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Proceedings Paper

Experimental research of hydroluminescence in the cavitating flow of mineral oil
Author(s): Ihor V. Nochnichenko; Alexandr F. Luhovskyi; Oleg M. Jakhno; Dmytro V. Kostiuk; Paweł Komada; Ainur Kozbakova
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Paper Abstract

The paper presents the results of the study of flow in hydrodynamic cavitators. There was designed and manufactured models of hydrodynamic cavitation with various configuration for studying legitimacy appearance of cavitation. For their research, a stand was developed and created, which allows to obtain the flow characteristics of elements that are being tested and to visualize the flow in the throttling elements of the cavitators. The dependence of the discharge coefficient for the throttling element of the cavitator model on the Reynolds number is determined. The models of cavitators of various configurations are studied and pictures of the emerging cavitation are obtained by the method of visualization and the appearance of the luminescence phenomenon in a cavitating fluid flow is noted. On the basis of the obtained dependence for the coefficient of flow, a scheme with a mechatronic structure is proposed which provides a cavitation mode in the device when the working conditions change. The results of studies are analyzed and hypotheses of the appearance of luminescence based on similar physical phenomena and effects, which have a similar in nature and nature of radiation and spectrum according to the Planck diagram, are considered. Mathematical dependences of the flow coefficient on the Reynolds number and fluid flow on temperature and time are obtained.

Paper Details

Date Published: 6 November 2019
PDF: 8 pages
Proc. SPIE 11176, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, 1117615 (6 November 2019); doi: 10.1117/12.2536946
Show Author Affiliations
Ihor V. Nochnichenko, National Technical Univ. of Ukraine (Ukraine)
Alexandr F. Luhovskyi, National Technical Univ. of Ukraine (Ukraine)
Oleg M. Jakhno, National Technical Univ. of Ukraine (Ukraine)
Dmytro V. Kostiuk, National Technical Univ. of Ukraine (Ukraine)
Paweł Komada, Lublin Univ. of Technology (Poland)
Ainur Kozbakova, Institute of Information and Computational Technologies (Kazakhstan)
Almaty Univ. of Power Engineering and Telecommunications (Kazakhstan)

Published in SPIE Proceedings Vol. 11176:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019
Ryszard S. Romaniuk; Maciej Linczuk, Editor(s)

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