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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
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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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Aerodynamic Drag Reduction in Commercial Vehicle Using CFD-Based Design Optimisation [version 1; peer review: 2 approved] [PDF]
F1000ResearchBackground The aerodynamics of commercial vehicles is complex. The bluff body of a truck creates complex airflow patterns and induces drag. Numerous researchers have concentrated on enhancing the design of passenger cars, whereas the aerodynamic design ...
Srinivas G +3 more
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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 +3 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
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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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Práce a štúdie - Vydanie 9, 2021 Higher awareness of aviation sustainability and environmental impact creates more research on profile drag reduction. The basic principles of aerodynamic profile drag are described and its role within the total drag. The boundary layer is defined using mathematical and physical principles of fluid dynamics.
Matej Sabo, Martin Bugaj
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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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