AM05-14-002 高シュミット数物質噴流拡散場の統計的特性に関する実験的研究(乱流熱物質移動および反応流1,一般講演)

概要

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In this paper, we report the results of simultaneous measurements of axial velocity and concentration in a liquid axisymmetric turbulent jet of high Schmidt number. The diffusing matter is a commercial dye (Sc≈3,800), and an issuing Reynolds number is about 11,000. In order to measure the velocity and diffusion field, a combined probe of I-type hot film and fiber-optic probe based on Lambert-Beer law was used. The joint and conditional statistics between velocity and concentration, and their derivative statistics were mainly examined. It is found that the conditional mean velocity <u/c> becomes linear to the concentration value in large part of the jet. The coherence of velocity and concentration shows a clear power law of -2, but the Reynolds number dependency in this power law can be expected. The derivative statistics of velocity and concentration are in agreement with other researcher's results.
日本流体力学会の論文
2005-09-05