Application of rainbow schlieren deflectometry for axisymmetric supersonic jets (comparison of experiments with numerical analysis)

Abstract

This paper analyzes the correctly-expanded supersonic jet from a convergent-divergent axisymmetric nozzle by using numerical simulation of turbulent flow. And the calculated density distributions in this flow are compared with the present experimental data using rainbow schlieren deflectometry. The value of the density from the experimental data agrees well with the results calculated by this simulation. Therefore, the present method of the measurement using rainbow schlieren deflectometry is useful for the measurement of the density of the correctly-expanded supersonic jet.