Results 11 to 20 of about 3,157 (237)

Influence of the Dynamic Motion of a Splash-Lubricated Gearbox on Churning Power Losses [PDF]

Energies, 2019
To investigate the influence of the dynamic motion of a gearbox on lubricating flow field and churning power losses under splash lubrication, a computational fluid dynamics (CFD) method based on a combination of the fluid of volume (VOF) method and ...
Xiaozhou Hu, Pingping Li, Minggui Wu
doaj   +2 more sources

Research on Splash Lubrication Characteristics of the Planetary Gear Train Based on the MPS Method

Jixie chuandong, 2023
In order to analyze the lubrication characteristics of the planetary gear transmission of shield main drive reducers, a simulation model of splash lubrication of the single-stage planetary gear train is established using the moving particle semi-implicit
Shi Lubing, Chen Huixiao, Yan Shidang, Wang Jun, Ding Haohao, Pei Bang, Liu Zhongming, Wang Wenjian   +7 more
doaj   +1 more source

Investigations on Oil Flow Rates Projected on the Casing Walls by Splashed Lubricated Gears [PDF]

Advances in Tribology, 2012
In order to investigate the oil projected by gears rotating in an oil bath, a test rig has been set up in which the quantity of lubricant splashed at several locations on the casing walls can be measured. An oblong-shaped window of variable size is connected to a tank for flow measurements, and the system can be placed at several locations. A series of
Leprince, Gauthier, Changenet, Christophe, Ville, Fabrice, Velex, Philippe   +3 more
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Experimental Investigation on Churning Power Loss of Splash Lubricated Worm Gear

Periodica Polytechnica Mechanical Engineering, 2023
Churning power losses are a complex phenomenon that produces critical power losses when considering the splash lubrication of gear units. This article describes the method to investigate the churning power loss in a worm gearbox. A particular test rig was designed and fabricated to experiment on single start worm gear incompletely submerged in an oil ...
Hardik G. Chothani, Kalpesh D. Maniya
openaire   +1 more source

The fluctuation energy balance in non-suspended fluid-mediated particle transport [PDF]

, 2015
Here we compare two extreme regimes of non-suspended fluid-mediated particle transport, transport in light and heavy fluids ("saltation" and "bedload", respectively), regarding their particle fluctuation energy balance. From direct numerical simulations,
Alexandre Valance, Ashida K., Bagnold R. A., Einstein H. A., Engelund F., Garcia M. H., Jasper F. Kok, Lettau K., Orencio Durán, Rijn L. C. V., Shao Y., Thomas Pähtz, Tuan-Duc Ho, Yalin M. S.   +13 more
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Optimization Study of Gear Oil-air Lubrication Parameters Based on Orthogonal Test Method

Jixie chuandong, 2022
In order to provide a feasible lubrication means under starved condition， the gear transmission effect and the optimal oil-air parameters using oil-air lubrication are explored.
Chang Lu, Qi Chen, Qingwei Hou, Zhaqiang Tang   +3 more
doaj  

Air Entrainment in Dynamic Wetting: Knudsen Effects and the Influence of Ambient Air Pressure [PDF]

, 2015
Recent experiments on coating flows and liquid drop impact both demonstrate that wetting failures caused by air entrainment can be suppressed by reducing the ambient gas pressure.
Sprittles, James E.
core   +2 more sources

Large droplet impact on water layers [PDF]

, 2004
The impact of large droplets onto an otherwise undisturbed layer of water is considered. The work, which is motivated primarily with regard to aircraft icing, is to try and help understand the role of splashing on the formation of ice on a wing, in ...
Gueyffier D., Howison S.D., Josserand C., Korobkin A. A., Noh W. F., Purvis R., Purvis R., Rider W. J., Smith F. T., Thoroddson S. T., Worthington A. M.   +10 more
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Experimental investigations and analysis on churning losses of splash lubricated spiral bevel gears [PDF]

Mechanics & Industry, 2017
Churning losses are a complex phenomenon which generates significant power losses when considering splash lubrication of gear units. However, only few works deal with bevel gears dipped lubrication losses. The objective of this study is to provide a wide variety of experimental tests on churning losses, especially getting interested in geometry of ...
Laruelle, S., Fossier, C., Changenet, C., Ville, F., Koechlin, S.   +4 more
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Transient Simulation Analysis of Needle Roller Bearing in Oil Jet Lubrication and Planetary Gearbox Lubrication Conditions Based on Computational Fluid Dynamics

Lubricants
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 ...
Shushen Gao, Xiangying Hou, Chenfei Ma, Yankun Yang, Zhengminqing Li, Rui Yin, Rupeng Zhu   +6 more
doaj   +1 more source