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Design and Manufacturing of a Miniature Double-Circular-Arc Line Gear Pump [PDF]
MicromachinesTraditional involute gear pumps find it difficult to meet the requirements of miniaturization and high performance because of the undercutting, trapped oil, and flow pulsation.
Yangzhi Chen +4 more
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Jixie chuandongIn order to effectively relieve the trapped-oil phenomenon of external gear-pumps and gear-motors, based on its constant output capacity, by analyzing the influence of large modulus under equal displacement on the load flow, leakage flow and unloading ...
Liu Ping, Li Yulong, Song Anran
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Numerical Modeling of Fluid’s Aeration: Analysis of the Power Losses and Lubricant Distribution in Gearboxes [PDF]
Journal of Applied and Computational Mechanics, 2023 Aeration determines the entrainment of air in another fluid. In geared transmissions, this process affects the operating temperature of the mechanical system because the air’s bubbles trapped in the lubricant act as an insulator.
Marco Mastrone, Franco Concli
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Study on Multi-flow Field Characteristics of Unloading Groove Spacing of Bidirectional Gear Pump [PDF]
Journal of Applied Fluid Mechanics, 2023 Improving the output flow quality of the high-precision micro bidirectional gear pump can effectively improve the position control accuracy and dynamic characteristics of the electro-hydraulic actuator. In order to meet the appeal requirements and reduce
H. Zhang +3 more
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In-situ characterization of capillary pressure during three-phase flow in porous media [PDF]
E3S Web of Conferences, 2023 We characterize the pore-scale fluid distributions, phase connectivity, and local capillary pressures during three-phase flow in a water-wet Berea sandstone sample.
Zankoor Ahmed +3 more
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Frontiers in Physics, 2021 Electrowetting display (EWD) device is a new type of reflective optoelectronic equipment with paper-like display performance. Due to the oil backflow phenomenon, it is difficult for pixels to be maintained a stable aperture ratio, so the grayscale of ...
Taiyuan Zhang, Yong Deng
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Evaluating the Oil Mobilization Properties of Nanoparticles Treated with Arabic Gum and Xanthan Gum for Trapped Oil in Porous Media [PDF]
, 2016 The flow of multiple fluid phases in porous media often results in trapped droplets of the non-wetting phase. Recent experimental and theoretical studies have suggested that nanoparticle aqueous dispersions may be effective at mobilizing trapped droplets
Afolabi, Richard Oyekunle +2 more
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Alexandria Engineering Journal, 2023 In the present analysis, we discussed the influence of heat and mass transfer on the hydro-magnetic peristaltic flow of a Casson fluid in a rotating inclined system through an asymmetric channel.
N.M. Hafez +2 more
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Jixie chuandong, 2023 In order to solve the problems in the existing gear pump with another trapped oil buffer groove, an external gear pump with axial stepped-gear structure for realizing two different contact ratios is proposed; the trapped-oil load flow from the gear ...
Wang Hao, Song Anran, Li Yulong
doaj
A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon
Jixie chuandong, 2023 In order to improve the cavitation performance under high-speed for external gear pumps, a comprehensive compensation method with the small backlash, innovative annulus relief-groove and increasing inlet oil-pressure is proposed.
Li Yulong, Hou Xinyu, Zhang Lihua
doaj