![]() ![]() Magagnato, (1998): KAPPA - Karlsruhe parallel program for aerodynamics, TASK quarterly, 2(2), pp. Allmaras (1997): Comments on the feasability ot the LES for wings and on the hybrid RANS/LES approach, In Advances in DNS/LES, 1st AFOSR International Conference On DNS/LES, Greyden Press, pp. Schlatter (2005): Large-Eddy Simulation of the transition and turbulence in wall-bounded shear flow. (2005) Transition Prediction on a Turbine Blade at High Reynolds Numbers by LES, Symp. ![]() Kolbe (1992): New insights into large-eddy simulation. Lilly (1967) The representation of small scale turbulence in numerical simulation experiments. Rodi (2003): DNS, LES and URANS of periodic unsteady flow in a LP turbine cascade: a comparison, Proc., 5th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, Prague.ĭ.K. Ghiglione (1996): Detailed velocity and turbulence measurements of the profile boundary layer in a large scale turbine cascade, ASME Paper No. Conference on Modeling Fluid Flow (CMFF’06), Budapest, Hungary. Gabi (2006): Inlet Condition for Large-Eddy Simulation Applied to a Combustion Chamber. ![]() Symposium on Hybrid RANS-LES Methods, Stockholm.ī. Prosser (2005): A Synthetic-Eddy-Method for Generating Inflow Conditions for Large-Eddy Simulations. The 11th of International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii. Gabi (2006): Calculation of a Turbine Blade at High Reynolds Numbers by Large-Eddy Simulation. Zunino (2003): Transitional boundary layer on the suction side of a turbine blade at different Reynolds numbers, Proc., 5th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, Prague.į. Kleiser (2003): High-Pass filtered Eddy-Viscosity Models for LES, Direct and Large-Eddy Simulation, V.R. In this work we wanted to investigate if they can also be used successfully in this difficult test case. It has been repeatedly shown that hybrid approaches can satisfactorily predict flows of engineering relevance. The SEM has also been extended by Pritz et al. in combination with the Synthetic Eddy Method (SEM) proposed by Jarrin et al. The calculations have been made on a fraction of the blade (10%) using non-reflective boundary conditions of Freund at the inlet and outlet plane extended to internal flows by Magagnato et al. of the well known VKI-turbine blade served to compare our results with the experiments. In this paper we compare the prediction capability of the Detached Eddy Simulation (DES) with the Large Eddy Simulation (LES) using the high-pass filtered (HPF) Smagorinsky model (Stolz et al.) when applied to the calculation of transitional flows on turbine blades. The prediction of the laminar to turbulent transition is essential in the calculation of turbine blades, compressor blades or airfoils of airplanes since a non negligible part of the flow field is laminar or transitional. ![]()
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