RESEARCH INTO NONISOTHERMAL JETS FROM VENTILATING OUTLETS USING A MACH-ZEHNDER INTERFEROMETER

摘要

This paper deals with the application of interferometry in research on nonisothermal air jets. The research was carried out using scale models with a Mach—Zehnder interferometer and our own software, Interfer—Visual. The paper contains examples of visualized non-isothermal jets from outlets in free spaces and spaces containing barriers. The results comprise interferograms of jets and flow fields, which provide both qualitative and quantitative information about air jets. The focus is above all on the evaluation of air jet shapes, temperatures in jets and enthalpy in jets, allowing the specification of many other parameters. The data obtained are useful for a more profound understanding of air jets, as well as for practical use in the field of ventilation, air conditioning and warm-air heating.