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Viac informácií o knihe Effects of Pressure Gradients on Turbulent Boundary Layer Flow Over a Flat Plate with Riblets

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The Air Force Institute of Technology Boundary Layer Research Facility test section was modified to create controlled non-zero streamwise pressure gradients. The capability of the modified facility to reproduce theoretical laminar boundary layer velocity profiles and to create a self-preserving flow with an adverse streamwise pressure gradient was verified with three-dimensional laser Doppler anemometry. The effects of streamwise adverse and favorable pressure gradients on turbulent boundary layer flow characteristics (velocity profiles, turbulence and skin friction) and vortex formation over a flat plate with riblets at low speed (U = 5 m/s) were studied. Normal and spanwise velocity profiles for both pressure gradients showed the presence of paired counter-rotating vortices nested within the riblet valleys. These flow structures increased drag and significantly altered near-wall flow compared to a smooth plate turbulent boundary layer. The adverse pressure gradient tended to degrade these vortices as the flow progressed.

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Zaradenie knihy Knihy po anglicky Society & social sciences Education

• Celý názov: Effects of Pressure Gradients on Turbulent Boundary Layer Flow Over a Flat Plate with Riblets
• Autor: Franklin L Dement
• Jazyk: Angličtina
• Väzba: Brožovaná
• Počet strán: 142
• EAN: 9781249830993
• ISBN: 9781249830993
• ID: 08143336
• Nakladateľ: Biblioscholar
• Hmotnosť: 268 g
• Rozmery: 246 × 189 × 8 mm
• Dátum vydania: 17. October 2012

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