Joint probability densities and quadrant contributions in a heated turbulent kound jet

K. R. Sreenivasan; R. A. Antonia

doi:10.2514/3.60976

Joint probability densities and quadrant contributions in a heated turbulent kound jet

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Abstract

CONDITIONAL (turbulent) isodensity contours and cross sections of the joint probability density functions of the axial (θ) and radial (v) velocity fluctuations, and temperature fluctuation (0) are obtained in a slightly heated round jet with a coflowing external stream. Also obtained are the occupancy times in various quadrants and the quadrant contributions to average fluxes (uθ), (uθ), and (vθ). Comparison with corresponding quantities of the appropriate bivariate Gaussian density functions shows that departures from Gaussianity are less pronounced for the outward radial motion than for the inward radial motion associated with the possibly newly entrained fluid.

Original language	English (US)
Pages (from-to)	867-868
Number of pages	2
Journal	AIAA journal
Volume	16
Issue number	9
DOIs	https://doi.org/10.2514/3.60976
State	Published - Sep 1978

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Aerospace Engineering

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10.2514/3.60976

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title = "Joint probability densities and quadrant contributions in a heated turbulent kound jet",

abstract = "CONDITIONAL (turbulent) isodensity contours and cross sections of the joint probability density functions of the axial (θ) and radial (v) velocity fluctuations, and temperature fluctuation (0) are obtained in a slightly heated round jet with a coflowing external stream. Also obtained are the occupancy times in various quadrants and the quadrant contributions to average fluxes (uθ), (uθ), and (vθ). Comparison with corresponding quantities of the appropriate bivariate Gaussian density functions shows that departures from Gaussianity are less pronounced for the outward radial motion than for the inward radial motion associated with the possibly newly entrained fluid.",

author = "Sreenivasan, {K. R.} and Antonia, {R. A.}",

note = "Funding Information: The support of the Australian Research Grants Committee is gratefully acknowledged.",

year = "1978",

month = sep,

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language = "English (US)",

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AU - Sreenivasan, K. R.

AU - Antonia, R. A.

N1 - Funding Information: The support of the Australian Research Grants Committee is gratefully acknowledged.

PY - 1978/9

Y1 - 1978/9

N2 - CONDITIONAL (turbulent) isodensity contours and cross sections of the joint probability density functions of the axial (θ) and radial (v) velocity fluctuations, and temperature fluctuation (0) are obtained in a slightly heated round jet with a coflowing external stream. Also obtained are the occupancy times in various quadrants and the quadrant contributions to average fluxes (uθ), (uθ), and (vθ). Comparison with corresponding quantities of the appropriate bivariate Gaussian density functions shows that departures from Gaussianity are less pronounced for the outward radial motion than for the inward radial motion associated with the possibly newly entrained fluid.

AB - CONDITIONAL (turbulent) isodensity contours and cross sections of the joint probability density functions of the axial (θ) and radial (v) velocity fluctuations, and temperature fluctuation (0) are obtained in a slightly heated round jet with a coflowing external stream. Also obtained are the occupancy times in various quadrants and the quadrant contributions to average fluxes (uθ), (uθ), and (vθ). Comparison with corresponding quantities of the appropriate bivariate Gaussian density functions shows that departures from Gaussianity are less pronounced for the outward radial motion than for the inward radial motion associated with the possibly newly entrained fluid.

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Joint probability densities and quadrant contributions in a heated turbulent kound jet

Abstract

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