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Effects of freestre...
Effects of freestream turbulence on crossflow instabiltiy
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- Hanifi, Ardeshir, Docent, 1963- (författare)
- KTH,Linné Flow Center, FLOW,Mekanik,Swedish Defence Research Agency, FOI, Stockholm, SE-164 90, Sweden
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- Hosseini, Seyed M. (författare)
- KTH,Linné Flow Center, FLOW,Mekanik
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- Henningson, Dan S. (författare)
- KTH,Linné Flow Center, FLOW,Mekanik
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(creator_code:org_t)
- TU Delft, 2015
- 2015
- Engelska.
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Ingår i: Proceedings - 15th European Turbulence Conference, ETC 2015. - : TU Delft.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Direct numerical simulations (DNS) have been performed in order to investigate the interaction of freestream turbulence and crossflow generated instability on a swept wing. The experiments by [3] and [1] are selected as the reference cases. In those experiments the authors explore the interaction between different freestream turbulence characteristics and different roughness element characteristics. In the current study, isotropic homogenous freestream turbulence are generated following experimental parameters and then fed as the inflow boundary condition for DNS of flow over the wing. A spanwise array of roughness elements corresponding to the most unstable stationary modes are used to generate the crossflow vortices. The effects of the freestream turbulence on the crossflow instability and transition to turbulence are later studied.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Nyckelord
- Swept wings
- Vortex flow
- Cross-flow instabilities
- Crossflow vortices
- Experimental parameters
- Freestream turbulence
- Inflow boundary conditions
- Roughness elements
- Stationary modes
- Transition to turbulence
- Turbulence
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)