Combustion Chemistry

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Ahren Jasper and Nils Hansen lead combustion panel at AAAS
Post, March 7, 2013 • On Saturday, Feb. 16, CRF researchers Ahren Jasper and Nils Hansen organized a panel, Predictive Model of the Internal Combustion Engine, at the annual American Association for the Advancement of Science (AAAS) meeting. The panel brought together world leaders from new and ongoing multi-institutional programs designed to address the challenges...
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Craig Taatjes To Be Awarded Polanyi Medal for Pioneering Work in Combustion Chemistry
Post, November 27, 2013 • Sandia combustion chemist Craig Taatjes, whose groundbreaking work on Criegee intermediates has provided scientific insight into hydrocarbon combustion and atmospheric chemistry, has been selected to receive the prestigious Polanyi Medal at the 23rd International Symposium on Gas Kinetics and Related Phenomena, which will be held on July 20–25, 2014, in...

CRF Research Seeks to Improve Confidence in Large Eddy Simulations
Post, May 30, 2014 • Allowing solutions unattainable with direct numerical simulation and offering far greater accuracy than conventional engineering methods, large eddy simulation (LES) is now widely used for studying complex thermophysics in propulsion and power systems. However, because LES demands extremely complex tools, predictive LES has been problematic, leading to sometimes ambiguous results...
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David Chandler Named IAMS Advisory Board Member
Post, October 18, 2013 • Sandia chemist David Chandler has been named to the 7th Advisory Board of the Institute of Atomic and Molecular Sciences (IAMS). Dr. Chandler’s term will run from September 2013 through August 2016. Advisory Board members review research programs at IAMS and recommend scientific directions. IAMS is one of 24 research...

ExaCT offers “proxy apps”
Post, May 22, 2012 • This month, we debuted the new website for The Center for Exascale Simulation of Combustion in Turbulence (ExaCT). The ExaCT group is actively developing a number of “proxy apps” that represent key aspects of structured-grid adaptive PDE-based combustion simulations. A subset of these proxy apps are available to the public....

ExaCT offers "proxy apps"
Post, May 22, 2012 • This month, we debuted the new website for The Center for Exascale Simulation of Combustion in Turbulence (ExaCT). The ExaCT group is actively developing a number of “proxy apps” that represent key aspects of structured-grid adaptive PDE-based combustion simulations. A subset of these proxy apps are available to the public....

ExaCT Website Debuts
Post, May 8, 2012 • Last month we talked about Exascale Computing and Sandian Dr. Jackie Chen’s collaborative grant with Dr. John Bell of Lawrence Berkeley National Laboratory to establish the Center for Exascale Simulation of Combustion in Turbulence (ExaCT). Our new ExaCT website is now live and full of detailed information on the people,...
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February CRF Visitor Departures
Post, April 17, 2014 • Xiaoying Han Xiaoying Han 2/3/2014-2/14/2014 Host: Habib Najm As part of an ongoing collaboration with Habib Najm, Professor Xiaoying Han of Auburn University (Alabama) returned to the CRF to continue research on methods for model reduction in stochastic chemical systems. Prof. Han’s work is focused on developing a theoretical framework...

Judit Zádor Elected Fellow of The Combustion Institute
Post, March 5, 2024 • Judit Zádor (8353), a physical chemist, has been elected a 2024 Fellow of The Combustion Institute “for exceptional contributions in theoretical chemical kinetics and innovations in approaches for automating quantum chemical calculations.” The lifetime honorific title of Fellow is a testament to active participation in the combustion field through publications...
Judit Zador

Lyle Pickett Named SAE Fellow
Post, October 21, 2013 • Lyle Pickett has been named a Fellow of the Society of Automotive Engineers (SAE). Established in 1975, the Fellow grade honors and recognizes important engineering, scientific, and leadership achievements to enhance the status of SAE’s contributions to the profession and to society. Lyle was selected based on his pioneering research...

Magnus Sjöberg receives SAE Oral Presentation Award
Post, December 20, 2013 • CRF researcher Magnus Sjöberg has received an Excellence in Oral Presentation Award from SAE International, formerly the Society of Automotive Engineers. This award, which was established to recognize outstanding speakers at SAE technical sessions, places Magnus in the top 5% of SAE oral presenters for 2013. Based on evaluations submitted...

