Abstract
Using the triaxial thermoanemometer probe with a temperature sensor provided an experimental analysis of turbulent heat transfer in the recirculation zone of a confined jet. The measured raw data were analysed to obtain time-averaged characteristic of turbulence. The results allowed an evaluation of the turbulent heat flux components, which took their maximal values in the mixing region of primary and secondary streams. For better understanding of the heat transfer processes, a budget of turbulent heat flux was analysed, based on the derived equations presented in the cylindrical coordinate system. Applying derived equations and the measured turbulence characteristic, the values of particular components of heat flux budget were estimated and discussed. The heat and fluid flow data can be offered as a database for non-isothermal turbulent flow modelling.
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