Ultrafast Laser Diagnostics Development for Combustion

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Abstract:

In recent years, ultrafast laser technologies and spectroscopic techniques have been utilized for new, more powerful, techniques in the field of optical combustion diagnostics.  These developments have allowed us to pursue some of the most stubborn and experimentally challenging problems in combustion science, such as probing high pressure environments and important interfacial combustion processes.  In this talk I will present an overview of these recent developments, and discuss current projects in our laboratory.  In particular, I will focus on the development of coherent Raman imaging strategies in the gas phase.  As combustion is inherently a three-dimensional and spatially correlated process, detailed comparisons to numerical simulations require a higher degree of dimensionality in the measurement.  Ultimately, our aim is to provide new insights into the chemical mechanisms of flame-wall interactions and soot growth and oxidation which will inform combustion chemistry models and increase the fidelity of predictive numerical simulations of combustion devices, chemistry, and processes. In turn, such developments will lead to reduced pollutant formation, such as soot and unburned hydrocarbons, in practical devices.

Speaker: 
Chris Kliewer, Sandia National Laboratories
Location: 
Maeder Hall, ACEE
Date/Time: 
Friday, February 9, 2018 - 4:00pm
Faculty Host: 
Mueller

Speaker Bio

Christopher J. Kliewer is Principal Investigator and program leader for the ultrafast optical diagnostics laboratory at Sandia National Laboratories, Combustion Research Facility. He received his PhD from the University of California at Berkeley, working with Gabor Somorjai to develop nonlinear surface spectroscopy for the study of high pressure catalytic reactions. He was a postdoctoral appointee working with Roger Farrow and Tom Settersten at Sandia National Laboratories on gas-phase time-domain coherent spectroscopy. His research program has focused on developing new multidimensional nonlinear optical techniques and his innovations have made significant impacts in a wide range of disciplines, including surface science, combustion physics, and molecular physics. Among his honors and awards, he received the US Department of Energy Early Career Research Program Award. He has twice won the Distinguished Paper Award of the Combustion Institute. He has been invited to present at many international conferences and workshops, and his work routinely attracts international collaborations.
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