Probability density function of temperature in a circular-cylinder turbulent wake | Zendy

Ge Yang-Zhen | Zendy; Jianchun Mi | Zendy

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Probability density function of temperature in a circular-cylinder turbulent wake

Author(s) -

Ge Yang-Zhen,

Jianchun Mi

Publication year - 2013

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.62.024702

Subject(s) - wake , reynolds number , turbulence , cylinder , mechanics , probability density function , physics , materials science , geometry , mathematics , statistics

In this article, we report on an experimental research on the probability density function (PDF) of temperature measured in the wake of a circular cylinder slightly heated and its relationships with the turbulent mixedness under different Reynolds numbers (1200-8600). The temperature is measured by a probe of cold-wire with 0.63-m in diameter. Results show that the temperature PDF varies significantly with location in the wake. An increase in Reynolds number speeds up this variation, particularly accelerates the evolution from totally non-Gaussianity to near-Gaussianity along the wake centreline.

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