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

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Ihnatiev, O. D., and H. M. Shevelova. "Numerical simulation of a two-phase flow in a jet mill ejector with an additional energy supply." Technical mechanics 2023, no. 4 (2023): 104–14. http://dx.doi.org/10.15407/itm2023.04.104.

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New approaches to the preparation and processing of raw materials in the process of jet grinding are gaining more and more importance. This is due to the need to increase the efficiency of grinding and reduce the energy consumption of the equipment, increase its reliability and service life, and expand the possibility of using the jet mill in various industries. All this determines the importance of developing and implementing new approaches to two-phase flow organization in the channels of a jet mill. The goal of this work is to investigate a method for improving two-phase flow organization i

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12

Safarik, Pavel, Aliya Askarova, Saltanat Bolegenova, Valeriy Maximov, Symbat Bolegenova, and Aizhan Nugymanova. "3-D modelling of heat and mass transfer during combustion of low-grade coal." Thermal Science 24, no. 5 Part A (2020): 2823–32. http://dx.doi.org/10.2298/tsci191107062s.

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Using numerical methods, the basic characteristics of heat and mass transfer processes in the furnace chamber of the BKZ-75 boiler of the Shakhtinskaya TPP (Kazakhstan) were studied during a forced partial stop of the supply of coal dust through the burners. Two modes of fuel supply were studied; a direct-flow method of supplying air mixtures, when two direct-flow burners are working and two are in emergency mode and vortex method of supplying air mixtures - two vortex burners with a swirl angle of the air mixture flow and their inclination the center of symmetry of the boiler by 30? and two a

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13

Zaitsev, O. N., K. I. Logachev, and A. B. Gol’tsov. "Increasing the rate of capture of pollutants by local suction due to the use of an external swirling jet. Part 1. Research methods." NOVYE OGNEUPORY (NEW REFRACTORIES) 1, no. 6 (2022): 40–45. http://dx.doi.org/10.17073/1683-4518-2022-6-40-45.

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To capture pollutants in many buildings and structures, it is necessary to use local suction systems. One of the criteria for the effectiveness of local suction ― the rate of capture of pollutants ― it is proposed to increase due to the impact of a swirling annular jet and the occurrence of a reverse air flow. The circular suction is placed coaxially in an external cylindrical casing, in which the air flow is twisted due to the tangential supply of two supply jets into the casing. A vortex dome is formed, which helps to increase the efficiency of such a vortex suction. The change in the axial

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14

Ma, Wen Qi, Li Fang Xu, and He Chun Yu. "Structural Optimization of Non-Contact Vortex Negative Pressure Carrier." Advanced Materials Research 97-101 (March 2010): 3219–24. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3219.

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Simulation models based on the different structural levitation vortexes were built, the analysis on the flow characteristics of pressure distribution and bearing capacity was conducted by using the RNG κ-ε turbulent model and non-uniform meshing in variable working conditions. At last, the influence factors and variation rules of vortex adsorption negative pressure effect were obtained. The theory and the experiment results indicate that the vortex carrier with symmetrical tangential air supply has the optimal stability, but the optimal negative pressure effect and the great lifting force are

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15

Borowski, Marek, Marek Jaszczur, Daniel Satoła, and Michał Karch. "Air flow characteristics of a room with air vortex diffuser." MATEC Web of Conferences 240 (2018): 02002. http://dx.doi.org/10.1051/matecconf/201824002002.

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The air diffuser is a very important component of any ventilation system, and the comfort level of ventilated space occupants depend among many other factors on properly designed and choice of diffusers. At present a large number of diffusers are produced to meet a different kind of requirements. One of the most efficient and very popular types of the diffuser is the vortex diffuser in which air flow has angular as well as translational velocity components. This paper investigates experimentally airflow characteristics of vortex ceiling diffuser and its effect on airflow in a ventilated space.

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16

Radchenko, Andrii, Mykola Radchenko, Dariusz Mikielewicz, Anatoliy Pavlenko, Roman Radchenko, and Serhiy Forduy. "Energy Saving in Trigeneration Plant for Food Industries." Energies 15, no. 3 (2022): 1163. http://dx.doi.org/10.3390/en15031163.

