Bibliografías temáticas / Oil jet lubrication

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Literatura académica sobre el tema "Oil jet lubrication"

Autor: Grafiati

Publicado: 10 de marzo de 2023

Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Oil jet lubrication"

Dai, Yu, Feiyue Ma, Xiang Zhu, Qiao Su, and Xiaozhou Hu. "Evaluation and Optimization of the Oil Jet Lubrication Performance for Orthogonal Face Gear Drive: Modelling, Simulation and Experimental Validation." Energies 12, no. 10 (2019): 1935. http://dx.doi.org/10.3390/en12101935.

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The oil jet lubrication performance of a high-speed and heavy-load gear drive is significantly influenced and determined by the oil jet nozzle layout, as there is extremely limited meshing clearance for the impinging oil stream and an inevitable blocking effect by the rotating gears. A novel mathematical model for calculating the impingement depth of lubrication oil jetting on an orthogonal face gear surface has been developed based on meshing face gear theory and the oil jet lubrication process, and this model contains comprehensive design parameters for the jet nozzle layout and face gear pa

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Hu, Xiaozhou, Pengfei Li, Can Quan, and Jianing Wang. "CFD Investigation on Oil Injection Lubrication of Meshing Spur Gears via Lattice Boltzmann Method." Lubricants 10, no. 8 (2022): 184. http://dx.doi.org/10.3390/lubricants10080184.

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The meshless Lattice Boltzmann Method (LBM) is introduced and employed to solve the complex two-phase flow problem of jet lubrication of meshing spur gears. Computational fluid dynamics (CFD) simulations based on LBM are carried out using the model of an oil jet impacting rotating gear presented by available experiments, which reveals how the liquid column is broken throughout the tooth tip cutting off the oil jet. Typical oil flow phenomena obtained by simulations are compared with experiments, demonstrating good qualitative agreement, which validates the feasibility of LBM to simulate the ai

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Gao, Shushen, Xiangying Hou, Chenfei Ma, et al. "Transient Simulation Analysis of Needle Roller Bearing in Oil Jet Lubrication and Planetary Gearbox Lubrication Conditions Based on Computational Fluid Dynamics." Lubricants 12, no. 2 (2024): 39. http://dx.doi.org/10.3390/lubricants12020039.

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The transient lubrication conditions of rolling bearings are different in gearboxes and bearing testers. It has been observed that samples of qualified rolling bearings tested in rolling bearing testers often fail and do not meet lifespan requirements when employed in other lubrication conditions. This may be caused by different factors affecting the bearing in testing and applying lubrication. Needle roller bearings were selected for this study to investigate the causes of this phenomenon in terms of lubrication. Based on the computational fluid dynamics (CFD) method, fluid domain models for

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Wei, Feng, Hongbin Liu, and Yongyan Liu. "Study on Atomization Mechanism of Oil Injection Lubrication for Rolling Bearing Based on Stratified Method." Lubricants 12, no. 10 (2024): 357. http://dx.doi.org/10.3390/lubricants12100357.

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The atomization mechanism of lubrication fluid in rolling bearings under high-speed airflow between the rings was investigated. A simulation model of gas–liquid two-phase flow in angular contact ball bearings was developed, and the jet lubrication process between the bearing rings was simulated using FLUENT computational fluid dynamics software (Ansys 19.2). The complex motion boundary conditions of the rolling elements were addressed through a layered approach. We can obtain more accurate boundary layer flow field changes and statistics of the diameter of oil particles in lubricating oil atom

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Shi, Chunxiang, Xiangkun Song, Weipeng Xu, et al. "SPH Simulation of Gear Meshing with Lubricating Fluid–Solid Coupling and Heat-Transfer Process." Processes 13, no. 3 (2025): 730. https://doi.org/10.3390/pr13030730.

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This study employs the meshfree Smoothed Particle Hydrodynamics (SPH) method to simulate the fluid–solid coupling process of gear meshing rotation with lubricating oil or oil jet lubrication fluids, considering the heat-transfer process under preset initial temperature conditions. While traditional grid methods face challenges in simulating the dynamic interaction between gear-meshing rotation and lubricating fluids, such as time-dependent contact in fluid–solid coupling and heat transfer, difficulties in handling meshing gaps, and the complexity of dynamic mesh setup, our approach leverages t

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Tang, Jichuan, Tianhao Wang, Huichuan Cheng, Xingyun Jia, Kening Li, and Decai Bian. "Design of Jet Control Device for Forced Lubrication System of Bearing." Journal of Physics: Conference Series 2694, no. 1 (2024): 012006. http://dx.doi.org/10.1088/1742-6596/2694/1/012006.

