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Large-eddy simulati...
Large-eddy simulations of adverse pressure gradient turbulent boundary layers
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- Bobke, Alexandra (författare)
- KTH,Linné Flow Center, FLOW,SeRC - Swedish e-Science Research Centre,Mekanik
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- Vinuesa, Ricardo (författare)
- KTH,Linné Flow Center, FLOW,SeRC - Swedish e-Science Research Centre,Mekanik
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- Örlü, Ramis, 1977- (författare)
- KTH,Mekanik,Linné Flow Center, FLOW
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visa fler...
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- Schlatter, Philipp (författare)
- KTH,Mekanik,Linné Flow Center, FLOW,SeRC - Swedish e-Science Research Centre
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visa färre...
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(creator_code:org_t)
- Engelska.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Adverse pressure-gradient (APG) turbulent boundary layers (TBL) are studied by performing well-resolved large-eddy simulations. The pressure gradient is imposed by defining the free-stream velocity distribution with the description of a power law. Different inflow conditions, box sizes and upper boundary conditions are tested in order to determine the final set-up. The statistics ofturbulent boundary layers with three different power-law coefficients and thus magnitudes of adverse pressure gradients are then compared to zero pressure-gradient (ZPG) data. The effect of the APG on TBLs is manifested in the mean flow through a much more prominent wake region and in the Reynolds stresses through the existence of an outer peak. The pre-multiplied energy budgets shows the APG influence on the distribution of the turbulent kinetic energy transfer mechanism across the boundary layer.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Publikations- och innehållstyp
- vet (ämneskategori)
- ovr (ämneskategori)