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The trigeneration plants for combined cooling, heating, and electricity supply, or integrated energy systems (IES), are mostly based on gas reciprocating engines. The fuel efficiency of gas reciprocating engines depends essentially on air intake temperatures. The transformation of the heat removed from the combustion engines into refrigeration is generally conducted by absorption lithium-bromide chillers (ACh). The peculiarity of refrigeration generation in food technologies is the use of chilled water of about 12 °C instead of 7 °C as the most typical for ACh. This leads to a considerable coo

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17

Basri, Muhammad Hasan, Rahmat Rizky, Alfin Febrianto, et al. "Pemanfaatan Saluran Irigasi sebagai Pembangkit Listrik Tenaga Air (VORTEX) untuk Daerah Tidak Terdampak Pasokan Listrik PLN." GUYUB: Journal of Community Engagement 2, no. 1 (2021): 12–25. http://dx.doi.org/10.33650/guyub.v2i1.1907.

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Duren village, ivory sub-district, located in the mountainous area south of Probolinggo Regency, is one of the mountainous villages that has limited electricity supply or has not yet received electricity supply from PLN. Because they have not yet received electricity supply from PLN, the local community uses the irrigation channel as a vortex power plant. Where the area of Duren village is very possible to make a vortex power plant because the irrigation canal is very suitable as a manufacturing location. With the existence of a whirlpool (vortex) power plant, it can alleviate the community of

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18

Wang, Di, Yuanqing Gao, Xuejin Wang, Miaoqing Zhang, and Yufang Cui. "Multi Heat Source Collaborative Heating Scheme and CFD Assisted Air Distribution Design for a Large-Space Factory Building." Journal of Engineering System 1, no. 4 (2023): 5–11. http://dx.doi.org/10.62517/jes.202302402.

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With the increase in the number of large space buildings, especially those far away from the centralized Heat-supply network, how to design the indoor heat and humidity environment under the dual-carbon national strategy has become a matter of concern. This article focuses on a large space warehousing and logistics building in Harbin Logistics Park. Based on the calculation and analysis of typical annual heating and cooling load data, combined with the location of the building and the combination of cold and heat sources, air-cooled heat pump units are selected for annual cooling. CFD simulati

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19

Zolotko, Olena, Oleksandr Zolotko, Oleksandr Aksonov, Vitalii Stoliarchuk та Oleksandr Cherniavskyi. "Аналіз характеристик ежекторного режиму імпульсно-детонаційної двигунної установки комбінованого циклу прискорення". Aerospace Technic and Technology, № 6 (21 листопада 2024): 52–59. https://doi.org/10.32620/aktt.2024.6.05.

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The subjects of this article are processes in the chamber of the pulse detonation propulsion system of the combined acceleration cycle (PSCA). The goal is to identify the most significant factors and study their influence on the defining characteristics of the ejector mode of operation of the pulse detonation PSCA. The task: to consider promising concepts of multi-mode engines and to investigate the influence of the mode parameters and design factors on the coefficient of increase of the thrust-specific impulse and the coefficient of increase of the thrust of the ejector. Methods of problem so

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20

Ponomarenko, Serhii, Іryna Potapchuk, Oleksandr Zhevzhyk, Liudmyla Kabakova, and Anna Potapchuk. "Influence of the leakage in air supply networks on the efficiency of application of pneumatic backfill equipment." Mining of Mineral Deposits 17, no. 4 (2023): 83–92. http://dx.doi.org/10.33271/mining17.04.083.

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Purpose. Determining the influence of the degree of pneumatic energy losses in the non-hermetic air supply network on the efficiency of using installed equipment in the pneumatic method of waste utilization from mining and beneficiation of minerals. To achieve this purpose, a tightness control device was developed using the method of fixed volumes. Methods. Using the molecular-kinetic theory of gases, the thermodynamics and hydrodynamics laws, the characteristics of an open thermodynamic system under excess pressure and with a degree of a capillary-type leakage are investigated. Pneumatic ener

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21

Li, Yiqiao, Hao Huang, Shengqiang Shen, Yali Guo, Yong Yang, and Siyuan Liu. "Application Advances and Prospects of Ejector Technologies in the Field of Rail Transit Driven by Energy Conservation and Energy Transition." Energies 18, no. 15 (2025): 3951. https://doi.org/10.3390/en18153951.