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Abstract In response to the problem of poor lubrication effect and unstable bearing operation leading to bearing failure in traditional bearings, the solution of installing a jet device on the bearing has been proposed. Using numerical calculation software, analyze the impact of installing a semi-circular or 1/4 circular jet device on the temperature field and leakage rate of the bearing. The results show that after installing a jet control device, the temperature of the flow field around the bearing decreases significantly at the same inlet pressure, while the leakage rate decreases. Keeping

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Dai, Yu, Xi Chen, Duan Yang, Lanjin Xu, and Xiang Zhu. "Performance of a New Aeronautic Oil-Guiding Splash Lubrication System." Lubricants 10, no. 6 (2022): 130. http://dx.doi.org/10.3390/lubricants10060130.

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Among ever-increasing demands for low power consumption, low weight, and compact reducer systems, an oil-guiding splash lubrication method integrating the oil-guiding cylinder and pipes is suggested to be more suitable for light helicopters, instead of conventional splash or oil jet lubrication. Aiming at improving the lubrication and cooling performance of this special lubrication method, this paper introduces an oil-guiding channel to increase oil quantity reaching the driving gear, bearings, and spline. Firstly, the lubrication and cooling effect of the oil-guiding channel in the main gearb

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Zou, Tiangang, Qingdong Yan, Wei Hou, Chunyu Wang, Ziqiang Zhang, and Junye Li. "Numerical Simulation and Experimental Study on the Role of Jet Angle in Controlling the Flow of Transmission Gears." Lubricants 13, no. 5 (2025): 225. https://doi.org/10.3390/lubricants13050225.

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Gears play an important role in modern machinery and are indispensable transmission components, particularly at high speeds, where lubrication is essential for the reliability and efficiency of the gear unit. In order to study the oil coverage law and heat dissipation mechanism of high-speed rotating meshing gears by injection angle, this paper adopts the moving particle semi-implicit method to establish a high-speed rotating gear lubrication model, study the intrinsic effect of different jet angles on gear lubrication, and build a gear lubrication bench for experimental verification. Numerica

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Yang, Duan, He Liu, Jianfeng Zhong, Xiang Zhu, and Yu Dai. "Influence of Nozzle Layouts on the Heat-Flow Coupled Characteristics for Oil-Jet Lubricated Spur Gears." Lubricants 11, no. 1 (2023): 25. http://dx.doi.org/10.3390/lubricants11010025.

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Aiming to explore the influence of nozzle layouts on the lubrication and cooling performance of spur gears under oil jet lubrication conditions, this paper introduces a heat-flow coupled analysis method to predict the temperature field of the tooth surface with different nozzle layouts. Firstly, the friction heat formulas integrating the coefficient of friction and average contact stress are presented for calculating heat generation. We also present the impingement depth model, which considers the nozzle orientation parameters, jet velocity, and gear structure of the given spur gear pair for l

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Yin, Mei, Xi Chen, Yu Dai, Duan Yang, Lanjin Xu, and Xiang Zhu. "Numerical and Experimental Investigation of Oil-Guiding Splash Lubrication in Light Helicopter’s Reducers." Aerospace 8, no. 11 (2021): 345. http://dx.doi.org/10.3390/aerospace8110345.

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Limited by the space and weight of the reducer, it is difficult to use traditional oil-jet lubrication and splash lubrication for a light helicopter, so an oil-guiding splash lubrication method is adopted as a research object in this paper. Firstly, the lubrication performance of the oil-guiding cylinder in the main reducer under different rotating speeds, oil levels, and flight attitudes is investigated based on the computational fluid dynamics (CFD) method. Then, a specific test rig is developed, and lubrication tests are carried out to verify the feasibility and correctness of the simulatio

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Tesis sobre el tema "Oil jet lubrication"

Biju, Dona. "A parametric study of oil-jet lubrication in gear wheels." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-150786.

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A parametric study of oil-jet lubrication in gear wheels is conducted using Computational Fluid Dynamics (CFD) to study the eﬀect of the diﬀerent design parameters on the cooling performance in a gearbox. Flow in oil jet lubrication is found to be complex with the formation of oil ligaments and droplets. Various hole radii of 1.5, 2 and 2.5 mm along with ﬁve oil velocities is analyzed and it is found that at lower volumetric rates, velocity has more eﬀect on the cooling and at higher volumetric rates, hole size has more eﬀect on the cooling. At higher velocities, the heat transfer is much grea

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Hehir, Ryan Thomas. "A CFD Investigation of the Two Phase Flow Regimes Inside the Bearing Chamber and De-aerator of a Jet Engine." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/73386.

