Results 121 to 130 of about 8,057 (285)
Study of drag torque in a two-speed dual clutch transmission electric vehicle powertrain system [PDF]
, 2014 University of Technology, Sydney. Faculty of Engineering and Information Technology.Pure electric vehicles are widely looked as a potential avenue to reduce fossil fuel consumption and emission in the long term in the transportation section.
Zhou, X
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The Feasibility Test of Electric Propulsion Systems: Case Study for a Light and Fixed‐Wing Aircraft
Energy Science &Engineering, EarlyView.ABSTRACT This study investigates the feasibility and performance of a fully electric propulsion system (EPS) integrated into a light fixed‐wing aircraft. The system consists of a 65 kW‐class electric motor, a high‐efficiency inverter, and dual lithium‐ion battery packs with a total capacity of 27 kWh—collectively engineered to fulfill both power ...
Byeong Gyu Gang
wiley +1 more source
Energy Science &Engineering, EarlyView.Turbulence intensity from 1% to 25% was parametrically tested on a three‐bladed H‐type Darrieus rotor across five tip speed ratios (TSRs) using two‐dimensional URANS. The optimal TSR proved the most efficient and most robust operating point simultaneously, with Cp losses capped at 5.8% even at TI = 25%. ABSTRACT The effect of inlet turbulence intensity
Aydin Ulus
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ERD wells torque and drag analysis
La perforación de pozos de alcance extendido se ha fortalecido durante las últimas décadas debido, a pesar de los retos técnicos que este tipo de pozos presenta.
Sierra Montañez, Laura Natalia
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Energy Science &Engineering, EarlyView.Three‐turbine guided Savonius arrays installed along highway corridors extract up to 697 J under multi‐vehicle wake conditions when spaced 12 rotor diameters apart—68% more than compact arrangements. Guide vanes boost output by 80–120%, and interior turbines respond most strongly to spacing, governing overall array performance. ABSTRACT Highway‐induced
Aydin Ulus, Stefan Ilie Moldovan
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Testing geologic and geometric effects on drilling operations using torque and drag models
, 2015 Intuitively, geologic and geometric effects on torque and drag should be significant. But literature suggests otherwise. Lesage et al. (1988) wrote that friction coefficients are not affected by lithology and hole angle, among other things.
Ho, Anthony, M.S. in Engineering
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Investigation of temperature- and pressure effects on drilling fluid properties and related downhole torque and drag calculations [PDF]
, 2016 Master's thesis in Petroleum engineeringIncreasing temperature and pressure with depth, affects the properties of drilling fluid. The effect of temperature and pressure on the density and viscosity of drilling fluid is of great importance.
Tveiterå, Martin
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Immersed Boundary Projection Method for Boundaries With Slip Velocities
International Journal for Numerical Methods in Fluids, EarlyView.A formulation of the immersed boundary method for incompressible flow over arbitrarily‐shaped bodies with surface slip described by the Navier boundary condition is presented. The wall slip velocity and the boundary force are determined implicitly through a projection to satisfy both the boundary condition and the divergence‐free condition of the ...
Takehiro Fujii, Takeshi Omori
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Flexible photocatalytic materials: From substrate engineering to multi‐field synergistic enhancement
FlexMat, EarlyView.This review examines flexible photocatalytic systems, covering substrate evolution from polymers to biomass, fabrication methods like electrospinning, and key mechanical and optoelectrochemical metrics under deformation. Enhancement strategies are critically discussed, followed by applications in energy conversion, environmental remediation, and ...
Weiqi Wang +3 more
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