Results 41 to 50 of about 510,808 (288)

Fluidization of elongated particles—Effect of multi‐particle correlations for drag, lift, and torque in CFD‐DEM

open access: yesAIChE 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

Wind tunnel experimental study on static aerodynamic performance of SB-VAWT without intermediate support axes

open access: yesFrontiers in Energy Research, 2023
Wind power generation is considered an effective way for ships to harness wind energy, and the aerodynamic characteristics of wind turbines determine wind energy utilization and efficiency.
Huawu Zhang, Yihuai Hu
doaj   +1 more source

TORQUE AND DRAG MEASUREMENT: A COMPARISON BETWEEN CONVENTIONAL, SLIM HOLE AND CASING DRILLING METHODS IN A DEVIATED WELL

open access: yesPlatform, a Journal of Engineering, 2020
Different locations and field conditions require various drilling methods to produce oil and gas. Three major operational methods are identified to be slim holes, conventional and casing drilling.
Davood Zivar   +3 more
doaj  

Research on drivability control in P2.5 hybrid system

open access: yesEnergy Reports, 2021
The control of drivability in this paper contains the clutch start, the engine and motor anti-jerk control during tip in and tip out. First, the fast clutch start is divided into five phases as well as the smooth clutch start: the gear selection phase ...
Junchao Jing   +5 more
doaj   +1 more source

Direct numerical simulation of the drag, lift, and torque coefficients of high aspect ratio biomass cylindrical particles

open access: yesThe Physics of Fluids
Biomass straw fuel has the advantage of low-carbon sustainability, and therefore, it has been widely used in recent years in coupled blending combustion with coal-fired utility boilers for power generation.
Jingliang Wang   +7 more
semanticscholar   +1 more source

Research on the aerodynamic characteristics of a lift drag hybrid vertical axis wind turbine

open access: yesAdvances in Mechanical Engineering, 2016
Compared with a drag-type vertical axis wind turbines, one of the greatest advantages for a lift-type vertical axis wind turbines is its higher power coefficient ( C p ).
Xiaojing Sun   +5 more
doaj   +1 more source

Comparison of Single and Dual Coherent Blades for a Vertical Axis Carousel Wind Rotor Using CFD and Wind Tunnel Testing

open access: yesApplied Sciences, 2023
This paper focused on the investigation of the blades for a carousel rotor of a wind turbine with a vertical axis. Cross sections of the single coherent (SC) and the dual coherent (DC) blades were compared in terms of the aerodynamic forces and ...
Marcin Augustyn, Filip Lisowski
doaj   +1 more source

Attitude Control of a 2U Cubesat by Magnetic and Air Drag Torques [PDF]

open access: yesIEEE Transactions on Control Systems Technology, 2019
This paper describes the development of a magnetic attitude control subsystem for a 2U cubesat. Due to the presence of gravity gradient torques, the satellite dynamics are open-loop unstable near the desired pointing configuration. Nevertheless the linearized time-varying system is completely controllable, under easily verifiable conditions, and the ...
Richard L. Sutherland   +2 more
openaire   +2 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

CFD-Based Parametric Optimization of Friction Pad Geometry for Drag Torque Reduction in a Wet Clutch

open access: yesApplied Sciences
In this study, we numerically investigated the effect of friction pad geometry on drag torque reduction in the disengaged state of a wet clutch used in an integrated mechanical limited-slip differential (mLSD)-disconnector module.
Sung Jun Park   +4 more
doaj   +1 more source

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