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Rail transit as a high-energy consumption field urgently requires the adoption of clean energy innovations to reduce energy consumption and accelerate the transition to new energy applications. As an energy-saving fluid machinery, the ejector exhibits significant application potential and academic value within this field. This paper reviewed the recent advances, technical challenges, research hotspots, and future development directions of ejector applications in rail transit, aiming to address gaps in existing reviews. (1) In waste heat recovery, exhaust heat is utilized for propulsion in vehi

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22

Paride, Gullo. "Novel flow modulation method for R744 two-phase ejectors – Proof of concept, optimization and first experimental results." Energy Conversion and Management 237 (June 1, 2021): 114082. https://doi.org/10.1016/j.enconman.2021.114082.

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The cooling industry involves various essential applications, such as food preservation, medicine storage and air conditioning. However, its significant direct and indirect contribution to global warming is bound to increase in years to come, leading to the need for highly efficient cooling units using eco-friendly working fluids. Consequently, carbon dioxide (R744) is achieving resounding success as a refrigerant for various medium- and large-capacity applications, as some of the available expansion work is recovered with the aid of two-phase ejectors. However, its adoption is being limited f

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23

Li, Zijie, and Hao Wang. "Comparison of the Flow Fields between Nozzles with Full-Open and Open-Close Valves at Transonic Velocity." Journal of Applied Mathematics 2022 (November 30, 2022): 1–11. http://dx.doi.org/10.1155/2022/6875240.

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At transonic velocity, ejector nozzles require third auxiliary intake valves to increase air intake, resulting in good thrust performance. However, different intake structures will inevitably lead to different internal flow-field structures and thrust performances. To evaluate the differences between nozzles with full-open valve and open-close valve at transonic velocity, we established two numerical simulation models to analyze the flow-field structure and thrust performance in the ejector nozzle. The results show that at the transonic flight state ( Ma = 1.2 ), the mainstream of the two mode

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24

Sharapov, Serhii, Sviatoslav Yevtushenko, Vitalii Panchenko, Viktor Kozin, and Oleksandr Ivchenko. "Improving the efficiency of condensation installations of steam turbines by applying liquid-vapor ejector." Eastern-European Journal of Enterprise Technologies 4, no. 8 (118) (2022): 44–51. http://dx.doi.org/10.15587/1729-4061.2022.263331.

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This paper considers the possibility of using liquid-vapor ejectors in condensing units of steam turbines. This unit is designed for pumping out a steam-air mixture from a steam turbine condenser, in which the process occurs at a pressure lower than atmospheric. In the traditional scheme, this is provided by a two-stage steam-jet ejector unit. The proposed scheme involves the use of a single-stage liquid-vapor ejector and its possible pre-vacuum mode of operation in conjunction with a liquid-ring vacuum pump. A working process of the liquid-vapor ejector does not require the supply of working

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25

Serhii, Sharapov, Yevtushenko Sviatoslav, Panchenko Vitalii, Kozin Viktor, and Ivchenko Oleksandr. "Improving the efficiency of condensation installations of steam turbines by applying liquid-vapor ejector." Eastern-European Journal of Enterprise Technologies 4, no. 8 (118) (2022): 44–51. https://doi.org/10.15587/1729-4061.2022.263331.

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This paper considers the possibility of using liquid-vapor ejectors in condensing units of steam turbines. This unit is designed for pumping out a steam-air mixture from a steam turbine condenser, in which the process occurs at a pressure lower than atmospheric. In the traditional scheme, this is provided by a two-stage steam-jet ejector unit. The proposed scheme involves the use of a single-stage liquid-vapor ejector and its possible pre-vacuum mode of operation in conjunction with a liquid-ring vacuum pump. A working process of the liquid-vapor ejector does not require the supply of working

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26

Peng, Huan-Sen, Chen-Yen Liu, and Chieh-Li Chen. "Dynamic Performance Analysis and Design of Vortex Array Grippers." Actuators 11, no. 5 (2022): 137. http://dx.doi.org/10.3390/act11050137.

