C242 界面活性剤添加による抵抗低減流れ中の温度境界層における乱流熱流束の統計的分析

概要

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Statistical characteristics of turbulent heat transport in the thermal boundary layer of a drag-reducing surfactant solution flow in a two-dimensional channel have been experimentally studied, by simultaneously measuring the velocity and temperature fluctuations. Statistical analysis was carried out for the following terms : temperature fluctuations, turbulent heat fluxes in the streamwise and wall-normal directions, turbulence production of temperature variance, eddy diffusivities and turbulent Prandtl number. Influenced by the drag-reducing additives, the wall-normal turbulent heat flux was significantly depressed, causing depression of turbulent production of temperature variance and thermal eddy diffusivity.
一般社団法人日本機械学会の論文
2003-11-10