N. E. Fomenko. "The Coal Dust Combustion Scheme for an Invert Furnace of an A-USC M-Shaped Boiler." Problems of the Regional Energetics, no. 3(55) (August 2022): 38–53. http://dx.doi.org/10.52254/1857-0070.2022.3-55.04.

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The M-shaped boiler construction for the advanced ultrasupercritical steam parameters (A-USC) is proposed in this work. The boiler was designed to operate in a 500 MW unit on low volatile hard coal. This design allows reducing the pipelines length of the high cost steam pipelines made of nickel alloys. A downstream (invert) furnace is offered for this boiler type. The coal dust burning scheme design using the direct-flow burners and nozzles in a system of vertical and horizontal tangential torches and the solid ash removal are proposed. This approach was extensively used earlier on standard sh

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Samokhvalov, V. N., D. G. Chernikov, and R. Yu Yusupov. "AIR CHANNEL COOLING OF ONE-TURN INDUCTOR FOR ELECTROMAGNETIC METAL FORMING." Izvestiya of Samara Scientific Center of the Russian Academy of Sciences 25, no. 3 (2023): 64–71. http://dx.doi.org/10.37313/1990-5378-2023-25-3-64-71.

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This paper evaluates the efficiency of cooling a coil, fitted with an internal channel, for a one-turn inductor for electromagnetic metal forming, using a low-temperature air from a vortex tube, with and without an ejector. The experiment data shows that at constant pressure on the vortex tube entrance the highest cooling efficiency and intensity are reached at values β>1, where β is an ejector diaphragm to nozzle section area relation. The results show that air channel cooling of a coil for a one-turn inductor using air from vortex tube has considerably high efficiency and high safety para

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Rogovyi, Andrii, Artem Neskorozhenyi, Yevhen Timchenko, Viktoriia Andriievska, and Mykola Yaroshenko. "DEPENDENCE OF THE EFFICIENCY OF A VORTEX CHAMBER EJECTOR ON ITS GEOMETRIC PARAMETERS." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 29, 2024): 13–19. https://doi.org/10.20998/2411-3441.2024.1.02.

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The wear and decreased efficiency of superchargers with moving impellers make using jet devices in many technological processes advisable. Using the properties of swirling flows, such as reduced axial pressure, has created vortex ejectors. Still, their energy performance and efficiency are reduced compared to classical direct-flow jet pumps and ejectors. The solution to this problem may be the use of more advanced energy transfer principles and technical solutions in the design of vortex chamber-based jet superchargers. Such superchargers are vortex chamber superchargers, which, due to the use

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Ihnatiev, Oleksandr, Hanna Shevelova, Hennadii Strelnykov, and Borys Blyuss. "Numerical study of parameters of unit for supplying additional gas flow in jet mill ejector." IOP Conference Series: Earth and Environmental Science 1156, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1755-1315/1156/1/012018.

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Abstract We have carried out numerical simulation of the flow in the jet mill ejector. The features of ejector are an annular unit for supplying an additional gas flow in the form of a confuser section at the inlet to the accelerating tube, as well as a confuser at the outlet of the accelerating tube. In the course of the study, we have varied the length of the confuser section at the inlet and the angle of an additional gas flow supply. We have established the optimal parameters of the unit for supplying an additional gas flow in the ejector, at which it has been the most uniform distribution

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Liu, Jing Shi, Ya Zhou Sun, Li Hua Lu, and Ying Chun Liang. "Factors Effect on Vortex Torque of Aerostatic Bearings." Advanced Materials Research 97-101 (March 2010): 3745–48. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3745.

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In order to improve the drift accuracy of aerostatic bearings, the air supply pressure and manufacturing errors effect on vortex torque of aerostatic bearings were studied by using the finite element method. This paper analyzed the influence of air supply pressure on vortex torque, in view of elliptical error, incline error of throttle slit and radial eccentricity ratio exist. The quadratic regression orthogonal design was adopted to establish function expression of vortex torque among air supply pressure, elliptical error, incline error of throttle slit and radial eccentricity ratio. In resea

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Satoh, Daisuke, Shuji Tanaka, Kazushi Yoshida, and Masayoshi Esashi. "Micro-ejector to supply fuel–air mixture to a micro-combustor." Sensors and Actuators A: Physical 119, no. 2 (2005): 528–36. http://dx.doi.org/10.1016/j.sna.2004.10.028.

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Kurochkin, A. A., and D. I. Frolov. "SUBSTANTIATION OF AERODYNAMIC PARAMETERS OF THERMAL VACUUM EXTRUDER EJECTOR." Vestnik of Ulyanovsk state agricultural academy 230 (September 25, 2021): 12–18. http://dx.doi.org/10.18286/1816-4501-2021-3-12-18.

