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Combustion

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Exascale’s New Frontier: Combustion-Pele

PI: Jacqueline Chen, Sandia National Laboratories In 2016, the Department of Energy’s Exascale Computing Project (ECP) set out to develop advanced software for the arrival of exascale-class supercomputers capable of a quintillion (1018) or more calculations per second. That meant rethinking, reinventing, and optimizing dozens of scientific applications and software…
Matt Lakin
January 5, 2024
Science

A New Parallel Strategy for Tackling Turbulence on Summit

Turbulence, the state of disorderly fluid motion, is a scientific puzzle of great complexity. Turbulence permeates many applications in science and engineering, including combustion, pollutant transport, weather forecasting, astrophysics, and more. One of the challenges facing scientists who simulate turbulence lies in the wide range of scales they must capture…
OLCF Staff Writer
November 13, 2019
IndustryScience

Pinnacle Engines Develops Efficient, Low-Emission Gasoline Engine Using Supercomputing

https://vimeo.com/304393904The Pinnacle Engines opposed-piston cylinder shown in three different views. Visualizations illustrate the generation of coherent flow structures and their collapse during the compression stroke, which leads to high levels of turbulence before combustion. Pinnacle Engines researchers analyzed fluid dynamics and combustion behavior to optimize the design of the combustion…
Katie Elyce Jones
December 3, 2018
Science

GM Revs up Diesel Combustion Modeling on Titan Supercomputer

https://vimeo.com/260126956 Most car owners in the United States do not think twice about passing over the diesel pump at the gas station. Instead, diesel fuel mostly powers our shipping trucks, boats, buses, and generators—and that is because diesel engines are about 10 percent more fuel-efficient than gasoline, saving companies money…
Katie Elyce Jones
February 7, 2018
OLCF History

OLCF 25: Detailing Combustion

In 2017, the Oak Ridge Leadership Computing Facility celebrated 25 years of leadership in high-performance computing. This article is part of a series summarizing a dozen significant contributions to science enabled by OLCF resources. The full report is available here. A team led by Jacqueline Chen at Sandia National Laboratories…
OLCF Staff Writer
December 6, 2017
Industry

OLCF Helps GE Deliver Next-Generation Gas Turbines

In 2017, US-based General Electric (GE) delivered its newest heavy-duty gas turbine, the 7HA.02, to two power plants in Texas. The installations marked a milestone in natural gas–derived electricity generation, setting new marks in efficiency and emissions for utility-scale turbomachinery. A key ingredient in GE’s successful recipe for this breakthrough…
Jonathan Hines
October 17, 2017
Science

Modeling Autoignited Combustion to Drive Engines Forward

It’s no surprise that Rudolph Diesel became a millionaire only 6 short years after he patented the first diesel engine in 1892. When used in cars and trucks, diesel engines can deliver better fuel economy than gasoline engines and can last hundreds of thousands of miles longer. The efficiency of…
Rachel McDowell
February 28, 2017
Science

UTRC Researchers Take Flight with Graphics Processing Units for Large Eddy Simulations

Farmington, Connecticut–based United Technologies Corporation (UTC) provides high-technology systems and services to the building and aerospace industries worldwide.  The corporation’s research and innovation arm, United Technologies Research Center (UTRC), supports the development of new technologies and capabilities across UTC with the goal of solving pressing needs in fields represented by…
Eric Gedenk
January 4, 2017
Science

Better Combustion for Power Generation

A simulation of combustion within two adjacent gas turbine combustors. GE researchers are incorporating advanced combustion modeling and simulation into product testing after developing a breakthrough methodology on the OLCF’s Titan supercomputer. In the United States, the use of natural gas for electricity generation continues to grow. The driving forces…
Jonathan Hines
May 31, 2016
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