2020/04/17 by Amayu W. Gena, Amayu Wakoya Gena, Conrad Voelker +1 · 1 citation
Engineering · Environmental Science · #Aerodynamics and Acoustics in Jet Flows #Fluid Dynamics and Turbulent Flows #Wind and Air Flow Studies
paper · doi:10.1111/ina.12674
openalex publication_date 2020/04/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
A new large-field, high-sensitivity, single-mirror coincident schlieren optical instrument has been installed at the Bauhaus-Universität Weimar for the purpose of indoor air research. Its performance is assessed by the non-intrusive measurement of the thermal plume of a heated manikin. The schlieren system produces excellent qualitative images of the manikin's thermal plume and also quantitative data, especially schlieren velocimetry of the plume's velocity field that is derived from the digital cross-correlation analysis of a large time sequence of schlieren images. The quantitative results are compared with thermistor and hot-wire anemometer data obtained at discrete points in the plume. Good agreement is obtained, once the differences between path-averaged schlieren data and planar anemometry data are reconciled.