Results 31 to 40 of about 343,611 (255)
Applied Sciences, 2022 Aerodynamic drag is a major cause of energy losses during alpine ski racing. Here we developed two models for monitoring the aerodynamic drag on elite alpine skiers in the technical disciplines.
Matej Majerič +4 more
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Aerodynamic drag of modern soccer balls [PDF]
SpringerPlus, 2013 Soccer balls such as the Adidas Roteiro that have been used in soccer tournaments thus far had 32 pentagonal and hexagonal panels. Recently, the Adidas Teamgeist II and Adidas Jabulani, respectively having 14 and 8 panels, have been used at tournaments; the aerodynamic characteristics of these balls have not yet been verified. Now, the Adidas Tango 12,
Asai, Takeshi, Seo, Kazuya
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Study on Aerodynamic Drag Reduction by Plasma Jets for 600 km/h Vacuum Tube Train Sets
Machines, 2023 In order to break through the speed bottleneck, researchers envision using tubes to cover high-speed maglev trains and extract some of the air inside the tubes, creating a low-density environment on the ground, greatly reducing the aerodynamic drag of ...
Ang Li +5 more
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Aerodynamic Drag of Streamers and Flags [PDF]
Journal of Aircraft, 2005 Low-speed drag and flutter measurements of rectangular flags and streamers are presented. The streamers have aspect ratios between 10 and 30; the flag has an aspect ratio of 3.3. Operating Reynolds numbers are in the range from Re =2 × × 10 5 to 2 × × 10 6 .
A. C. Carruthers, A. Filippone
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International Journal of Heat and Fluid Flow, 2020 Emissions of greenhouse gasses from passenger vehicles is a concern globally. One of the factors that influence the vehicles energy consumption is the aerodynamic drag, continuing to be an active topic of interest. This work investigates the vehicle wake
Magnus Urquhart +3 more
semanticscholar +1 more source
Aerodynamics and Drag of a Car
Highlights in Science, Engineering and Technology, 2023 According to Chinese economic development and human life improvement, the vehicle, as the most important transportation, goes into common people’s life gradually. The following problems of energy are highlighted day by day. In Chinese Manufacturing 2025, the idea of energy-saving and new energy vehicle was pointed out as an important development area ...
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Modification in commercial bus model to overcome aerodynamic drag effect by using CFD analysis
Results in Engineering, 2020 In India coach buses are generally used for long journey from 400 km to 600 km. Volvo B11R bus is widely used by private as well as state government players for its comfortable ride and luxurious feel. No engine is 100% economical so few other parameters
Chandrashekhar R. Jadhav +1 more
semanticscholar +1 more source
Aerodynamic drag reduction in a vehicle based on efficient global optimisation
The Journal of Engineering, 2018 Vehicle aerodynamic shape optimisation is a typical non-linear and computationally expensive black box problem, which is severely limited by time and cost of the objective function evaluations during the global optimisation process.
Chengping Yan +4 more
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Aerodynamic Robust Design Research Using Adjoint-Based Optimization under Operating Uncertainties
Aerospace, 2023 Robust optimization design (ROD) is playing an increasingly significant role in aerodynamic shape optimization and aircraft design. However, an efficient ROD framework that couples uncertainty quantification (UQ) and a powerful optimization algorithm for
Yuhang Ma +5 more
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A Streamlined Design of a High-Speed Coach for Fuel Savings and Reduction of Carbon Dioxide
International Journal of Automotive Engineering, 2011 Numerous aerodynamic designs of high-speed coaches have been made to reduce aerodynamic drag for lower fuel consumption and to keep the driving stability of the vehicle on a highway.
Chul-Ho KIM
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