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In this study, the performance of a vortex array gripper was numerically investigated based on the pressure distribution on the surface of a gripped object and the resulting suction force. An analysis of the suction force generated by a single-vortex gripper was performed to determine the geometric parameters for providing a good suction force and subsequently, for the vortex array gripper configuration. Array grippers consisting of two- and four-vortex grippers were studied. For dual-vortex grippers, the generated suction forces of various inlet air configurations with different vortex grippe

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27

Petrashev, Alexander, and Viktor Klepikov. "RESULTS OF THE STUDY OF PNEUMATIC EJECTOR GUNS FOR USE IN THE PROTECTION OF AGRICULTURAL MACHINES." SCIENCE IN THE CENTRAL RUSSIA, no. 5 (October 31, 2022): 7–19. http://dx.doi.org/10.35887/2305-2538-2022-5-7-19.

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Ejector pneumatic pistols such as the GAV-167 and Voylet PS-5 used for the application of anticorrosive materials with large fillers. Pneumatic pistols have a receiving chamber for material input, an ejector with an air nozzle, a mixing chamber and a spray nozzle. When compressed air supplied through the ejector, a vacuum created in the receiving chamber. The research found that the vacuum pressure in the receiving chamber increased with an increase in the spray pressure, the size of the spray nozzle and a decrease in the length of the receiving chamber. The process of spraying technical liqui

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28

Pshenov, E. A. "Prospects for the automation of a feed mini-plant." Agricultural Engineering, no. 2 (2025): 38–46. https://doi.org/10.26897/2687-1149-2025-2-38-46.

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Automation of a mini feed mill will eliminate the human factor in the management and control of the feed production process. The authors conducted research to improve the effi ciency of the mini feed mill through automatic control and regulation of grain crushing. Automation of the control systems for grain crushing is feasible in case of mechanized regulation of grain material supply into a pneumatic hammer mill. The authors proposed a model for a remote automatic control system for the loading device (ejector) of a pneumatic hammer mill. The proposed design takes into account the specifi ed

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29

Palacz, Magdalena, Tatiana N. Ivanova, Alexander M. Kozlov, and Wojciech Kaniak. "The Prospects of Abrasive Treatment of Tough-To-Machine Materials." Multidisciplinary Aspects of Production Engineering 4, no. 1 (2021): 166–77. http://dx.doi.org/10.2478/mape-2021-0015.

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Abstract In current conditions, great attention is paid to the quality of parts, which is in many ways determined by finishing operations of mechanical treatment, with surface grinding being the most widespread. Grinding process efficiency, abrasive tool wear intensity, machined surface quality and other features of grinding process depend on properties of the environment, where the cutting process takes place. Forced changing of conditions of this environment is one of the ways to control and optimize the grinding process, which can be reached due to finding new technological decisions. One o

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Semenova, E. V., O. V. Iovleva, V. M. Larionov, and I. V. Larionova. "Acoustic vibrations of a gas with an inhomogeneous distribution of the speed of sound along the pipe." Journal of Physics: Conference Series 2379, no. 1 (2022): 012016. http://dx.doi.org/10.1088/1742-6596/2379/1/012016.

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Abstract In this paper, the pulsating combustion of a premixed propane-butane fuel with air in a vortex combustion chamber is considered. The conclusion of the refined frequency equation is made. The characteristic of the mixture supply system is given.

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31

Satoh, Daisuke, Masayoshi Esashi, and Shuji Tanaka. "3607 MEMS-based Ejector to Supply Air to Microcombustors : Comparison between Experimental Results and CFD Simulation." Proceedings of the JSME annual meeting 2005.3 (2005): 251–52. http://dx.doi.org/10.1299/jsmemecjo.2005.3.0_251.

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32

Liu, Wei, and Mats Sandberg. "The effects of room length on jet momentum flux." E3S Web of Conferences 356 (2022): 01001. http://dx.doi.org/10.1051/e3sconf/202235601001.

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As to mixing ventilation in indoor environments, the turbulent jet plays a major role in driving the air movement, contaminant transport, and heat transfer. The main characteristic of a turbulent jet is its momentum flux. By entrainment of air, the flow of a jet increases and may enhance the flooding of contaminant. In investing the jet’s momentum flux, it is generally regarded that the supply jet collides with the opposing wall and the jet is transformed into a wall jet. However, this is not always true if a jet is not sufficiently strong, or the length of a room is large. Therefore, this stu

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33

Shishkin, Nickolai Dmitrievich, Marina Aleksandrovna Marysheva, and Evgeniy Alexandrovich Ivanchuk. "Vortex wind-solar power plants for energy supply oil and gas field facilities." Oil and gas technologies and environmental safety 2024, no. 2 (2024): 19–29. http://dx.doi.org/10.24143/1812-9498-2024-2-19-29.

