Influence of simulated solar radiation on the soot volume fraction in laminar sooty flames

Xue Dong, Graham J. Nathan, Zhiwei Sun, Dahe Gu, Peter J. Ashman, Zeyad Alwahabi, Bassam Dally

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper reports the first set of measurements of the influence of concentrated solar radiation on the soot volume fraction in a laminar sooty flame. Broad-band radiation at fluxes of up to 0.45 MW/m2 and wavelengths that simulate those in concentrated solar receivers was produced by a metal-halide lamp configured in a series of three optical concentrators to irradiate an entire Santoro-type laminar flame of 64 mm length. The soot volume fraction in the flame was measured using planar laser induced incandescence. The results show that there is a significant influence of the simulated concentrated solar radiation on the evolution of soot on the fuel-rich side of the flame. The soot volume enveloped by the flame is found to increase by up to 55% when a flame is irradiated by a solar simulator. In addition, the soot inception was translated upstream by 4 mm with simulated solar radiation compared with that without, while the consumption rate of soot remains the same for both cases.
Original languageEnglish (US)
Title of host publicationASPACC 2015 - 10th Asia-Pacific Conference on Combustion
PublisherCombustion Institute
StatePublished - Jan 1 2015
Externally publishedYes

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