物理学报2013，Vol.62Issue(2)：385-390,6.DOI:10.7498/aps.62.024702
圆柱热尾流中温度的概率密度函数
Probability density function of temperature in a circular-cylinder turbulent wake
摘要
Abstract
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-μm 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.关键词
湍流尾流/被动标量/概率密度/频谱Key words
turbulent wake/ passive scalar/ probability density function (PDF)引用本文复制引用
戈阳祯,米建春..圆柱热尾流中温度的概率密度函数[J].物理学报,2013,62(2):385-390,6.