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The article describes a new structural and technological scheme of a thermal vacuum extruder, where chambers for preliminary and final dehydration of the finished product interact with each other by means of an ejector. The steam pumped out of the final dehydration chamber by means of a vacuum pump moves to the high-pressure part of the ejector and is removed outside for regeneration of the thermal energy spent on machine technological process. Simultaneously, this air flow ensures the steam movement from preliminary dehydration chamber of the extruder to the low-pressure part of the ejector.

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Yurchenko, Nina, and Pavlo Vynogradskyy. "Experimental optimization of the ejector design developed for a driver’s airbag." Mechanics and Advanced Technologies 6, no. 1 (2022): 79–84. http://dx.doi.org/10.20535/2521-1943.2022.6.1.260933.

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Design modifications are tested experimentally of the compact supersonic ejector developed for the novel airbag inflation system. The base design resulting from combined numerical and experimental investigations showed itself potentially capable of inflating the 50 L airbag with three parts of entrained air volume together with one part produced by a gas generator. The base design work continues to study its technological flexibility and operational reliability by analyzing a complex flow structure within the inflator. For that, minor changes and supplements to the design were evaluated experi

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Dissertations / Theses on the topic "Ejector and vortex air supply"

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Beyer, Uwe. "Use of vane and air jet vortex generators in a thrust augmenting ejector." Thesis, City University London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333864.

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Гарбуз, С. В. "Підвищення екологічної безпеки процесу вентиляції резервуарів з нафтопродуктами". Thesis, Національний університет цивільного захисту України, 2018. http://essuir.sumdu.edu.ua/handle/123456789/68005.

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Дисертація присвячена підвищенню рівня екологічної безпеки за рахунок розроблення технології примусової вентиляції резервуарів для зберігання нафтопродуктів, що реалізується інноваційним ежекторно-вихровим способом подання повітря, та абсорбційно-конденсаційної технології уловлення парів летких вуглеводнів, що забезпечує додержання нормативів шкідливого впливу на атмосферне повітря й одержання додаткового еколого-економічного ефекту шляхом використання їх як товарної продукції. Розроблений екологічно безпечний спосіб дегазації наземних резервуарів для зберігання світлих нафтопродуктів, що дозв

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Silva, Oseas Carlos da. "Refrigerating System By Rank-Hilsch Tubes With Supply of Compressed Air Tank to Power With PV Source." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13476.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>A busca por novos sistemas de refrigeraÃÃo vem se tornando o alvo de estudo de diversos pesquisadores, com o objetivo de diminuir impactos ambientais referentes Ã destruiÃÃo da camada de ozÃnio e efeito estufa que trazem consigo diversos malefÃcios Ã vida no planeta. Sistemas de refrigeraÃÃo convencionais respondem por boa parte do consumo de energia elÃtrica de uma residÃncia ou uma empresa (de 20 ou atÃ 25%), e sÃo normalmente ligados durante o dia , quando a demanda Ã maior e as tarifas mais caras. Dispositivos de refrigeraÃÃo sÃ

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Conference papers on the topic "Ejector and vortex air supply"

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Kulyukhin, S. A., N. B. Mikheev, L. N. Falkovskii, et al. "New Approach for Environmental Protection During Severe Accidents at Nuclear Power Plants." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75518.

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This paper reports new approaches for increasing environmental protection during severe accidents at NPPs. For NPPs with two protective shells and pressure release system such as WWER-1000 we suggest a new comprehensive, passive-mode environmental protection system of decontamination of the radioactive air-steam mixture from the containment and the intercontainment area, which includes the “wet” stage (scrubbers, etc.), the “dry” stage (sorption module), and also an ejector, which in a passive mode is capable of solving the multi-purpose task of decontamination of the air-steam mixture. For Ru

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2

Bohn, Dieter E., and Christian Tu¨mmers. "Numerical Investigation of Anisotropic Turbulence Effects Around a Film Cooled Turbine Vane." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30599.

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In this paper the 3D flow around a turbine vane with showerhead cooling is simulated with the anisotropic cubic-eddy-viscosity k-ε turbulence model of Craft et. al. The results are analyzed in detail and compared to calculations performed with the isotropic algebraic turbulence model by Baldwin & Lomax and the isotropic Low-Reynolds k-ε-model of Launder et. al. for the same test case. The computational domain consists of the coolant supply (plenum), the ejection holes and the main flow region around the vane. Periodic boundary conditions have been used in the radial direction. Thus, endwal

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3

Woopen, Michael, Axel Dannhauer, and Peter-Anton Gieß. "Reducing the Demand of Coolant at the Sidewall of a High Pressure Turbine Cascade by Means of Slot Width Modulation." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68325.

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Within the framework of the German research project AG-Turbo the influence of slot flows associated with cooling configurations were investigated experimentally. One interesting result of this work was the severe enhancement of the horse shoe vortex by the coolant dependent on the slot’s position and the ejected mass. Based on these results, further promising film cooling configurations with slot ejection were investigated numerically. Setting up the numerical studies was a challenging task since a very detailed model of the slot, the supply cavity, and the supply tubes had to be generated. Te

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Kusterer, Karsten, Anas Elyas, Dieter Bohn, Takao Sugimoto, Ryozo Tanaka, and Masahide Kazari. "The NEKOMIMI Cooling Technology: Cooling Holes With Ears for High-Efficient Film Cooling." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45524.

