均一な平均せん断流中の連続点源物質拡散に関する研究 : 第2報,濃度変動強度の特性について

概要

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The turbulent diffusion process of dye solution has been examined experimentally in the case of a continuous point source in the water turbulent flows with three different uniform mean shear rates. In this paper, the experimental results of the concentration fluctuatin intensity are investigated. Already, the characteristics of the mean concentration field have been reported in ref. (1). The data show that the horizontal and vertical profiles of the r.m.s. values of the concentraiton fluctuation appear nearly similar and especially, vertical profiles skew to the side with the smaller flow velocity. The above characteristics are the same as the results of the mean concentration field. Further, by using the random rectangular wave model for the concentration fluctuating signal, an analysis for the concentration fluctuation intensity is made. The caluculated profiles expressed quite well the experimental results.
社団法人日本機械学会の論文
1985-08-25