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Riblet-assisted con...
Riblet-assisted control of transformation of the Λ-structure into a turbulent spot
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- Chernoray, Valery, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Litvinenko, Yu.A. (författare)
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Kozlov, V.V. (författare)
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visa fler...
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- Löfdahl, Lennart, 1948 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Grek, G.R. (författare)
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Chun, H.H. (författare)
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visa färre...
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(creator_code:org_t)
- 2005
- 2005
- Engelska.
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Ingår i: Thermophysics and Aeromechanics. - 0869-8643. ; 12:4, s. 539-548
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- Experimental results are presented on transformation of a solitary Λ-structure into a turbulent spot and control of this process by means of riblets on the wetted surface in the boundary layer on a flat plate. It is shown that riblets exert a stabilizing effect on transformation of the Λ-structure into a turbulent spot. The Λ-structure on a smooth surface is shown to stretch in the streamwise direction and transform into a hairpin vortex, which becomes a turbulent spot further downstream. The intensity of the Λ-structure on riblets first increases and then decays further downstream, reaching less than half its value on a smooth surface. Finally, the Λ-structure decays on riblets without forming a turbulent spot.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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