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The Problem with Cellulosic Ethanol

Simulation provides a close-up look at the molecule that complicates next-generation biofuels Leadership-class molecular dynamics simulation of the plant components lignin and cellulose. This 3.3 million-atom simulation was performed on 30,000 cores of the Jaguar XT5 supercomputer and investigated lignin precipitation on cellulose fibrils, a process that poses a significant…
Leo Williams
September 12, 2011
Science

Simulating Turbulent Combustion Speeds Design of Power and Propulsion Devices

Supercomputers help optimize engines, turbines, and other technologies for clean energy High-fidelity large eddy simulation (LES) of direct-injection processes in internal-combustion engines provides an essential component for development of high-efficiency, low-emissions vehicles. Here LES reveals how fuel from a state-of-the-art injector mixes with air inside an engine cylinder. Image credit:…
Dawn Levy
September 12, 2011
Science

It Takes Three to Tango

The nucleus of an atom, like most everything else, is more complicated than we first thought. Just how much more complicated is the subject of a Petascale Early Science project led by ORNL’s David Dean.
Leo Williams
July 10, 2011