Archive of SciDAC homepage highlights

SciDAC Tools Fuel Groundbreaking Combustion Research

Using methods developed by SciDAC’s Algorithmic and Software Framework for Applied Partial Differential Equations (APDEC), computational and combustion scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory have created an unparalleled computer simulation of turbulent flames. The research was featured on the cover article of the July 19, 2005 Proceedings of the National Academy of Sciences. The research led to a three-dimensional combustion simulation of unmatched accuracy, a simulation that closely matches conditions found in laboratory combustion experiment. The code allows the researchers to model a flame about 12 cm in height and consisting of 80 chemical species and more than 300 chemical processes. (MORE) - July 2005

Simulations were computed on the IBM SP at NERSC

Better Understanding of Ignition Front Propagation May Lead to Cleaner Engines

Researchers from the Terascale High-Fidelity Simulations of Turbulent Combustion with Detailed Chemistry (TSTC) project are seeking better understanding of inhomogeneous autoignition. Numerical experiments on the effect of thermal stratification on controlling burn rate,under homogeneous charge compression ignition (HCCI) engine conditions, show that increasing thermal stratification promotes more flame-like structures and the zonal model deteriorates with increased stratification. MORE - May 2005

Terascale Supernova Initiative Discovers a New Way Neutron Stars May Be Spun Up

A series of 3D hydrodynamic simulations show the flow in a stellar explosion developing into a strong, stable, rotational flow (streamlines wrapped around the inner core). The flow deposits enough angular momentum on the inner core to produce a core spinning with a period of only a few milliseconds. (MORE) - May 2005

Simulations were computed on the Cray X1 in the National Leadership Computing Facility at ORNL.

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Updated: Tuesday, 28-Feb-2006 15:39:08 EST