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Results 51–75 of 120

Hanging out with the stars
Post, March 8, 2021 • Sandia establishes collaborative research facility to study pervasive and versatile low-temp plasmas Low-temperature plasma—the most pervasive state of matter in the universe—consists of gaseous mixtures of ions and electrons that interact with background neutral atoms or molecules to make them reactive. It also generates energetic photons. All this activity means...

Heavy-Duty Diesel and Gaseous-Fueled Engine Laboratory
Page • The Heavy-Duty Diesel and Gaseous-Fueled Engine Laboratory uses laser-based and imaging diagnostics to develop the science base of in-cylinder processes needed by the heavy-duty engine industry. Our research provides engineers with the necessary understanding to design cleaner, more fuel-efficient engines. Fuel injection, combustion processes, and emissions formation are studied in...

Heavy-Duty Engine Combustion and Fuel Effects Lab
Page • The Heavy-Duty Engine Combustion and Fuel Effects Laboratory centers around a modern 1.7-liter, single-cylinder diesel engine that has been modified to provide extensive optical access to the combustion chamber. Researchers apply advanced imaging, laser-based, and conventional diagnostics to gain a fundamental understanding of the detailed in-cylinder mixing and combustion processes...

High school engineering students visit CRF
Post, March 9, 2021 • Livermore High School science teacher Karen Fletcher and 12 sophomore students from the Green Engineering Academy got to see applied science in action during a Feb. 19, 2020, visit to Sandia’s California campus. Students met several Sandia engineers who shared their combustion research expertise. James Siacunco talked about his career...

High-Pressure FAGE
Page • High Pressure Fluorescence Assay for Gas Expansion (FAGE) for quantification of short-lived reaction intermediates Figure 1 High-pressure laminar flow reactor, coupled to FAGE detection chamber Technical Details Many important gas-phase processes, such as combustion or the atmospheric processing of pollutants, are complex networks of chemical reactions that occur simultaneously and involve...

Hydrogen
Page • Sandia National Laboratories contributes to the science of advanced hydrogen and fuel cell (H2FC) technologies by providing a deep, quantitative understanding and scientific basis for materials and safety. Through its H2FC program, Sandia researches and develops methods to discover materials for hydrogen production, storage and use, evaluating their properties and...

Imaging of Ions and Electrons for Study of Chemical Reactivity
Page • Technical Details Figure 1 Ion imaging was first demonstrated at Sandia National Labs in 1987 by a collaborative research effort between Dr. David Chandler (Sandia) and Dr. Paul Houston (Cornell University). Since then, more than 100 other laboratories have adopted this technique for the study of photochemistry, bimolecular reactivity, energy...

Imaging the Near-Surface Gas Phase
Page • Figure 5 The chemical reactivity of gases with solid surfaces is ubiquitous in natural and industrial energy transformation. Cooperative effects that couple gas phase chemistry with surface chemistry are critical for foundational understanding, but they prove challenging to probe experimentally and theoretically. Heterogenous catalysis is an ideal field in which...

In Memory of Jim Miller
Post, November 23, 2021 • Jim Miller In Memoriam: Jim Miller (1946–2021) Jim Miller dedicated his life to science while never losing either his warmth and interest in the people around him or his interest in the world. A theorist and research scientist, Jim was known as one of the early developers of CHEMKIN, the...
Combustion Research Facility

Integrated Test Capabilities
Page • Building on the strong expertise in diagnostics techniques for elementary processes, described in other sections of Experimental Capabilities, the CRF is a leader in combining multiple advanced diagnostics to completely characterize complex systems and in applying diagnostics to the challenging environments that occur in real-world energy technologies. This approach leads to...

Isaac Wesley Ekoto
Staff Page • Manager, Engine Combustion. Biography Isaac Ekoto earned his PhD in Aerospace Engineering at Texas A&M University in 2006. Isaac has been at Sandia National Laboratories since 2007 where he has worked on projects related to diesel engine combustion and hydrogen safety. He currently is the Principal Investigator of the Gasoline...

Jackie Chen
Staff Page • Senior Scientist, Chemistry, Combustion and Materials Science Center. Biography Jacqueline H. Chen has contributed broadly to research in direct numerical simulations (DNS) of turbulent combustion focusing on fundamental turbulence-chemistry interactions relevant to engines. She is also developing a mesoscopic and continuum simulation framework to understand how nonequilibrium chemical processes affect...