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In a jet engine air and oil are mixed during removal from the bearing chamber. Before the oil can be recycled back into the system it must be separated from the air. This is accomplished through use of a de-aerator and breather. The oil air mixture enters the de-aerator first. The de-aerator is a vertical cylinder in which the air and oil enter from the top of the system. Gravity then pulls the oil down as it circulates along the outer wall of the de-aerator. The air is forced out through a top hole and sent to the breather where any oil droplets which remain are furthered separated. A

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MASSINI, DANIELE. "EXPERIMENTAL INVESTIGATION ON THE FLUID-DYNAMIC LOSSES IN POWER GEARBOXES FOR AEROENGINE APPLICATIONS." Doctoral thesis, 2017. http://hdl.handle.net/2158/1085153.

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Enhancing the efficiency of gearing systems is an important topic for the development of future aero-engines with low specific fuel consumption. The transmission system has indeed a direct impact on the engine overall efficiency by means of its weight contribution, internal power losses and lubrication requirements. Thus, an evaluation of its structure and performance is mandatory in order to optimize the design as well as maximize its efficiency. Gears are among the most efficient power transmission systems, whose efficiencies can exceed 99 %, nevertheless in high speed applications power los

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Libros sobre el tema "Oil jet lubrication"

Pinel, Stanley I. Comparison between oil-mist and oil-jet lubrication of high-speed, small-bore, angular-contact ball bearings. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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R, Signer Hans, Zaretsky Erwin V, and NASA Glenn Research Center, eds. Comparison between oil-mist and oil-jet lubrication of high-speed, small-bore, angular-contact ball bearings. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Capítulos de libros sobre el tema "Oil jet lubrication"

Concli, Franco, and Augusto Della Torre. "Simulation of the Lubrication of High-Speed Jet-Lubricated Gears: Study of the Impact of the Oil Droplet Suspension on the Power Losses." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70462-8_5.

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Gu, Le, Liqin Wang, Zhenhuan Ye, and Dezhi Zheng. "Analyses on the Splashing Parameters of High-Speed Oil Impacted a Wall in Jet Lubrications." In Advanced Tribology. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_39.

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"Atomized Droplet Impact Kinetics Behavior of Cryogenic Air Minimum Quantity Lubrication." In Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-3378-5.ch004.

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In this chapter, a finite element simulation analysis on dynamic behaviors of droplets when they impact onto the wall and liquid film is carried out. Firstly, the morphological evolutionary mechanism during spreading of droplets is analyzed based on the dynamic model of droplets impacting onto the wall. Secondly, the impacting dynamics of a single droplet onto the wall under different kinematic viscosities, surface tension coefficients, impact velocities, and contact angles are simulated by controlling variables based on physical parameters and atomization parameters of the lubricating oil und

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Actas de conferencias sobre el tema "Oil jet lubrication"

Boersma, Pieter, Todd Currier, Jason Ferrante, and Julius Rosenthal. "Experimental Evidence to Influence Design of Novel Low Lubrication Method for Rotorcraft Secondary Lubrication Systems." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-279.

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This paper presents experimental research aimed at developing novel low lubrication methods for rotorcraft and jet engines, focusing on sustaining minimal lubrication to prevent catastrophic bearing failure during loss of lubrication (LoL) events or to increase fuel consumption performance on once-through, fuel-oil bearing lubrication engines. Utilizing two high-speed bearing test rigs simulating low and high thrust class engine conditions, the study establishes lower bounds for oil flow rates necessary to maintain thermal stability and prevent thermal runaway in hybrid ball bearings. These fi

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Le, Jiang, Liu Zhenxia, Lyu Yaguo, and Zhu Pengfei. "Numerical Study on Flow Characteristics of Liquid Jet in Airflows." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91076.

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Abstract The interaction between the fuel jet, the oil jet and the airflow is involved in the afterburner (or ramjet combustion chamber) and the lubricating oil system of the aero-engine respectively. The latter mainly studies the penetration depth of the oil jet into the airflow, the oil jet breakup position and so on. In the under-race lubrication system, the oil jet is deflected due to the high-speed rotation of the oil scoop and some droplets, ligaments are separated. The deflection of the oil jet and the splash of droplets may affect the oil capture efficiency of the under-race lubricatio

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Yaguo, Lyu, Jiang Le, Liu Zhenxia, and Hu Jianping. "Simulation and Analysis of Oil Scoop Capture Efficiency." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75989.

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Under-race lubrication is the main method for the main shaft bearing of aero-engine which with higher performance. Oil scoop is an important part of the under-race lubrication structure, which plays an important role in capturing oil coming out of a stationary jet nozzle, and the efficiency of oil capture has great influence on the performance of the under-race lubrication. In this paper, a reasonable numerical simulation method is used to calculate a certain radial oil scoop. The velocity distribution of the internal air field in the lubrication structure and the oil distribution of the oil-g

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Massini, D., T. Fondelli, B. Facchini, L. Tarchi, and F. Leonardi. "Experimental Investigation on Power Losses due to Oil Jet Lubrication in High Speed Gearing Systems." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64703.

