Mixture fraction field in a turbulent nonreacting propane jet

R. W. Schefer; R. W. Dibble

doi:10.2514/2.1271

Mixture fraction field in a turbulent nonreacting propane jet

R. W. Schefer^*, R. W. Dibble

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Time- and space-resolved mixture fraction measurements have been made throughout a turbulent nonreacting propane jet issuing into coflowing air using laser Rayleigh scattering. The objective of the measurements has been to obtain a better understanding of the flow structure and mixing process in turbulent variable-density jets where turbulent mixing has been decoupled from the effects of chemical heat release found in highly exothermic reacting jets. The measurements yield probability density distributions of the mixture fraction, from which the means, higher moments, and intermittency are calculated. Time histories of the Rayleigh signal are analyzed to obtain the power spectra and autocorrelations. Comparisons are made with results for other constant- and variable-density turbulent jets, and the observed differences are discussed.

Original language	English (US)
Pages (from-to)	64-72
Number of pages	9
Journal	AIAA journal
Volume	39
Issue number	1
DOIs	https://doi.org/10.2514/2.1271
State	Published - Jan 2001
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering

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10.2514/2.1271

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abstract = "Time- and space-resolved mixture fraction measurements have been made throughout a turbulent nonreacting propane jet issuing into coflowing air using laser Rayleigh scattering. The objective of the measurements has been to obtain a better understanding of the flow structure and mixing process in turbulent variable-density jets where turbulent mixing has been decoupled from the effects of chemical heat release found in highly exothermic reacting jets. The measurements yield probability density distributions of the mixture fraction, from which the means, higher moments, and intermittency are calculated. Time histories of the Rayleigh signal are analyzed to obtain the power spectra and autocorrelations. Comparisons are made with results for other constant- and variable-density turbulent jets, and the observed differences are discussed.",

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AB - Time- and space-resolved mixture fraction measurements have been made throughout a turbulent nonreacting propane jet issuing into coflowing air using laser Rayleigh scattering. The objective of the measurements has been to obtain a better understanding of the flow structure and mixing process in turbulent variable-density jets where turbulent mixing has been decoupled from the effects of chemical heat release found in highly exothermic reacting jets. The measurements yield probability density distributions of the mixture fraction, from which the means, higher moments, and intermittency are calculated. Time histories of the Rayleigh signal are analyzed to obtain the power spectra and autocorrelations. Comparisons are made with results for other constant- and variable-density turbulent jets, and the observed differences are discussed.

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Mixture fraction field in a turbulent nonreacting propane jet

Abstract

ASJC Scopus subject areas

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