Marc Lange

DNS of Turbulent Premixed CO/H2/Air Flames

Abstact. A program for the direct numerical simulation (DNS) of reactive flows is presented. In favor of using detailed models for chemical kinetics and molecular transport only spatially two-dimensional simulations are performed. This scientific application code has been used as a benchmark on several platforms, including Intel Itanium 2 systems, IBM's SMP server pSeries 690, and a Fujitsu-Siemens hpc-Line cluster with Intel Xeon CPUs. The overhead for parallelization on these systems is discussed separately from the single processor performance. Up to 512 processor elements of a Cray T3E have been used and it is shown that even more processors could be used while maintaining a high parallel efficiency. Direct simulations of flames evolving after induced ignition of a premixed CO/H2/air mixture under turbulent conditions have been carried out. Results of this investigation are presented in the application part of the paper.

The full article has been published in:
E. Krause, W. Jäger, M. Resch (Eds.)
High Performance Computing in Science and Engineering '03
Springer-Verlag Berlin Heidelberg New York
Pages 211 - 224

Book Cover: HPC in Science and Engineering '03

Information on this book from the publisher: This book presents the state-of-the-art in modelling and simulation on supercomputers. Leading German research groups present their results achieved on high-end systems of the High Performance Computing Center Stuttgart (HLRS) for the year 2003. The reports cover all fields of computational science and engineering ranging from computational fluid dynamics via computational physics and chemistry to computer science. Special emphasis is given to industrially relevant applications. Presenting results for both vector-systems and micro-processor based systems the book allows to compare performance levels and usability of a variety of supercomputer architectures. In the light of the success of the Japanese Earth-Simulator this book may serve as a guide book for a US response. The book covers the main methods in high performance computing. Its outstanding results in achieving highest performance for production codes are of particular interest for both the scientist and the engineer. The book comes with a wealth of colored illustrations and tables of results. ISBN 3-540-40850-9