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A brief description of power plants using renewable energy sources is given for autonomous power supply to small oil and gas field facilities with a power of no more than 20 kW, wind power plants in their composition – 10 kW with an energy efficiency of no more than 0.35-0.45. A modernized design of a vortex wind-solar power plant based on a combined H-Darrieu-Savonius rotor has been developed. Experiments were carried out on a laboratory vortex wind-thermal power plant, simulating the operation of a vortex wind-solar power plant. Experiments have shown that the rotation frequency and power of

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Ivanov, Boris, Bulat Ziganschin, Andrei Dmitriev, Vladimir Medvedev, and Ilnur Gayfullin. "Study of vortex pneumatic sprayer for liquid disinfection." BIO Web of Conferences 52 (2022): 00086. http://dx.doi.org/10.1051/bioconf/20225200086.

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The production of high-quality livestock products can be achieved by upgrading livestock breeds and complying with zootechnical requirements of ensuring sanitary well-being in animal houses. Different ways are applied to gain the proper clean condition of livestock houses and equipment, disinfection preparations for working surfaces. Besides, non-compliance with the requirements for operating devices and standards for disinfectant consumption leads to increased antimicrobial resistance of microorganisms [1]. The efficiency of disinfection depends mainly on the technical capabilities of the uni

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Zhu, Jin Cheng, Han Chen, and Xue Dong Chen. "Numerical Simulation of the Turbulent Flow in Ultra-Precision Aerostatic Bearings." Advanced Materials Research 680 (April 2013): 417–21. http://dx.doi.org/10.4028/www.scientific.net/amr.680.417.

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In this paper, the transient turbulent flow field in ultra-precision aerostatic bearings is numerically investigated, with the focus on vortex structures and pressure distribution in the bearing clearance. In order to capture details of transient turbulent flow, large eddy simulation (LES) is employed. It is found that with the increase of air supply pressure, the flow in the recess becomes turbulent and vortex shedding occurs near the orifice outlet. It is also demonstrated that this unsteady vortex shedding results in pressure fluctuation in the bearing clearance, which is related to the exp

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Orfi, Jamel, and Emad Ali. "A Feasibility Study of Vortex Tube-Powered Membrane Distillation (MD) for Desalination." Water 15, no. 21 (2023): 3767. http://dx.doi.org/10.3390/w15213767.

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This work theoretically studies the capability of using vortex tubes to provide the necessary heating and cooling energies required by a typical direct-contact membrane distillation (MD) process. The vortex tube generates a temperature separation that can supply the membrane distillation process with sufficiently hot feed and cold permeate with a temperature difference as large as 70 °C. Several structures integrating vortex tubes and MD with and without heat recovery and cascading are proposed and their respective performances are assessed and compared. A maximum distillate production of 38.5

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Dostiyarov, Abay, Jordan Hristov, Zhanat Ozhikenova, Viacheslav Polovnikov, Bauyrzhan Nauryz, and Nellya Jamankulova. "Experimental and numerical study of the double stage burner with vortex generator." Thermal Science, no. 00 (2024): 140. http://dx.doi.org/10.2298/tsci220318140d.

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Systematic studies of a double-tier (double-stage) combustion device allowing an effective combustion process due to controlled fuel excess independently in the tiers have been reported. The investigations reported stress the attention on the relationship of the NOx and CO emissions to the air excess and demonstrate that there is an optimal range of air supply minimizing them. A mathematical model allows numerical studies on the novel combustion device and reveals the contributions of the combustion processes carried out in each tier to the gross performance of the combustion device.

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Evtushenko, A. I. "Increasing the Efficiency of Vortex Dust Collector with Secondary Flow Coaxial Input in De-dusting Systems of Reinforced Concrete Production Plants." Occupational Safety in Industry, no. 4 (April 2024): 14–20. http://dx.doi.org/10.24000/0409-2961-2024-4-14-20.

