円管内壁に滑らかな突起列を有する流れ場の乱流構造と熱伝達

概要

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Turbulent flow structure and heat transfer in a pipe with arc shaped cascade turbulence surface promoters are experimentally studied for applying to the thermoelectric ocean thermal energy conversion (OTEC). Mean velocities and turbulence properties such as turbulence energy and Reynolds shear stress are measured by the one color laser Doppler velocimeter with Bragg cell. To exactly measure the whole flow field, especially the one around the promoter, a glass tube with a smooth rib and water solution of sodium iodide having the same refrative index as the pipe material are used as the test section and the working fluid, respectively, to prevent the refraction of the laser beam at the interface between them. Relations among turbulence energy, Reynolds shear stress, pressure loss and local heat transfer conefficient are discussed on the basis of the experimental results for the different rib heights.
一般社団法人日本機械学会の論文
1984-10-25