WFRF:(Minelli Guglielmo 1988)
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Floor motion's influence on wake asymmetry of a notchback bluff body
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- He, Kan, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Central South University
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- Minelli, Guglielmo, 1988 (author)
- Volvo Cars
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- Su, Xinchao, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- (creator_code:org_t)
- AIP Publishing, 2022
- 2022
- English.
- In: Physics of Fluids. - : AIP Publishing. - 1070-6631 .- 1089-7666. ; 34:3
- Journal article (peer-reviewed)
Abstract
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- Large eddy simulations are used to explore the influence of floor motions on asymmetric flows around a notchback bluff body. The focus of this study is on the aerodynamic forces and the extent of natural wake asymmetry presented under moving and stationary ground conditions. The different ground condition has a notable influence on the aerodynamic force and the surrounding pressure distribution of the body. On the other hand, the wake asymmetry, known to be a sensitive phenomenon, is not evidently affected by the floor motion. However, quantitative analysis of the averaged and the statistic flow still suggests slight differences in the degree of wake asymmetry between the two ground conditions. Modal analysis applying proper orthogonal decomposition confirms that the asymmetric wake dynamics and the wake shedding frequency are not sensitive to the floor motion. The accuracy of the numerical simulation is established by a grid-independence study.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Farkostteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
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- ENGINEERING AND ...
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