Jonathan H. Frank
Staff Page • Distinguished Member of Technical Staff, Combustion Research Facility, Reacting Flows. Biography As the Principal Investigator of the Advanced Imaging Laboratory, Jonathan Frank has extensive experience in the development and application of laser diagnostics for multidimensional imaging of chemically reacting flows. As a leader in his field, he has made important...

Judit Zádor
Staff Page • Theoretical Chemical Kinetics . Biography Judit joined Sandia in 2007 and is currently a Distinguished Member of Staff. Her research lies in the broad field of theoretical reaction kinetics, and addresses problems in combustion, atmospheric chemistry, and heterogeneous catalysis. She works on automated kinetics calculations and leads the development of...

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

Julien Luc Manin
Staff Page • Principal Member of the Technical Staff, Applied Combustion. Biography Dr. Manin obtained his MSc degree in Mechanical Engineering and in Automotive and Transportation Systems in France, in 2006. He completed his PhD in Physics and Mechanical Engineering at the Polytechnic University of Valencia, Spain, in 2011. Dr. Manin has been...

Kinetics of Elusive Intermediates
Page • Complex chemical reaction networks like those that occur in combustion and in atmospheric chemistry can contain thousands of interlocked chemical transformations. Frequently, important aspects of the overall chemistry depend on a few key reactions, for example, the chain-branching reactions that increase the number of reactive free radicals and drive hydrocarbon...

Kinetics of Hydrocarbon Oxidation
Page • Technical Details Figure 1 Oxidation turns hydrocarbons into water and carbon dioxide through an interconnected web of reactions. The hydrocarbon’s molecular structure and the conditions of oxidation, such as temperature, pressure, and composition, profoundly impact phenomena ranging from air quality to engine performance. In this aspect of our chemical physics...

Krupa Ramasesha
Staff Page • Principal Member of Technical Staff, CRF, Gas Phase Chemical Physics. Biography Krupa Ramasesha is a Principal Investigator at Sandia National Laboratories, Livermore, where she is leading a research program investigating ultrafast dynamics in gas phase and condensed phase systems, funded by the DOE/BES Gas Phase Chemical Physics Program and the...

Laser Diagnostics for Cryogenic Gas Releases
Page • Technical Details Figure 1 Research and development efforts both inside and outside the Labs are aimed at providing a fundamental understanding of cryogenic hydrogen dispersion and flames. Experiments are used to validate models that are, in turn, used to inform safety, codes and standards for infrastructure that uses liquid hydrogen,...

Laser-heated Stagnation Flow Reactor (LSFR)
Page • Figure 1 Figure 1 Shown here is the virtually accessible laser-heated stagnation flow reactor (LSFR) for characterizing redox chemistry of materials under extreme conditions. The LSFR is equipped with a solid-state laser to replicate the high energy flux and rapid heating rates that materials encounter in a concentrating solar reactor....

Laura M. McCaslin
Staff Page • Senior Member of the Technical Staff, Combustion Research Facility. Biography Laura M. McCaslin is a Senior Member of the Technical Staff in the CRF at Sandia.  Her research program centers on computing the dynamics of molecular systems and materials.  Her research program spans many areas, including atmospheric chemistry, photochemistry, quantum...
Image of Laura Marie McCaslin

Long-Path Absorption
Page • Sensitive cavity-enhanced absorption spectrometry for gas-phase chemical kinetics Figure 1 (Left) SULI intern Zachary Decker operates the time-resolved broadband cavity-enhanced absorption spectrometer under the mentorship of PI Leonid Sheps. (Right) The time-resolved UV absorption spectrum of Criegee intermediate CH2OO Technical Details Absorption of photons from the IR to the UV...

Low-Temperature Gasoline Engine Combustion Laboratory
Page • Low-temperature gasoline combustion (LTGC) strategies encompass both homogeneous and stratified charge compression ignition (HCCI and SCCI) combustion  technologies. These technologies achieve high, diesel-like efficiencies and very low emissions of NOx and particulate. In an LTGC engine, the piston compresses a dilute, premixed fuel/air charge that autoignites and burns volumetrically. The charge...

Lyle M. Pickett
Staff Page • Distinguished Member of Technical Staff, Engine Combustion Research. Biography Since 2002, Lyle Pickett has been the Principal Investigator for the Spray Combustion project in the Engine Combustion Research Department of the Combustion Research Facility at Sandia National Laboratories in Livermore, California. Lyle graduated from the University of Wisconsin–Madison with a...
Results 51–75 of 120