New Conceptual Insights into Diesel Engine Fuel-Injection Processes
Post, March 12, 2014 • By Joe Oefelein By combining advanced theory and high-fidelity large eddy simulation, CRF researchers Rainer Dahms and Joe Oefelein have provided new conceptual insights that promise to improve the understanding and prediction of fuel-injection processes at high-pressure diesel engine conditions. Their results, which were corroborated by experiments performed by CRF...
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New Methods Allow Prediction of Pressure Dependence in Chemical Reactions
Post, December 20, 2013 • Seeking to free researchers from a nearly exclusive dependence on empirical models, CRF researcher Ahren Jasper and Argonne National Laboratory researchers James A. Miller and Stephen J. Klippenstein have developed a set of theoretical methods for predicting the rates of collisional energy transfer that govern pressure dependence.1 Enabled by both...
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New Polarized-Depolarized Measurement Capability Extends Use of Raman/Rayleigh Methods to More Flame Types
Post, February 26, 2014 • By Robert Barlow Allowing single-shot measurements of all major species in nonsooting flames of simple fuels, such as H2 and CH4, spontaneous Raman scattering has been a key CRF laser diagnostic technique for fundamental turbulent-combustion studies. However, laser-induced fluorescence from soot precursors tends to interfere significantly with Raman scattering signals—limiting...
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Nils Hansen Receives Wilhelm Jost Memorial Medal
Post, June 24, 2024 • Nils Hansen, a physical chemist, has been chosen to receive the Wilhelm Jost Memorial Medal and deliver the Jost memorial lectures, awarded by the Göttingen Academy of Sciences and Humanities with guidance from the German Bunsen Society for Physical Chemistry. This award is given to an internationally acclaimed physical chemist...
Nils Hansen, a physical chemist, working

Novel Spectroscopic Method Reveals Intermediates over a Broad Spectrum
Post, December 2, 2013 • CRF researcher Leonid Sheps has developed a new spectroscopic method, Time-Resolved Broadband Cavity-Enhanced Absorption Spectroscopy (TR-BB-CEAS). The new technique is capable of following the time evolution of transient intermediates as they are produced and consumed in a gas-phase chemical reaction by monitoring their absorption of near-UV to visible light (300–700...
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Robert Barlow Awarded Combustion Institute’s Alfred C. Egerton Gold Medal
Post, September 12, 2014 • Robert Barlow (left) with former Sandian and current research collaborator Simone Hochgreb of the University of Cambridge, who presented him with the Alfred C. Egerton Gold Medal at the 35th International Symposium on Combustion. Sandia National Laboratories scientist Robert Barlow was awarded the Alfred C. Egerton Gold Medal at the...
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SAE International Honors CRF Researchers for Outstanding Presentations
Post, July 25, 2014 • Joseph Oefelein Solid technical work is great—but the ability to communicate effectively about that work is equally critical. To acknowledge the importance of good communication—and maintain a high quality of presentation at its technical meeting—SAE International established the SAE Excellence in Oral Presentation award in 1972. This year, two Sandians,...
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Scrambling molecules with light
Post, August 23, 2011 • Isotopic labeling of chemical compounds is one of the most powerful techniques for understanding how chemical reactions proceed. Adding an extra neutron to an atom’s nucleus [changing hydrogen (H) into deuterium (D) for example] doesn’t usually change chemistry, but the extra mass of the heavier isotope allows scientists to track...

Supercomputing In the Media: National Geographic
Post, June 26, 2012 • Kudos to Sandian Dr. Jackie Chen, whose work on exascale computing systems was recently featured in the National Geographic’s ‘Daily News’ section. Entitled “Supercomputing Power Could Pave the Way to Energy-Efficient Engines,” the news article focused on how the world’s most powerful supercomputers provide critical knowledge to spur the design...

Two CRF Papers Named Distinguished for 34th International Symposium on Combustion
Post, October 18, 2013 • Two papers by CRF researchers have been named Distinguished Papers for the 34th International Symposium on Combustion. “Synchrotron photoionization measurements of fundamental autoignition reactions: Product formation in low-temperature isobutane oxidation” by Arkke J. Eskola, Oliver Welz, John D. Savee, David L. Osborn, Craig A. Taatjes (all Combustion Research Facility) was...
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Uncertainty Quantification in Chemical Systems with Reaction Mechanisms Employing Rate Rules
Post, January 16, 2014 • A team of researchers—Jens Prager, formerly at the CRF and presently at the engineering simulation software firm CD-adapco; Habib Najm and Khachik Sargsyan of the CRF; Cosmin Safta of Sandia’s Computer Sciences and Information Systems center; and William Pitz of Lawrence Livermore National Laboratory—have studied the impact of uncertainty of...

VFP Professor Balint Sztaray Continues CRF Collaboration
Post, July 24, 2014 • Balint Sztaray, a professor of Chemistry at University of the Pacific Over the past two summers and a sabbatical semester in 2013, University of the Pacific (UOP) chemistry professor Balint Sztaray and his research group have been working with the CRF’s David Osborn on a project to improve the selectivity...
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