Titlebook: High Performance Computing in Science and Engineering, Garching/Munich 2009; Transactions of the Siegfried Wagner,Matthias Steinmetz,Marku

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Assessment of CFD Predictive Capability for Aeronautical Applicationsppplications by comparison with experimental data. Two relevant cases are tested: a generic fan-in-wing configuration and a helicopter fuselage. Unsteady Reynolds Averaged Navier Stokes and Scale-Adaptive Simulations are carried out to predict the flow physics of such complex geometry arrangements.

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Computational Aspects of Implicit LES of Complex Flowsppropriate statistical turbulence models. Existing RANS turbulence models, however, often fail to accurately predict separated and reattached flows. Better results but higher computational costs are expected from Large-Eddy Simulations (LES). It is therefore a common interest to develop efficient an

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Numerical Investigation of the Micromechanical Behavior of DNA Immersed in a Hydrodynamic Flowplex DNA-liquid interactions occur. The goals of the project are to verify the proposed numerical method by comparing the results for simple flow conditions with available numerical and analytical results, to analyze the dynamics of the DNA macromolecular exposed to an uniform and shear flow, perfor

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Numerical Investigation of a Transonic Axial Compressor Stage with Inlet Distortionsre conducted with a Navier-Stokes solver developed by the DLR Cologne. In the first part of the investigations, the flow behavior of the transonic compressor stage was predicted for undisturbed inflow conditions. For those simulations, periodicity was assumed and therefore only one blade passage was

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A Parallel CFD Solver Using the Discontinuous Galerkin Approachies using unstructured grids. In order to close the Reynolds-averaged Navier-Stokes (RANS) system we use the Spalart-Allmaras turbulence model, the Wilcox K-. turbulence model or a Detached Eddy Simulation technique. The paper includes some details of the code implementation. The excellent paralleli

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Conference proceedings 2010n the present book results of numerical simulations facilitated by the High P- formance Computer System in Bavaria (HLRB II) within the last two years. The papers were presented at the Fourth Joint HLRB and KONWIHR Review and - sult Workshop in Garching on 8th and 9th December 2009, and were selecte

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Complexities of Performance Prediction for Bandwidth-Limited Loop Kernels on Multi-Core Architectureimited loop kernels on current mainstream processors. We present a diagnostic model with improved predictive power, correcting the limitations of the simple balance metric. The importance of code execution overhead even in bandwidth-bound situations is emphasized.

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On the Turbulence Structure in a Supersonic Diffuser with Circular Cross-Sectionlence production and pressure-strain terms in the Reynolds stress budgets are found to increase dramatically leading to increased Reynolds stresses. The central role of pressure-strain correlations in modifying the turbulence structure under these flow conditions is demonstrated.