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Title: Investigation of time dependent flame structure by ionization probes

Abstract

Ionization probes have been used to measure mean ionization current and frequency spectra, auto-correlations and cross-correlations in jet flames with variation in the initial Reynolds numbers and equivalence ratios. Special attention as been paid to the transitional region between the burner exit plane and the plane of onset of turbulence. Evidence of a double vortex structure was found, wtih low velocity large vortices at the outer part of the mixing layer and smaller, faster moving vortices on the inner side. These vortices distort the reaction zone and can thus be detected by the ionization probes. The transition to turbulence is indicated by the axial variations of auto-correlations and frequency spectra. 15 refs.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Univ of Sheffield, England
OSTI Identifier:
5313540
Report Number(s):
CONF-800809-
Journal ID: CODEN: SYMCA
Resource Type:
Conference
Journal Name:
Symp. (Int.) Combust., (Proc.); (United States)
Additional Journal Information:
Conference: 18. combustion symposium, Waterloo, Canada, 17 Aug 1980
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLAMES; MONITORING; TURBULENCE; ION PROBES; TIME DEPENDENCE; VORTICES; PROBES; 400800* - Combustion, Pyrolysis, & High-Temperature Chemistry

Citation Formats

Ventura, J M.P., Suzuki, T, Yule, A J, Ralph, S, and Chigier, N A. Investigation of time dependent flame structure by ionization probes. United States: N. p., 1981. Web.
Ventura, J M.P., Suzuki, T, Yule, A J, Ralph, S, & Chigier, N A. Investigation of time dependent flame structure by ionization probes. United States.
Ventura, J M.P., Suzuki, T, Yule, A J, Ralph, S, and Chigier, N A. 1981. "Investigation of time dependent flame structure by ionization probes". United States.
@article{osti_5313540,
title = {Investigation of time dependent flame structure by ionization probes},
author = {Ventura, J M.P. and Suzuki, T and Yule, A J and Ralph, S and Chigier, N A},
abstractNote = {Ionization probes have been used to measure mean ionization current and frequency spectra, auto-correlations and cross-correlations in jet flames with variation in the initial Reynolds numbers and equivalence ratios. Special attention as been paid to the transitional region between the burner exit plane and the plane of onset of turbulence. Evidence of a double vortex structure was found, wtih low velocity large vortices at the outer part of the mixing layer and smaller, faster moving vortices on the inner side. These vortices distort the reaction zone and can thus be detected by the ionization probes. The transition to turbulence is indicated by the axial variations of auto-correlations and frequency spectra. 15 refs.},
doi = {},
url = {https://www.osti.gov/biblio/5313540}, journal = {Symp. (Int.) Combust., (Proc.); (United States)},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}

Conference:
Other availability
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