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Title:
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Direct Numerical Simulation of the turbulent flow around a NACA 0012 airfoil at different angles of attack
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Author:
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Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor |
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Abstract:
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Direct numerical simulations (DNS) of the flow dynamics over a NACA 0012 airfoil at Reynolds number Re = 5×104 at different angles of attack are presented. The dynamic of the large separation bubble, characterised by laminar boundary layer separation, transition to turbulence and flow reattachment is analysed in detail by means of instantaneous data al different locations in the suction side of the airfoil. It is found that LSB behaviour is characterised by a low-frequency with a time
scale much larger than of the vortex shedding. Thus, in order to capture all the time scales of the flow, statistical results presented have been integrated during a sufficient long time. |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors tèrmics
-Computational fluid dynamics
-Aerofoils
-Turbulence
-Parallelisation
-Dinàmica de fluids -- Simulació per ordinador
-Perfil (fluids)
-Turbulències -- Simulació numèrica |
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Rights:
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Document type:
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Article - Submitted version
Conference Object |
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