Issue |
EPJ Web Conf.
Volume 264, 2022
EFM21 – 15th International Conference “Experimental Fluid Mechanics 2021”
|
|
---|---|---|
Article Number | 01036 | |
Number of page(s) | 4 | |
Section | Contributions | |
DOI | https://doi.org/10.1051/epjconf/202226401036 | |
Published online | 11 July 2022 |
https://doi.org/10.1051/epjconf/202226401036
Preliminary measurements of the thermal field in a rectangular channel by the Planar Laser-Induced Fluorescence method
1
Technical University of Liberec, Studentská 2, 460 01 Liberec Czech Republic
2
Institute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 5, 182 00 Prague Czech Republic
* Corresponding author: jaroslav.pulec@tul.cz
Published online: 11 July 2022
This paper describes the preliminary measurements of the temperature field in water channel by the Planar Laser-Induced Fluorescence (pLIF) method in the one-colour mode using commercial LaVision system. The aim of the work is to find suitable parameters of the experiment (concentration of fluorescent dye, laser power, arrangement of the experiment, etc.) for measuring the temperature field in a closed glass channel of rectangular cross-section with a heated bottom-wall and to verify an applicability of this method in general. The intention is to carry out measurements in the transverse plane of the duct such that the specific thermos-convective structures of the Rayleigh-Bénard-Poiseuille convection, i.e. mixed convection, are detected. For simplicity, the initial measurements were performed in the natural convection regime, i.e. the water in the channel was not driven by the circulation pump. In this case, a larger temperature gradient was created near the wall compared to the force convection case when a cold liquid flows continuously into the experimental area. The presented work serves as a methodological guide for future measurements and provides valuable experience for the design of a new channel for investigation of the thermal flow instabilities.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.