Temperature fluctuations in the plane turbulent wake

Abstract

Results are presented of temperature measurements made in the slightly heated, plane turbulent wake at stations 400 and 500 diam downstream from a heated cylinder at a Reynolds number of 2800. The results include transverse distributions of the first four moments of the temperature obtained using both conventional and conditional sampling and averaging techniques, the downstream distribution of the root mean square temperature fluctuations on the wake centerline and the probability density function of the temperature. Additionally, there are obtained, as a function of distance from the interface, temperature moments which indicate that there is a definite thermal structure associated with the interface.