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Further improvement of the thermal efficiency of modern gas turbines can be achieved by a further reduction of the cooling air amount. Therefore, it is necessary to increase the cooling effectiveness, so that the available cooling air fulfils the cooling task even if the amount has been reduced. Due to experimental and numerical efforts, it is well understood today that aerodynamic mixing processes are enhanced by counter-rotating vortices (CRV) in the cooling jets and lead to jet lift-off effects. Thus, the film-cooling effectiveness is reduced soon behind the cooling air ejection through the

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Nguyen, Quan Q., Duoc V. Phung, Kien T. Nguyen, et al. "An Approach to Design an Air–Liquid Supersonic Ejector for Producing Aerosol Spray." In Automotive Technical Papers. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-5068.

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<div class="section abstract"><div class="htmlview paragraph">This study aims to design a supersonic ejector, referred to as a liquid spray gun, with a simple operating procedure for producing an aerosol spray with adjustable droplet size distributions. A CFD model was developed to determine the influence of nozzle exit position and the primary air pressure on the supersonic patterns formed within the ejectors, providing a valuable insight into their internal physics. Based on the single-phase numerical results, at an air primary pressure of 2 bar, the flow may not reach a choking

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Brehm, Sebastian, Felix Kern, Jonas Raub, and Reinhard Niehuis. "An Approach for Efficient CFD Simulations of an Ejector Air Injection System for Active Aerodynamic Compressor Stabilization." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64660.

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The Institute of Jet Propulsion at the University of the German Federal Armed Forces Munich has developed and patented a novel concept of air injection systems for active aerodynamic stabilization of turbo compressors. This so-called Ejector Injection System (EIS) utilizes the ejector effect to enhance efficiency and impact of the aerodynamic stabilization of the Larzac 04 two-spool turbofan engine’s LPC. The EIS design manufactured recently has been subject to CFD and experimental pre-investigations in which the expected ejector effect performance has been proven and the CFD set-up has been v

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Lee, Yang Ji, Sang Hun Kang, and Soo Seok Yang. "Study for Starting Characteristics of Scramjet Engine Test Facility (SETF)." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87193.

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Korea Aerospace Research Institute started on design and development of a hypersonic air-breathing engine test facility from 2000 and completed the test facility installation in July 2009. This facility, designated as the Scramjet engine test facility (SETF), is a blow-down type high enthalpy wind tunnel which has a pressurized air supply system, air heater system, free-jet type test chamber, fuel supply system, facility control/measurement system, and exhaust system with an air ejection. Unlike most aerodynamic wind-tunnel, SETF should simulate the enthalpy condition at a flight condition. To

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Tanaka, S., and Z. Spakovszky. "A Thermal Mixing Scheme for Portable Gas Turbines." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22530.

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To meet the increasing demand for advanced portable power units, for example for use in personal electronics and robotics, a number of studies have recently focused on small gas turbine units in the 500 W to 1 kW range. The majority of the work to date is concerned with the design of efficient high-speed rotating machinery and electric components. An important aspect, especially critical for portable operation, is the cooling of the gas turbine and the exhaust gas. This is the focus of the present paper. The compact and small-scale architecture of such gas turbine engines poses major challenge

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Lee, Yu-Tai, Vineet Ahuja, Ashvin Hosangadi, et al. "Investigation of an Air Supply Centrifugal Fan for Air Cushion Vehicle: Impeller Design and Validation." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50376.

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A design method is presented for re-designing the double-discharge, double-width, double-inlet (DWDI) centrifugal impeller for the lift fans of a hovercraft. Given the current high performance of impellers, the design strategy uses a computational method, which is capable of predicting flow separation and vortex-dominated flow fields, enabling a detailed comparison of all aerodynamic losses. The design method, assuming a weak interaction between the impeller and the volute, employs a blade optimization procedure and several effective flow path modifications. Simplified CFD calculations were pe

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Chen, Xiao, Ye Feng, and Lijun Wu. "The Experimental Investigations of Centripetal Air Bleed With Tubed Vortex Reducer for Secondary Air System in Gas Turbine." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26959.

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In a modern gas turbine, the air bled through High Pressure Compressor (HPC) rotor drums from the main flow is transported radially inwards and then transferred to cool the High Pressure Turbine (HPT). The centripetal air flow creates a strong vortex, which results in huge pressure losses. This not only restricts the mass flow rate, but also reduces the cooling air pressure for down-stream hot components. Adding vortex reducer tubes to the centripetal air bleed can reduce the pressure loss and ensure the pressure and mass flow rate of the supply air. Design optimization of the tubed vortex red

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