| Issue |
E3S Web Conf.
Volume 321, 2021
XIII International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2021)
|
|
|---|---|---|
| Article Number | 02008 | |
| Number of page(s) | 6 | |
| Section | Energy | |
| DOI | https://doi.org/10.1051/e3sconf/202132102008 | |
| Published online | 11 November 2021 | |
Application of RQA and SOM for identification of two-phase flow patterns during boiling in horizontal minichannel
Department of Mechanics and Applied Computer Science, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45 C, 15-351 Bialystok, Poland
* Corresponding author: h.grzybowski@pb.edu.pl
In the paper, numerical methods of data analysis recurrence quantification analysis (RQA) and self-organizing map (SOM) have been used to analyse pressure drop oscillations during the flow boiling in minichannel. The performed analysis allows us to identify flow patterns based on the character of the pressure drop oscillations. The following two-phase flow patterns have been identified: liquid flow, liquid flow with small vapour bubble, slug flow, long slug flow and confined bubble flow. In the experiment, the open-loop boiling system in a circular horizontal minichannel with an inner diameter of 1 mm was investigated. The two-phase flow patterns at the outlet of the heated section were observed through the glass tube (with an inner diameter of 1 mm) and recorded by a high-speed camera Phantom v1610.
© The Authors, published by EDP Sciences, 2021
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