Simultaneous measurements of instantaneous concentrations of two reacting species in a turbulent flow with a rapid reaction

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Abstract
An original technique is developed to measure simultaneously the instantaneous concentrations of two reacting species being mixed and reacted in a turbulent flow with a second‐order rapid reaction between acetic acid and ammonium hydroxide. The technique combines laser fluorescence and electrode‐conductivity methods and it enables simultaneous measurements of concentrations of two reacting species with a spatial resolution much less than the concentration–dissipation scale in grid‐generated tubulence.