Energy and Climate

Sensors & Optical Diagnostics

Predicting Pressure-Dependent Combustion Chemical Reactions

Researchers at Sandia and Argonne national laboratories have demonstrated, for the first time, a method to successfully predict pressure-dependent chemical reaction rates—an important breakthrough in combus­tion and atmospheric chemistry that is expected to benefit auto and engine manufacturers, oil and gas utilities, and other industries that employ combustion models. A paper describing the work, performed […]

New Polarized-Depolarized Measurement Capability Extends Use of Raman/Rayleigh Methods to More Flame Types

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 Combustion Research Facility (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 this method’s utility. Such fluorescence […]

CRF Article Chosen by The Journal of Chemical Physics to Commemorate 80th Anniversary

A 2012 article by CRF researchers David Chandler (in Sandia’s Transportation Energy Center) and the late Kevin Strecker, “Dual-etalon frequency-comb cavity ringdown spectrometer,” was chosen by The Journal of Chemical Physics as one of 80 articles to highlight the 80 years of outstanding work published in the journal. “I am honored that this paper was […]

Sandia Maps Multiple Paths to Cleaner, Low-Temp Diesels

A few years ago, the automotive and engine industries presented researchers at Sandia National Laboratories with a mystery. Notably, the companies did so separately, each approaching their national-lab research partners at the Combustion Research Facility (CRF) in Livermore, California, with in-house lab engine test results that none of their highly experienced experts had yet encountered. […]

Optimizing Engines for Alternative Fuels

At Sandia’s Alternative Fuels Direct-Injection Spark Ignition (DISI) Engine Lab, Combustion Research Facility researchers Magnus Sjöberg and Wei Zeng, together with Dave Reuss at the University of Michigan, are developing the fundamental understanding needed by industry to design and optimize engines for alternative fuels. The current focus is on flex-fuel engines that can run on […]

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