Results 1 to 10 of about 19,548 (308)
Study on Aerodynamic Drag Reduction at Tail of 400 km/h EMU with Air Suction-Blowing Combination
Machines, 2023 In order to further reduce the aerodynamic drag of High-speed Electric Multiple Units (EMU), an active flow control drag reduction method combining air suction and blowing is proposed at the rear of the EMU train.
Hongjiang Cui, Wu Deng, Deng Wu
exaly +3 more sources
A novel aerodynamic drag-reduction mechanism using dolphin-inspired ultrasonic microvibrations [PDF]
Scientific ReportsAerodynamic drag, particularly viscous drag, is a significant source of energy loss in aircraft, with its reduction being critical for improving overall aerodynamic performance.
Dongyue Wang, Hao Liu
doaj +2 more sources
An aerodynamic drag model for protein ions [PDF]
Journal of the American Society for Mass Spectrometry, 1994 The energy losses of protein ions passing through a collision cell filled with inert gas have been modeled as the aerodynamic drag on a projectile at high Knudsen number. When applied to the energy loss data of Covey and Douglas (J. Am. Soc. Mass Spectrom.
D J Douglas
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Numerical analysis of ski suits surface roughness effects on aerodynamics during the in-run phase of ski jumping [PDF]
Scientific ReportsThe study employs the shearstress transport (SST) turbulence model within a computational fluid dynamics (CFD) framework to investigate the influence of skijumping suit surface roughness on aerodynamic performance during the in-run phase.
Hong Lin +4 more
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The Aerodynamic Drag of Parafoils [PDF]
Journal of Aircraft, 2005 Introduction T HE parafoil is an aerodynamic decelerator that uses the concept of parachute and airfoil aerodynamics. The device has been used as a parachute for high-precision delivering of payload (military and civilian), to recover sounding rockets, for various tethered applications (to carry instrumentation for weather survey, air pollution ...
Carruthers, A +1 more
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Fluids, 2023 Due to current EU regulations, constant-speed testing on test tracks is used for aerodynamic certification of heavy-duty vehicles (HDV). However, the aerodynamic development of HDVs is performed using wind tunnels and computational fluid dynamics (CFD ...
Carlos Peiró Frasquet +3 more
doaj +1 more source
Modelling, 2022 The aerodynamic efficiency of trucks is very low because of their non-streamlined box shape, which is subject to practical constraints, leaving little room for improvement in terms of aerodynamic efficiency.
Terrance Charles, Zhiyin Yang
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Data Mining-Based Design Space Exploration and Optimization for Tandem Airfoils
International Journal of Aerospace Engineering, 2023 The joined-wing configuration has great technical appeal for the development of next-generation SensorCraft. Research based on the simplified tandem airfoil system can improve understanding of the joined-wing configuration’s aerodynamic characteristics ...
Yayun Shi +4 more
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Aerodynamic Design and Shape Optimization with the Far-Field Drag Decomposition Approach
Xibei Gongye Daxue Xuebao, 2020 In the aerodynamic shape design, the drag prediction has always been an extremely challenging mission for the exploration of a configuration. As for the more complex configurations, it is especially desired to the availability of a highly accurate and ...
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Investigation of wheelhouse shapes on the aerodynamic characteristics of a generic car model
Advances in Mechanical Engineering, 2021 As vehicle speed increases, the aerodynamic drag reduction becomes increasingly significant. The aim of this paper is to find out the effects of the wheelhouse shapes on the aerodynamics of an Ahmed body with a 35 slant angle. In this paper, based on the
Haichao Zhou +4 more
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