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Leaner Lifted-Flame Combustion: An ideal companion for biofuels

Post, July 31, 2012 • When Aristotle said that the whole is greater than the sum of its parts, he probably wasn’t thinking of engines and biofuels. But his famous quote applies perfectly to the synergy between Leaner Lifted-Flame Combustion (LLFC) and oxygenated biofuels. Each technology has its own limitations, but combining the two may...
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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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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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Of blackboards and computer screens: scientific programming in the 21st century

Post, May 17, 2011 • Since he was a college student, Damian Rouson has been fascinated by the intersection of science and computing. Computers have transformed scientific research, yet the fields still exist on separate planes. He takes on the challenge of rendering computer languages, so vital to scientific advancements, more expressive and easier to...

Sandia debuts the Livermore Valley Open Campus website

Post, May 22, 2012 • Through an exciting partnership between two Department of Energy national laboratories, Sandia National Laboratories and Lawrence Livermore National Laboratory, the Livermore Valley Open Campus (LVOC) was recently established as a space for open, collaborative work in areas such as bioscience, cyber security, detection technologies, and hydrogen applications. The newly-opened LVOC is a 110-acre campus that brings...

Sandia experts lead technical investigation of hydrogen release incident

Post, October 12, 2012 • Hydrogen experts at Sandia/California were tapped for their technical expertise through a first-ever contract with the state of California to investigate a May 4 hydrogen release at the Bay Area’s Alameda-Contra Costa Transit District (AC Transit) hydrogen fueling station in Emeryville, CA. Based on the outcome of that investigation, on...
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Sandia Hosts Friends and Family Day

Post, June 20, 2012 • Last month, Sandia/California vice president Rick Stulen hosted a Family and Friends Day so that researchers could share their work and achievements with those close to them. Over 1,100 visitors participated. Several CRF staff members were on hand to greet them, including researcher Mark Musculus, who kindly toured visitors through...

Sandia’s Summer Institute

Post, August 26, 2011 • Technology and Policy Tools for Energy in an Uncertain World On August 8, Sandia launched a new cross-discipline week-long research program for top graduate students from the nation’s premier universities. At the Sandia Summer Institute (SSI), twenty-one enthusiastic graduate students met to collaborate in small teams, working side-by-side with leading...

Sandia/CA receives joint awards with LLNL for environmental stewardship

Post, July 24, 2012 • This summer, the National Nuclear Security Administration (NNSA) announced the Pollution Prevention (P2) awards, given to national laboratories and sites for innovative efforts in environmental stewardship. Sandia/CA received recognition for two of our efforts that were conducted jointly with Lawrence Livermore National Laboratory (LLNL). The first award went to the...

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...

Student Interns Return to the CRF

Post, August 30, 2011 • This summer’s interns include (left to right) Romina Rodiguez, Nathan Greco, Daniel Nilson, Cassandra Janakos, Alexander Lloyd, Calvin Ball, Mari Sanchez, and Matthew Morabito (not pictured). The Summer Technical Student Internship Program at Sandia National Laboratories provides opportunities for undergraduate and graduate students majoring in science, math, engineering, and other...

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...

The CRF Hosts the Livermore Rotary Club

Post, August 14, 2012 • Transportation Energy Center Director Bob Carling recently hosted a visit of nearly 100 members of the Livermore Rotary Club. Dr. Carling presented an overview of the Livermore Valley Open Campus and of the work done at Sandia/CA. CRF researchers then conducted tours of the Computational Combustion and Chemistry Lab, the...

The CRF Participates in 2012 DOE Annual Merit Review

Post, July 3, 2012 • Various staff members from the CRF participated in the 2012 U.S. Department of Energy (DOE) Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting (AMR). The AMR is sponsored by the Hydrogen and Fuel Cells Program and the Vehicle Technologies Program. CRF researchers...

Thermochemical integration key to improving the efficiency of bio-ethanol production

Post, May 16, 2011 • A recently concluded CRF study as revealed the important role of combustion in the efficient operation of cellulosic ethanol plants for producing  biofuels. Unlike ‘first-generation’ ethanol derived from the fermentation of sugar or starch sources (such as corn), future production of ethanol in the United States is expected (and indeed...
Figure 2. Schematic of the modeled, prototypical lignocellulosic biochemical ethanol plant utilizing separate enzymatic hydrolysis and fermentation steps.|Figure 1. Typical composition of a softwood tree, in this case hybrid poplar.|Figure 3. Energy inputs and outputs (on the basis of lower heating value, left pie chart) and exergy inputs and outputs (right pie chart) for the conventional technology biochemical process design case.

Turbulent Jet Flame Database Generated for Sooty Fuels

Post, August 30, 2011 • Figure 1. Design drawings of burner (a and b), showing the central fuel tube surrounded by a perforated plate that supports small pilot flames for stabilizing high-speed flames. Photograph (c) of pilot flames and the base of an ethylene jet flame. The CRF has a long and distinguished history of...

UTRC and CRF researchers discuss turbine engines

Post, June 11, 2012 • On April 23, a group of combustion researchers from the United Technologies Research Center (UTRC) visited the CRF. Led by manager Dr. Catalin Fotache, the UTRC researchers met with senior managers Art Pontau and Andy McIlroy, manager Daniel Dedrick, and others to speak about experimental diagnostics, modeling and simulation with...

Working Toward Success: A Look at the Engine Combustion Network

Post, October 12, 2012 • American industrialist Henry Ford once said, “If everyone is moving forward together, then success will take care of itself.” Ford was no doubt speaking on the basis of his business expertise but some 150 years later, his ideas of success are still in motion at the Combustion Research Facility (CRF)....
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Results 26–44 of 44