Ebook: High Performance Computing in Science and Engineering '08: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2008

The discussions and plans on all scienti?c, advisory, and political levels to realize an even larger “European Supercomputer” in Germany, where the hardware costs alone will be hundreds of millions Euro – much more than in the past – are getting closer to realization. As part of the strategy, the three national supercomputing centres HLRS (Stuttgart), NIC/JSC (Julic ¨ h) and LRZ (Munich) have formed the Gauss Centre for Supercomputing (GCS) as a new virtual organization enabled by an agreement between the Federal Ministry of Education and Research (BMBF) and the state ministries for research of Baden-Wurttem ¨ berg, Bayern, and Nordrhein-Westfalen. Already today, the GCS provides the most powerful high-performance computing - frastructure in Europe. Through GCS, HLRS participates in the European project PRACE (Partnership for Advances Computing in Europe) and - tends its reach to all European member countries. These activities aligns well with the activities of HLRS in the European HPC infrastructure project DEISA (Distributed European Infrastructure for Supercomputing Appli- tions) and in the European HPC support project HPC-Europa. Beyond that, HLRS and its partners in the GCS have agreed on a common strategy for the installation of the next generation of leading edge HPC hardware over the next ?ve years. The University of Stuttgart and the University of Karlsruhe have furth- more agreed to bundle their competences and resources.

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This book presents the state of the art in simulation using supercomputers. Leading researchers present results achieved on systems of the Stuttgart High Performance Computing Center (HLRS) for the year 2008. The reports cover all fields of computational science and engineering, ranging from CFD and computational physics and chemistry to computer science, with a special emphasis on industrially relevant applications. Presenting results for both vector-based and microprocessor-based systems, the book makes it possible to compare the performance levels and usability of various architectures. As the HLRS operates the largest NEC SX-8 vector system in the world, this book gives an excellent insight into the potential of such systems. The book further covers the main methods utilized in high performance computing. Its outstanding results in achieving the highest performance for production codes are of particular interest for both scientists and engineers. The book includes a wealth of coloured illustrations and tables.

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This book presents the state of the art in simulation using supercomputers. Leading researchers present results achieved on systems of the Stuttgart High Performance Computing Center (HLRS) for the year 2008. The reports cover all fields of computational science and engineering, ranging from CFD and computational physics and chemistry to computer science, with a special emphasis on industrially relevant applications. Presenting results for both vector-based and microprocessor-based systems, the book makes it possible to compare the performance levels and usability of various architectures. As the HLRS operates the largest NEC SX-8 vector system in the world, this book gives an excellent insight into the potential of such systems. The book further covers the main methods utilized in high performance computing. Its outstanding results in achieving the highest performance for production codes are of particular interest for both scientists and engineers. The book includes a wealth of coloured illustrations and tables.

Content:
Front Matter....Pages i-xii
Front Matter....Pages 1-2
Magnetic Fields in Very Light Extragalactic Jets....Pages 3-11
The SuperN-Project: Status and Outlook....Pages 13-28
Front Matter....Pages 29-37
Computer Simulations of Complex Many-Body Systems....Pages 39-40
Quantum Confined Stark Effect in Embedded PbTe Nanocrystals....Pages 41-57
Signal Transport in and Conductance of Correlated Nanostructures....Pages 59-70
Supersolid Fermions Inside Harmonic Traps....Pages 71-82
Front Matter....Pages 83-92
Azobenzene–Metal Junction as a Mechanically and Opto–Mechanically Driven Switch....Pages 93-94
A Density-functional Study of Nitrogen and Oxygen Mobility in Fluorite-type Tantalum Oxynitrides....Pages 95-108
Molecular Modeling and Simulation of Thermophysical Properties: Application to Pure Substances and Mixtures....Pages 109-117
Front Matter....Pages 119-133
A Hybrid Finite-Volume/Transported PDF Model for Simulations of Turbulent Flames on Vector Machines....Pages 135-135
Numerical Investigations of Model Scramjet Combustors....Pages 137-152
Front Matter....Pages 153-166
Direct Numerical Simulation of Film Cooling in Hypersonic Boundary-Layer Flow....Pages 167-169
Two-Point Correlations of a Round Jet into a Crossflow – Results from a Direct Numerical Simulation....Pages 171-189
The Influence of Periodically Incoming Wakes on the Separating Flow in a Compressor Cascade....Pages 191-203
Turbulence and Internal Waves in a Stably-Stratified Channel Flow....Pages 205-215
High Resolution Direct Numerical Simulation of Homogeneous Shear Turbulence....Pages 217-227
Direct Numerical Simulation (DNS) on the Influence of Grid Refinement for the Process of Splashing....Pages 229-239
Implicit LES of Passive-Scalar Mixing in a Confined Rectangular-Jet Reactor....Pages 241-255
Wing-Tip Vortex / Jet Interaction in the Extended Near Field....Pages 257-268
Front Matter....Pages 269-283
Impact of Density Differences on Turbulent Round Jets....Pages 167-169
Thermal & Flow Field Analysis of Turbulent Swirling Jet Impingement Using Large Eddy Simulation....Pages 285-299
Hybrid Techniques for Large–Eddy Simulations of Complex Turbulent Flows....Pages 301-315
Vector Computers in a World of Commodity Clusters, Massively Parallel Systems and Many-Core Many-Threaded CPUs: Recent Experience Based on an Advanced Lattice Boltzmann Flow Solver....Pages 317-332
Numerical Modeling of Fluid Flow in Porous Media and in Driven Colloidal Suspensions....Pages 333-347
Numerical Characterization of the Reacting Flow in a Swirled Gasturbine Model Combustor....Pages 349-363
Numerical Simulation of Helicopter Aeromechanics in Slow Descent Flight....Pages 365-380
Partitioned Fluid-Structure Coupling and Vortex Simulation on HPC-Systems....Pages 395-410
FEASTSolid and FEASTFlow: FEM Applications Exploiting FEAST’s HPC Technologies....Pages 411-424
Front Matter....Pages 425-440
Effects of Intentional and Inadvertent Hygroscopic Cloud Seeding....Pages 441-442
The Agulhas System as a Key Region of the Global Oceanic Circulation....Pages 443-457
HLRS Project Report 2007/2008: “Simulating El Nino in an Eddy-Resolving Coupled Ocean-Ecosystem Model”....Pages 459-469
Front Matter....Pages 471-477
Numerical Studies on the Influence of Thickness on the Residual Stress Development During Shot Peening....Pages 479-480
A Transient Investigation of Multi-Layered Welds at Large Structures....Pages 481-492
High Performance Computing and Discrete Dislocation Dynamics: Plasticity of Micrometer Sized Specimens....Pages 493-505
Front Matter....Pages 507-523
Molecular Modeling of Hydrogen Bonding Fluids: New Cyclohexanol Model and Transport Properties of Short Monohydric Alcohols....Pages 525-527
Investigation of Process-Specific Size Effects by 3D-FE-Simulations....Pages 529-541
Andean Orogeny and Plate Generation....Pages 543-558
Hybrid Code Development for the Numerical Simulation of Instationary Magnetoplasmadynamic Thrusters....Pages 559-583
Doing IO with MPI and Benchmarking It with SKaMPI-5....Pages 585-597
....Pages 599-613