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Titan Speeds Inquiry into Engine Alloys That Can Take the Heat

Simulations performed on the Cray XK7 Titan supercomputer at the Oak Ridge Leadership Computing Facility (OLCF) filled in a knowledge gap about high-temperature–capable alloys and inspired engineers to successfully develop a new cast aluminum–copper alloy that promises to withstand engine temperatures as high as 300°C—a temperature too extreme for current…
Rachel McDowell
September 17, 2018
By forcing airflow to veer off the trailer towards the wake behind it, the TopKit Aero System (red) reduces the base wake (blue) and increases the pressure on the truck rear, creating a significant reduction in overall vehicle drag. Image Credit: SmartTruckScience

SmartTruck Steps Up Simulations for Certification by Computation

Long-haul tractor trailers, often referred to as “18-wheelers,” transport everything from household goods to supermarket foodstuffs across the United States every year. According to the Bureau of Transportation Statistics, these trucks moved more than 10 billion tons of goods—70.6 percent of the nation’s total freight shipments—in 2016. But this transport doesn’t…
Rachel McDowell
August 29, 2018
Science

New Boeing Method Accelerates Turbulence Modeling Uncertainty Analysis

A simulation of a physical wind tunnel airplane model (the NASA Common Research Model), widely used for CFD benchmarking and analysis. Boeing researchers recently used OLCF resources to perform simulations that would aid them in identifying and reducing uncertainty in a computational turbulence model called the Spalart–Allmaras model. Quantifying the…
Rachel McDowell
December 20, 2017