By Reinhold Bader, Matthias Brehm, Ralf Ebner, Helmut Heller, Ludger Palm, Frank Wagner (auth.), Siegfried Wagner, Arndt Bode, Werner Hanke, Franz Durst (eds.)
High-Performance pcs (HPC) have initiated a innovative advance ment in study and expertise when you consider that many advanced and hard prob lems during this quarter can in simple terms be solved by means of HPC and a community in modeling, algo rithms and software program. In 1998 the Deutsche Forschungsgemeinschaft (German examine organization) urged to put in an extra Federal excessive functionality computing device by means of the single in Stuttgart. In January 1999 the Wissenschaftsrat (German technological know-how Council) determined that the Leibniz Rechenzentrum (Computing heart) of the Bavarian Academy of Sciences in Munich may still run the second one Federal High-Performance laptop in Ger many. The funding fee of this Hochstleistungsrechner in Bayern (HLRB) was once borne via the government of Germany and the unfastened kingdom of Bavaria while the working rate used to be on the cost of the Bavarian Gov ernment simply. The operation of the HLRB is equipped together with the - Leibniz-Rechenzentrum (LRZ) of the Bavarian Academy of Sciences because the working authority of the HLRB - guidance Committee of the HLRB - Competence community for Technical/Scientific High-Performance Comp- ing in Bavaria (KONWIHR). In 2000 a Hitachi SR8000-Fl was once put in. It used to be the 1st Teraflops Com puter in Germany and reached a height functionality of 2 Teraflops after an extension on the finish of 2001. The target of HLRB is to supply desktop facil ities essential to clear up difficult clinical and technological difficulties that can't be solved on monstrous servers yet require huge (storage) high-performance (very quickly) pcs and effective software.
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Additional resources for High Performance Computing in Science and Engineering, Munich 2002: Transactions of the First Joint HLRB and KONWIHR Status and Result Workshop, October 10–11, 2002, Technical University of Munich, Germany
165-172, DNS and LES IV, eds. J. , Kluwer Acad. , Dordrecht. 40 M. Breuer, N. JoviCic, K. Mazaev 4. , Jovicic, N. (2001): Separated flow around a flat plate at high incidence: an LES investigation. J. org) , 2, 1-15. 5. , Mazaev, K : Comparison of DES, RANS, and LES for the separated flow around a flat plate at high incidence, submitted for publication. 6. R. (1997): Comments on the feasibility of LES for wings, and on a hybrid RANS/LES approach. First AFOSR Int. Conf. on DNS/LES, Ruston, LA, Advances in DNS/LES, C.
2000): Detached-eddy simulation of massively separated flows. AIAA Paper 2001-0879. 17. R. (2001): Detached-eddy simulation of the separated flow around a forebody cross-section. 4th Workshop on DNS & LES, Enschede (NL), July 18-20, 2001, ERCOFTAC Series, 8, 481-500, DNS and LES IV, eds. J. , Kluwer Acad. , Dordrecht. 18. , Rodi, W. (1996): Large-eddy simulation of complex turbulent flows of practical interest. In: Flow Simulation with High-Performance Computers II, ed. H. Hirschel, Notes on Numerical Fluid Mechanics, 52, 258-274, Vieweg Verlag, Braunschweig.
Consequently, for the P-LES-F case and at least allusively also for P-LES-C, it is possible to detect a Kelvin-Helmholtz instability occurring in the shear layer and leading to transition. Such detailed flow structures are not resolved by PDES-C. Therefore, DES fails to reflect the flow in this region properly. This also becomes evident looking at the higher-order statistics below. Although the same grid is applied in the P-DES-C and the P-LES-C case, the latter tends more clearly towards the reference case P-LES-F.