Measurement of Transient Density Distribution Using Mach-Zehnder Interferogram Image

Abstract

In order to measure the transient density distribution of the exchange process caused by a negatively buoyant jet, an automatic and high-reliability system has been developed. The upward jet of air into a box with helium was visualized using the Mach-Zehnder interferogram. The VTR images of the Mach-Zehnder interferogram are automatically analyzed by an engineering work station, resulting in the desired two-dimensional transient density distribution. The stratification of air and helium was clarified from the measured density distributions.