Results 21 to 30 of about 556,138 (304)
Numerical and Physical Experiments on Drag Torque in a Wet Clutch
Tribology Online, 2012 The effect of flow field on drag torque in a wet clutch was examined through numerical and physical experiments. Three-dimensional hydrodynamic numerical simulations were carried out, and the drag torque was measured experimentally for a single wet ...
Youhei Takagi +3 more
doaj +1 more source
Drag, lift, and torque correlations for axi-symmetric rod-like non-spherical particles in linear wall-bounded shear flow [PDF]
International Journal of Multiphase FlowThis paper presents novel correlations to predict the drag, lift, and torque coefficients of axi-symmetric non-spherical rod-like particles in a wall-bounded linear shear flow.
Victor Ch'eron, B. V. Wachem
semanticscholar +1 more source
Novel Torque and Drag Model for Drilling Two-Dimensional High-Angle Wells
ACS Omega, 2022 Planning high-angle wells involves diverse areas; one of the most important of these areas is torque and drag (T&D) management. Not only could uncontrolled T&D cause various drilling problems like drill string (D/S) failures, casing wear, stuck pipes ...
Muhammad Nour +3 more
semanticscholar +1 more source
Torque and Drag Forces Problems in Highly Deviated Oil Well
Iraqi Journal of Chemical and Petroleum Engineering, 2018 Excessive torque and drag can be critical limitation during drilling highly deviated oil wells. Using the modeling is regarded as an invaluable process to assist in well planning and to predict and prevent drilling problems.
Hasan Ali Neamah +1 more
doaj +1 more source
Air cavities at the inner cylinder of turbulent Taylor-Couette flow [PDF]
, 2018 Air cavities, i.e. air layers developed behind cavitators, are seen as a promising drag reducing method in the maritime industry. Here we utilize the Taylor-Couette (TC) geometry, i.e. the flow between two concentric, independently rotating cylinders, to
Bakhuis, Dennis +5 more
core +2 more sources
Multi-objective Optimization Design of Wet Friction Clutches
Jixie chuandong, 2023 The drag torque of the wet clutch affects the efficiency of the transmission, and the engagement torque of the clutch affects the reliability of the transmission.
Jiang Kai +4 more
doaj
Flow structures and wall parameters on rotating riblet disks and their effects on drag reduction
Alexandria Engineering Journal, 2022 The demand of energy saving and loss mitigation in modern industry gives rise to drag reduction techniques such as micro groove/riblet ever since the last century.
Tong Liang +3 more
doaj +1 more source
Multi-Objective Optimization of Drilling Trajectory Considering Buckling Risk
Applied Sciences, 2022 Directional drilling involves three sections—vertical, curved, and horizontal—and is used for drilling offshore wells and mining unconventional resources.
Jiho Jeong +4 more
doaj +1 more source
AIChE journal. American Institute of Chemical Engineers, 2021 Having proper correlations for hydrodynamic forces is essential for successful CFD‐DEM simulations of a fluidized bed. For spherical particles in a fluidized bed, efficient correlations for predicting the drag force, including the crowding effect caused ...
I. Mema, J. Padding
semanticscholar +1 more source
Horseshoe drag in three-dimensional globally isothermal disks [PDF]
, 2016 We study the horseshoe dynamics of a low-mass planet in a three-dimensional, globally isothermal, inviscid disk. We find, as reported in previous work, that the boundaries of the horseshoe region (separatrix sheets) have cylindrical symmetry about the ...
Benítez Llambay, Pablo, Masset, F. S.
core +1 more source