Experimental studies in vortex pair motion coincident with a liquid reaction

Abstract

An experimental examination of the coincidence of a liquid reaction (acid/base) with the formation of a vortex pair structure is described in which emphasis is placed on the evolution of the strained diffusion layer and reacted core structures. Flow visualization of the reaction process is achieved via the technique of chemically sensitive laser-induced fluorescence. The observed growth of reacted core structures associated with each vortex is compared with theoretically predicted behavior published recently [Recent Advances in the Aerospace Sciences (Plenum, New York, 1985), p. 395; Combust. Sci. Technol. 49, 185 (1986)]. Vortex pair separation is also compared with theoretical correlations, and the relevance of the analogy between a fast liquid reaction (Sc≫1) and a gaseous reaction (Sc∼1) is discussed.