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Currently, the problem of the negative impact of the dust factor on the occupational safety of employees of enterprises producing reinforced concrete products is at the top of the agenda. The finely dispersed structure is specific to dust contaminations emitted during reinforced concrete production workflows, which simultaneously causes increased harm to health and hampers compliance with the minimum required working area dust contamination parameters. Inertial-type dust collectors traditionally used in the industry do not meet the increasing requirements for the quality of operation of dedust

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Alekseenko, Sergei V., Sergey I. Shtork, and Roman R. Yusupov. "EFFECT OF AIR SUPPLY INTO VORTEX FLOW OF LIQUID WITH VARIOUS SWIRL PARAMETERS." Interfacial Phenomena and Heat Transfer 6, no. 2 (2018): 129–38. http://dx.doi.org/10.1615/interfacphenomheattransfer.2018027133.

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Evdokimov, Oleg A., Alexander I. Guryanov, Sergey V. Veretennikov, Umyt P. Muhommedov, and Anastasia A. Shaykina. "An experimental study of a bidirectional vortex combustor with two-stage air supply." Thermal processes in engineering 15, no. 1 (2023): 3–12. http://dx.doi.org/10.34759/tpt-2023-15-1-3-12.

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Rudenko, Nikolay, Valery Ershov, and Viacheslav Evstafev. "Self-generated power supply of agricultural enterprises based on renewable energy sources." E3S Web of Conferences 175 (2020): 11009. http://dx.doi.org/10.1051/e3sconf/202017511009.

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The article contains the following technical proposals for the power supply of autonomous agricultural facilities using renewable energy sources: the use of hybrid solar-wind power plants, the use of vortex wind power plants with a vertical axis to use both the energy of horizontal wind flows and the energy of upward air flows. The structure and operation algorithm of an autonomous power supply system based on a hybrid solarwind power plant and a diesel generator for autonomous agricultural facilities of small and medium power in regions where there is no distribution electric network are prop

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Norchak, Volodymyr Ivanovich. "COMBUSTION OF COMPOSITE PEAT-COAL MIXTURES IN A VORTEX FIREPLACE." Collected scientific works of Ukrainian State University of Railway Transport, no. 199 (June 10, 2022): 23–31. http://dx.doi.org/10.18664/1994-7852.199.2022.258647.

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The results of the numerical study of peat and brown coal combustion processes in avortex furnace with a power of 2.5 MW are presented. The processes in a vortex furnace with counterswirling flows with an upper supply of fuel and primary air and a supply of secondary air at thebottom of the furnace are studied. The removal of slag occurs in the bottom of the furnace. Theparticle size of fuel is from 25 microns to 250 microns. The calorific value of peat is 12.3 MJ/kg, thevolatile content is Vdaf=38 %, humidity is Wp=40 %, the stoichiometric coefficient is 7 kg air/kg fuel.The calorific value o

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Anisimov, Victor, Vadym Ryaboshapka, and Anatoliy Yelenych. "MODERNIZATION OF THE DESIGN OF THE MIXING AND FUEL SUPPLY SYSTEM FOR TRACTOR DIESELS FOR BIOFUEL OPERATION." ENGINEERING, ENERGY, TRANSPORT AIC, no. 4(111) (December 18, 2020): 135–47. http://dx.doi.org/10.37128/2520-6168-2020-4-16.

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In diesel engines, the combustion process takes place over a very short period of time (0.001 s). As a result, complete and timely combustion of fuel and good use of the air available in the engine cylinders can be achieved only with very high-quality mixing. The use of biofuels in modern diesel engines causes a number of problems associated with changes in the parameters of fuel supply and mixing. All types of fuel have different characteristics: density, viscosity, lubricating properties, self-ignition temperature, compressibility and. in this regard, the laws of fuel supply: spraying, combu

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Kobzar, S., I. Borisov, A. Khalatov, A. Teplitski, and Y. Pitsukha. "CFD MODELING OF VORTEX AFTERBURNING OF BIOMASS GASIFICATION PRODUCTS IN A FLUIDIZED BED FURNACE." Thermophysics and Thermal Power Engineering 43, no. 4 (2021): 83–91. http://dx.doi.org/10.31472/ttpe.4.2021.10.

