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Session: Instability and Transition 2
Session starts: Tuesday 25 August, 15:00
Presentation starts: 15:00
Room: Room A

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Torsten Seelig (Department of Aerodynamics and Fluid Mechanics, Brandenburg University of Technology, Cottbus, Germany)
Kamil Kielczewski (Institute of Thermal Engineering, Poznan University of Technology, Poznan, Poland)
Ewa Tuliszka-Sznitko (Institute of Thermal Engineering, Poznan University of Technology, Poznan, Poland)
Uwe Harlander (Department of Aerodynamics and Fluid Mechanics, Brandenburg University of Technology, Cottbus, Germany)
Christoph Egbers (Department of Aerodynamics and Fluid Mechanics, Brandenburg University of Technology, Cottbus, Germany)
Patrick Bontoux (M2P2, CNRS, Aix Marseille Universite, Ecole Centrale Marseille, Marseille, France)

Abstract:
In the paper the authors present the results obtained during a numerical (Direct Numerical Simulation/Spectral Vanishing Viscosity method - DNS/SVV) and experimental investigations (Kalliroscope, PIV) of the Taylor-Couette flow with asymmetric boundary conditions. In the paper attention is focused on the laminar-turbulent transition process. The main purpose of the research is to investigate the influence of different parameters (aspect ratio, curvature parameter, end-walls boundary conditions) on the flow structure and on the flow characteristics. The transverse current Jω is computed from the velocity field obtained numerically. The λ2 criterion has been used for numerical visualization.