Results 241 to 250 of about 556,138 (304)

Investigation of drag, lift and torque for fluid flow past a low aspect ratio (1:4) cylinder

Computers and Fluids, 2018
Non-spherical objects exist in many multiphase applications but there is very limited data available on the fluid forces acting on these different shapes. This work derives correlations for drag, lift and torque coefficients for a single low aspect ratio
Z. Cao, D. Tafti
semanticscholar   +3 more sources

Drag, lift and torque acting on a two-dimensional non-spherical particle near a wall

Advanced Powder Technology, 2018
Gas-solid granular flows with non-spherical particles occur in many engineering applications such as fluidized beds. Such flows are usually contained by solid walls and always some particles move close to a wall.
A. Zarghami, J. Padding
semanticscholar   +3 more sources

Research on high-speed drag torque characteristics of wet clutches based on mechanism and data-driven approach

Nonlinear Dynamics
Lin Zhang, Hao Zhou, Peng Zhang, Chao Wei, N. Ma, Yunbing Yan   +5 more
semanticscholar   +3 more sources

Optimization Design of Oil Groove Shape on the Surface of Friction Plate in High-Speed Wet Clutch Aimed at Minimizing Drag Torque

Journal of tribology, 2023
The wet clutch, a crucial component of the vehicle transmission system, experiences high-frequency impact and friction between the friction plate and the steel plate under high-speed separation conditions.
Lin Zhang, Yuansheng Zhang, W. Chao, Yunbing Yan   +3 more
semanticscholar   +1 more source

Study on drag torque characteristicsof wet multiplate clutch under high-speed operating condition

Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2023
In order to study the characteristics of the drag torque of wet multi-plate clutches at high speed, a mathematic model of the drag torque considering oil-gas two-phase flow was established.
Jie Li, Chao Ma, Xiao-yan Wang, Hai Lan, Zhiyong Wang   +4 more
semanticscholar   +1 more source

Theoretical and experimental study on drag torque of wet clutch considering surface tension and shrinkage of oil film

Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2022
The drag torque produced by the viscous shearing action of lubricating oil is an important component of the power loss of wet clutches. Studying the prediction model and its influencing factors will provide important theoretical support for reducing the ...
Chunjie Xu, Fangwei Xie, Xinjian Guo, R. Agarwal, Xiumei Liu, Kewei He, Zhibao Li   +6 more
semanticscholar   +1 more source

Torque and Drag Calculations in Multilateral Wells

SPE Nigeria Annual International Conference and Exhibition, 2022
Abstract Multilateral drilling technology has advanced to the point that it is now feasible to explore and extract resources from previously unprofitable reservoirs. It may also help to enhance field development management by allowing for more efficient fluid flow from the formation.
Darlington Etaje, Roman Shor, Reza Lashkari   +2 more
openaire   +1 more source

Simulation and experimental study on the influence of oil groove structure on the drag torque of the wet clutch

Industrial Lubrication and Tribology, 2021
Purpose This paper aims to design a single and double throat oil groove structure, which can reduce the drag torque of the wet clutch. Design/methodology/approach A three-dimensional simulation model was established herein using the computational ...
Chengjun Wang, Wu Ding, Xudong Zheng, Haiqiang Zhu, Zu-zhi Tian, Fangwei Xie, K. Gao   +6 more
semanticscholar   +1 more source

Dynamic Torque and Drag Model

SPE Annual Technical Conference and Exhibition, 2020
Abstract It is generally acceptable to use soft string model for simple wells and stiff string for high dogleg wells. But these models fail to reveal the complex mechanical behaviors of tubular string in tripping in, tripping out, and sliding drilling operations with time as some segments of tubular string may move upward and downward ...
Robello Samuel, Wenjun Huang
openaire   +1 more source

Correlation between preload and no-load drag torque of ball screws

International Journal of Machine Tools and Manufacture, 2016
Chang-guang Zhou, Hutian Feng, Zengtao Chen, Y. Ou   +3 more
semanticscholar   +3 more sources