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CFD modeling of the afterburning of biomass gasification products in a fluidized bed furnace with a vortex supply of secondary air has been carried out. The effect of secondary air heating on the ecological characteristics of flue gases has been determined. Modeling has shown that gasification products swirl in the primary chamber with the formation of a central vortex, which obeys the law of solid-body rotation. An increase in the temperature of the secondary air leads to an increase in its tangential velocity and, as a consequence, to an increase in centrifugal mass forces. Calculations have

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Gong, Chaoqi, Yaohong Jiang, and Yong Cheng. "Parametric study on flow characteristics of air vortex ring supply using large-eddy simulation." International Journal of Thermal Sciences 192 (October 2023): 108397. http://dx.doi.org/10.1016/j.ijthermalsci.2023.108397.

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Abiev, R. Sh. "Fabrication of foam concrete by use of novel foam generator — vortex jet apparatus: study of foam concrete properties." Industrial processes and technologies 3, no. 1(8) (2023): 69–93. http://dx.doi.org/10.37816/2713-0789-2023-3-1(8)-69-93.

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A new method of foam concrete production by use of vortex jet apparatus (VJA) is studied. The foam produced by VJA exhibits high stability and narrow size distribution of the bubbles’ diameter and the latter correlates well with diameters of foam concrete pores. VJA is a compact device allowing to generate foam without compressor, inhausting the air from the ambience resulting from vacuum in the center of vortex flow. Owing to additional opportunities (compared e.g. with usual axial ejector) like ability to suck the air, longer residence time and higher kinetic energy transformed further into

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Chen, Tsing-Chang, Ming-Cheng Yen, Gin-Rong Liu, and Shu-Yu Wang. "Summer Upper-Level Vortex over the North Pacific." Bulletin of the American Meteorological Society 82, no. 9 (2001): 1991–2006. http://dx.doi.org/10.1175/1520-0477-82.9.1991.

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The midocean trough in the North Pacific may form a favorable environment for the genesis of some synoptic disturbances. In contrast, the North Pacific anticyclone may hinder the downward penetration of these disturbances into the lower troposphere and prevent the moisture supply to these disturbances from the lower troposphere. Because no thick clouds, rainfall, and destructive surface winds are associated with these disturbances to attract attention, they have not been analyzed or documented. Actually, the upper-level wind speed within these disturbances is sometimes as strong as tropical cy

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Jia, Ren Yong. "Numerical and Physical Model Study of Tangential Vortex Dropshaft." Applied Mechanics and Materials 353-356 (August 2013): 2926–29. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2926.

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Drop shafts, especially the vortex drop structure, are vertical conveyance conduits used in hydraulic engineering, water supply and drainage engineering, and so on. Because of complex flow properties and safety requirement, the system running security and reinforcement measure should be verified before it was built. In this paper, numerical and physical simulation methods were employed to verify mutually and analyze the hydraulic characteristics in a tangential vortex dropshaft. It is shown that the water carrying capacity of the dropshaft could be increased suitably and the safety freeboard o

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Zagoruiko, Mikhail Gennadievich, Sergei Anatolievich Pavlov, and Igor Andreevich Bashmakov. "Investigation of aerodynamics in combustion of vegetative waste on isothermal models." Agrarian Scientific Journal, no. 10 (October 25, 2023): 168–73. http://dx.doi.org/10.28983/asj.y2023i10pp168-173.

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Modern agricultural vehicles contain a large number of components, which include micro Abstract. Conventional furnaces using alternative fuels, such as vegetable waste (VW), are widely used instead of furnaces operating on conventional fuels. The furnaces aggregated with dryers of SZT and SP type are widely used in agriculture and food industry. Two models with a suspended bed were investigated: with flare-vortex and cyclone-vortex modes. The first model assumes the presence of an inclined grate in a rectangular chamber with a concentrated supply of secondary blast, primary blast with material

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Liang, Bing, and Haidong Wang. "A preliminary research on the periodic characteristics of a ventilation system with fluid oscillator." E3S Web of Conferences 356 (2022): 01068. http://dx.doi.org/10.1051/e3sconf/202235601068.

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The fluid oscillator is a device that produces periodic alternating jets by supplying a certain pressure of the fluid. In this paper, the fluid oscillator is applied to the field of building ventilation. The supply air direction will change periodically and create a vortex shedding effect in the ventilated environment. By establishing a three-dimensional model of the double feedback fluid oscillator, CFD numerical simulation technology was used to study the indoor flow field characteristics when the fluid oscillator was used for ventilation and the slit air supply. The results show that the in

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