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Experimental Study on Diffusion Field with Series-Parallel Reaction in Liquid Grid-Turbulence

Takashi Kubo
Department of Mechanical Science and Engineering, Nagoya University Nagoya 464-8603, Japan

Yasuhiko Sakai
Department of Mechanical Science and Engineering, Nagoya University, Nagoya, 464-8603, Japan

Satoshi Honda
Department of Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

Abstrakt

A diffusion field with a series-parallel reaction (A + B → R and R + B → S) in liquid grid-turbulence has been experimentally investigated. The instantaneous concentrations of two reactive species (R and S) and a nonreactive dye (conserved scalar) are measured simultaneously by the light absorption spectrometric method. The concentrations of species A and B are determined by the conservation law.
It is found that the mean concentrations of reactants A and B decrease and those of products R and S increase in the downstream direction by a chemical reaction. Furthermore, the correlation coefficient between species A and B has a negative value in the present measurement region and it increases in the downstream direction, while the correlation coefficient between species B and R has a positive value and it gradually decreases.