Chaotic radiation/turbulence interactions in flames

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In this paper, the authors present a review of their recent efforts to model chaotic radiation-turbulence interactions in flames. The main focus is to characterize soot volume fraction fluctuations in turbulent diffusion flames, as they strongly contribute to these interaction. The approach is based on the hypothesis that the fluctuations of properties in turbulent flames are deterministic in nature, rather than random. The authors first discuss the theoretical details and then they briefly outline the experiments conducted to measure the scattered light signals from fluctuating soot particles along the axis of an ethylene-air diffusion flame. They compare the power spectra ... continued below

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25 p.

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Menguec, M.P. & McDonough, J.M. November 1, 1998.

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Description

In this paper, the authors present a review of their recent efforts to model chaotic radiation-turbulence interactions in flames. The main focus is to characterize soot volume fraction fluctuations in turbulent diffusion flames, as they strongly contribute to these interaction. The approach is based on the hypothesis that the fluctuations of properties in turbulent flames are deterministic in nature, rather than random. The authors first discuss the theoretical details and then they briefly outline the experiments conducted to measure the scattered light signals from fluctuating soot particles along the axis of an ethylene-air diffusion flame. They compare the power spectra and time series obtained from experiments against the ad-hoc and rigorous models derived using a series of logistic maps. These logistic maps can be used in simulation of the fluctuations in these type of flames, without extensive computational effort or sacrifice of physical detail. Availability of accurate models of these kinds allows investigation of radiation-turbulence interactions at a more fundamental level than it was previously possible.

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25 p.

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OSTI as DE99000275

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  • EUROTHERM seminar, Delphi (Greece), 1-3 Apr 1998

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  • Other: DE99000275
  • Report No.: DOE/PC/93210--T2
  • Report No.: CONF-980485--
  • Grant Number: FG22-93PC93210
  • Office of Scientific & Technical Information Report Number: 676990
  • Archival Resource Key: ark:/67531/metadc710636

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  • November 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 10, 2015, 8:31 p.m.

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Menguec, M.P. & McDonough, J.M. Chaotic radiation/turbulence interactions in flames, article, November 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc710636/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.