Study of Condensation Jet by using Wavelets Analysis and Laser Light Sheet Method

Abstract

This experimental study aims at investigating the influence of the condensed particle in the free turbulent shear layer under the jet diffusion process. Chilling dry air is discharged from a round nozzle into the high humidity environment. The air issues from the round nozzle of 10 mm in diameter into the measuring section. For velocity measurement, the laser LDV is used as the forward-scattering mode. It is observed from the visualization photograph that that condensed particles exists around the free shear layer. From the measurement the particle increase and spreads toward surroundings as the humidity rises. The mean velocity and fluctuating velocity decrease as the increase of condensed particle number. The characteristics of condensation jet are denoted from the above measurement results.