Abstract
Conditional statistics, conditioned on mixture fraction, are experimentally investigated in a planar liquid jet with a second-order chemical reaction A + B → R. Here, reactants A and B are separately premixed into the jet and the ambient flows, respectively. In this study, instantaneous concentrations of reactive species are simultaneously measured by an optical fiber probe based on the light absorption spectrometry to investigate the conditional statistics, conditioned on mixture fraction. The results show that the conditional mean concentration of reactive species and the conditional mean reaction rate are independent of the lateral position of the jet flow in the downstream region, whereas they change with the lateral position in the upstream region near the jet centerline.
