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Research Progress of Air Lubrication Drag Reduction Technology for Ships
Fluids, 2022 Air lubrication is a promising drag reduction technology for ships because it is considered to reduce the skin-friction resistance of ships by changing the energy of turbulent boundary layers.
Hai An, Haozhe Pan, Po Yang
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Air Drag Effects on the Missile Trajectories [PDF]
Journal of Applied Mathematics, 2011 The equations of motion of a missile under the air drag effects are constructed. The modified TD88 is surveyed. Using Lagrange's planetary equations in Gauss form, the perturbations, due to the air drag in the orbital elements, are computed between the ...
F. A. Abd El-Salam
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Investigation of the Role of Body Shape on an Air Lubrication System Inspired by Penguins [PDF]
BiomimeticsBubble-assisted drag reduction is a promising strategy for improving the energy efficiency of underwater bodies, but its effectiveness depends not only on air injection but also on the ability of the body geometry to retain bubbles close to the surface ...
Arturo Giacobbe +3 more
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Assessment of conventional and air-jet wheel deflectors for drag reduction of the DrivAer model [PDF]
Advances in Aerodynamics, 2021 Aerodynamic drag is a large resistance force to vehicle motion, particularly at highway speeds. Conventional wheel deflectors were designed to reduce the wheel drag and, consequently, the overall vehicle drag; however, they may actually be detrimental to
Kaloki L. Nabutola +1 more
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On the energy economics of air lubrication drag reduction
International Journal of Naval Architecture and Ocean Engineering, 2012 Air lubrication techniques for frictional drag reduction on ships have been proposed by numerous researchers since the 19th century. However, these techniques have not been widely adopted as questions persist about their drag reduction performance beyond
Simo A. Mäkiharju +2 more
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Current state and prospects on applications of ship drag reduction using air lubrication
Zhongguo Jianchuan Yanjiu, 2023 With the implementation of new carbon reduction rules for international shipping, as well as the domestic "peak carbon and carbon neutrality" strategy, the innovative air lubrication drag reduction technology for ship energy-saving and carbon reduction ...
Shijie QIN +4 more
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Study on the Effect of Air Injection Location on the Drag Reduction in SWATH with Air Lubrication
Journal of Marine Science and Engineering, 2023 In this paper, the air lubrication method is applied to high-speed SWATH (small waterplane area twin hull) to reduce the resistance. The influence of air injection locations on drag reduction is investigated.
Dapeng Zhang, Yunbo Li, Jiaye Gong
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An Exploratory Wind Tunnel Study of Air Jet Wheel Spoilers
Fluids, 2023 Wheels and wheelhouses are a significant source of aerodynamic drag on passenger cars. The use of air jets, in the form of an air curtain, to smooth the airflow around front wheel housings on cars has become common practice, as it produces a small drag ...
Jeff Howell +2 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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Bicycle Freewheeling with Air Drag as a Physics Experiment [PDF]
The Physics Teacher, 2015 To familiarize first-year students with the important ingredients of a physics experiment, we offer them a project close to their daily life: measuring the effect of air resistance on a bicycle. Experiments are done with a bicycle freewheeling on a downhill slope. The data are compared with equations of motions corresponding to different models for the
Janssen, Paul, Janssens, Ewald
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