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In order to reduce environmental and climate impact from air traffic, the main effort of aero-engine industry and research community is looking at a continuous increase in gearbox efficiency. With this kind of components every source of loss can be responsible for high heat loads; for this reason oil jet systems are used to provide proper cooling and lubrication of gears tooth surfaces. In the design phase it is important to predict the losses increase due to the lubricating oil jet impact on the spur gear, varying the different geometrical and working parameters such as the jet inclination, d

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Fondelli, Tommaso, Antonio Andreini, Riccardo Da Soghe, Bruno Facchini, and Lorenzo Cipolla. "Volume of Fluid (VOF) Analysis of Oil-Jet Lubrication for High-Speed Spur Gears Using an Adaptive Meshing Approach." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42461.

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In high speed gearbox systems, the lubrication is generally provided using nozzles to create small oil jets that feed oil into the meshing zone. It is essential that the gear teeth are properly lubricated and that enough oil gets into the tooth spaces to permit sufficient cooling and prevent gearbox failure. A good understanding of the oil behaviour inside the gearbox is therefore desirable, to minimize lubrication losses and reduce the oil volume involved, and ensure gearbox reliability. In order to reach these objectives, a comprehensive numerical study of a single oil jet impinging radially

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Prabhakar, Arun, Yousif Abdalla Abakr, and Kathy Simmons. "Effect of Vortex Shedding on the Performance of Scoop Based Lubrication Devices." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63444.

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In civil aircraft aeroengine bearing chambers it is sometimes difficult to feed oil to bearings using the traditional under-race or targeted jet approaches. In such situations one proposed solution is that of a scoop delivery system. Published experimental investigations into scoop performance show that scoop collection efficiency (the percentage of oil delivered by the scoop system to its destination compared to that supplied by the feed jet) is a function of many operational and geometric parameters. However even with high speed imaging it is impossible to experimentally determine in detail

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Wu, Wei, Jibin Hu, Shihua Yuan, and Xueyuan Li. "Computational Fluid Dynamics Evaluation of the Multi-Nozzle Oil-Jet Lubrication for Rolling Bearings." In The 15th International Heat Transfer Conference. Begellhouse, 2014. http://dx.doi.org/10.1615/ihtc15.tpn.008564.

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Korsukova, Evgenia, Arno Kruisbrink, Hervé Morvan, Paloma Paleo Cageao, and Kathy Simmons. "Oil Scoop Simulation and Analysis Using CFD and SPH." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57554.

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The process of rotating scoops capturing oil coming out of a stationary jet nozzle was simulated with CFD (Computational Fluid Dynamics) and SPH (Smoothed Particles Hydrodynamics). The aim was to determine the efficiency of the oil capture, and the effects of varying parameters such as angular velocity of the scoops, the speed and direction of the oil jet and arrangement of the oil jets (in case of more than one jet). This configuration is found in engine cooling and/or lubricating systems: where oil scoops are used to deliver the oil to the places where direct injection is not possible. In CF

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Lee, C. W., G. R. Johnson, P. C. Palma, K. Simmons, and S. J. Pickering. "Factors Affecting the Behaviour and Efficiency of a Targeted Jet Delivering Oil to a Bearing Lubrication System." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53606.

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In this study oil delivery to an aero-engine bearing via a targeted jet was investigated using a bearing chamber test rig. The rig contains a high-speed rotating shaft of engine representative geometry within a stationary Perspex housing. Oil is collected from feedholes leading from scoops (scallops) on the shaft. The efficiency of this oil delivery system is dependent on jet structure and trajectory as it interacts with the rotating chamber flow. Flow visualization techniques and parametric tests are used to assess the influence of shaft speed and jet flowrate on oil collected through the fee

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Prasad, Santosh Kumar, Pradeep Sangli, Osman Buyukisik, and Dave Pugh. "Prediction of Gas Turbine Oil Scoop Capture Efficiency." In ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8329.

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The lubrication system in a gas turbine engine is akin to the human blood circulatory system. Providing right quantities of oil to the right components for cooling and lubrication is the primary function of the lubrication system. In the current analysis, at the downstream end of the lube oil supply line, a stationary oil nozzle sprays a jet of oil to a high speed rotating component called an oil scoop. The function of the oil scoop which rotates at speeds usually greater than 10000 RPM is to ‘Scoop’ or capture the oil and provide an under race oil transfer mechanism to the bearings rotating e

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