Breuer M, Zeiser T, Hager G, Wellein G, Lammers P (2008)
Publication Type: Book chapter / Article in edited volumes
Publication year: 2008
Publisher: Springer
Edited Volumes: High Performance Computing in Science and Engineering '07: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2007
City/Town: Berlin/Heidelberg
Pages Range: 303-318
ISBN: 9783540747383
URI: http://link.springer.com/chapter/10.1007%2F978-3-540-74739-0_21
DOI: 10.1007/978-3-540-74739-0_21
The objective of the project DIMPLE is to study complex turbulent flows over a dimpled surface which is expected to lead to drag reduction compared to a smooth surface. In order to understand the physical mechanism of the flow over an arrangement of shallow dimples, CPU time-consuming direct numerical simulations were carried out using two different grid resolutions and three different configurations. As a first step within this project, the code LESOCC was evaluated and optimized for the new vector machine NEC SX-8. Classical vector systems still combine excellent performance with a well-established optimization approach. On the other hand, clusters based on commodity microprocessors offer comparable peak performance at much lower costs. In the context of the introduction of the NEC SX-8 vector computer series we compare single and parallel performance of a computational fluid dynamics application on the SX-8 and on the SGI Altix architecture demonstrating the potential of the SX-8 for teraflop computing in the area of turbulence research and flow control. Finally, results of the flow predictions over a dimpled surface are presented and compared with the reference case of plane channel flow with smooth walls.
APA:
Breuer, M., Zeiser, T., Hager, G., Wellein, G., & Lammers, P. (2008). Direct numerical simulation of turbulent flow over dimples - Code optimization for NEC SX-8 plus flow results. In High Performance Computing in Science and Engineering '07: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2007. (pp. 303-318). Berlin/Heidelberg: Springer.
MLA:
Breuer, Michael, et al. "Direct numerical simulation of turbulent flow over dimples - Code optimization for NEC SX-8 plus flow results." High Performance Computing in Science and Engineering '07: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2007. Berlin/Heidelberg: Springer, 2008. 303-318.
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