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Modeling of Rayleigh scattering imaging of detonation waves: Quantum computation of Rayleigh cross-sections and real diagnostic effects

Bechon, Guillaume and Mével, Rémy and Davidenko, Dmitry and Shepherd, Joseph E. (2015) Modeling of Rayleigh scattering imaging of detonation waves: Quantum computation of Rayleigh cross-sections and real diagnostic effects. Combustion and Flame, 162 (5). pp. 2191-2199. ISSN 0010-2180. http://resolver.caltech.edu/CaltechAUTHORS:20150420-135052038

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Abstract

A detailed Rayleigh scattering model has been implemented and used to post-process detonation wave numerical simulation results to allow for a direct comparison with previous experimental visualizations of detonations in hydrogen-based mixtures. A quantum chemistry approach has been employed to obtain realistic Rayleigh scattering cross-sections. A database of Rayleigh cross-sections for relevant species was created and validated against available experimental data. Steady one-dimensional as well as unsteady two-dimensional simulations of detonation were used for comparison with experimental Rayleigh profiles and images. We demonstrate that both realistic Rayleigh scattering cross-sections and the characteristics of the imaging system have to be taken into account to accurately reproduce the experimental results. We show how this approach can be applied to estimate the performance and design improved Rayleigh imaging systems. Rayleigh scattering appears to offer some advantages over other techniques for studying the structure of detonation waves both at and behind the front.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.combustflame.2015.01.016DOIArticle
http://www.sciencedirect.com/science/article/pii/S001021801500019XPublisherArticle
ORCID:
AuthorORCID
Shepherd, Joseph E.0000-0003-3181-9310
Additional Information:© 2015 The Combustion Institute. Published by Elsevier Inc. Received 15 January 2015; Received in revised form 15 January 2015; Accepted 21 January 2015; Available online 23 February 2015. The authors are grateful to Dr. T. Anderson, Institute for Defense Analyses, for allowing the reproduction of his work in Fig. 5.
Group:GALCIT
Subject Keywords:Detonation structure; Rayleigh scattering; DFT method
Record Number:CaltechAUTHORS:20150420-135052038
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150420-135052038
Official Citation:Guillaume Bechon, Rémy Mével, Dmitry Davidenko, Joseph E. Shepherd, Modeling of Rayleigh scattering imaging of detonation waves: Quantum computation of Rayleigh cross-sections and real diagnostic effects, Combustion and Flame, Volume 162, Issue 5, May 2015, Pages 2191-2199, ISSN 0010-2180, http://dx.doi.org/10.1016/j.combustflame.2015.01.016. (http://www.sciencedirect.com/science/article/pii/S001021801500019X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56783
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 Apr 2015 21:12
Last Modified:22 Sep 2016 22:31

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