Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions

The pollution problems of water resources have affected the ecology of the Earth, especially the ecological environment of the oceans. In order to find a cheaper and cleaner organic wastewater treatment method and explore the effect of geometrical parameters and external parameters of self-excited o...

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Autores principales:	Fujian Zhao, Xiuli Wang, Wei Xu, Yuanyuan Zhao, Guohui Zhao, Han Zhu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	water pollution cavitation jet self-excited oscillation design optimization mathematical model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/c2cc355b7fa3496d8ed0cdf173222ad0
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id	oai:doaj.org-article:c2cc355b7fa3496d8ed0cdf173222ad0
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spelling	oai:doaj.org-article:c2cc355b7fa3496d8ed0cdf173222ad02021-11-25T18:03:44ZStudy on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions10.3390/jmse91111592077-1312https://doaj.org/article/c2cc355b7fa3496d8ed0cdf173222ad02021-10-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1159https://doaj.org/toc/2077-1312The pollution problems of water resources have affected the ecology of the Earth, especially the ecological environment of the oceans. In order to find a cheaper and cleaner organic wastewater treatment method and explore the effect of geometrical parameters and external parameters of self-excited oscillation on cavitation performance, apply it in engineering stably and efficiently, this study took the cavitation effect of self-excited oscillating cavitation jet nozzle as the research target and simulated the geometrical parameters and external parameters of the nozzle. The primary and secondary relationship of the effect of all parameters on cavitation performance was summarized by analyzing the correlation and partial correlation of each parameter. Subsequently, principal component analysis (PCA) was conducted to build a mathematical model of self-excited oscillating cavitation jet nozzle suitable for multiphase transport. As revealed from the results, the contribution rate of parameters to vapor volume fraction followed the order of C<sub>LD</sub> > d<sub>1</sub> > C<sub>d21</sub> > C<sub>Dd2</sub> > <i>P<sub>in</sub></i>. The ratio of outlet diameter to inlet diameter (C<sub>d21</sub>) of the self-excited oscillating cavitation jet nozzle significantly impacted the volume fraction of cavitation vapor (VOF) due to the change of particle diameter, while the influence of other design parameters on VOF was not significant with the change of particle diameter. The larger the content of solid particles, the less the VOF would be impacted by the design parameters. Under the solid particle content of 10% and the particle diameter of 0.2 mm, an independent working point was obtained. In addition, after experimental verification, it was found that the slope of experimental fitting was basically the identical to the corresponding coefficient of parameters in the model. This model and the self-excited nozzle with good cavitation performance provide a theoretical basis for solving the problem of water pollution.Fujian ZhaoXiuli WangWei XuYuanyuan ZhaoGuohui ZhaoHan ZhuMDPI AGarticlewater pollutioncavitation jetself-excited oscillationdesign optimizationmathematical modelNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1159, p 1159 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	water pollution cavitation jet self-excited oscillation design optimization mathematical model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	water pollution cavitation jet self-excited oscillation design optimization mathematical model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Fujian Zhao Xiuli Wang Wei Xu Yuanyuan Zhao Guohui Zhao Han Zhu Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
description	The pollution problems of water resources have affected the ecology of the Earth, especially the ecological environment of the oceans. In order to find a cheaper and cleaner organic wastewater treatment method and explore the effect of geometrical parameters and external parameters of self-excited oscillation on cavitation performance, apply it in engineering stably and efficiently, this study took the cavitation effect of self-excited oscillating cavitation jet nozzle as the research target and simulated the geometrical parameters and external parameters of the nozzle. The primary and secondary relationship of the effect of all parameters on cavitation performance was summarized by analyzing the correlation and partial correlation of each parameter. Subsequently, principal component analysis (PCA) was conducted to build a mathematical model of self-excited oscillating cavitation jet nozzle suitable for multiphase transport. As revealed from the results, the contribution rate of parameters to vapor volume fraction followed the order of C<sub>LD</sub> > d<sub>1</sub> > C<sub>d21</sub> > C<sub>Dd2</sub> > <i>P<sub>in</sub></i>. The ratio of outlet diameter to inlet diameter (C<sub>d21</sub>) of the self-excited oscillating cavitation jet nozzle significantly impacted the volume fraction of cavitation vapor (VOF) due to the change of particle diameter, while the influence of other design parameters on VOF was not significant with the change of particle diameter. The larger the content of solid particles, the less the VOF would be impacted by the design parameters. Under the solid particle content of 10% and the particle diameter of 0.2 mm, an independent working point was obtained. In addition, after experimental verification, it was found that the slope of experimental fitting was basically the identical to the corresponding coefficient of parameters in the model. This model and the self-excited nozzle with good cavitation performance provide a theoretical basis for solving the problem of water pollution.
format	article
author	Fujian Zhao Xiuli Wang Wei Xu Yuanyuan Zhao Guohui Zhao Han Zhu
author_facet	Fujian Zhao Xiuli Wang Wei Xu Yuanyuan Zhao Guohui Zhao Han Zhu
author_sort	Fujian Zhao
title	Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
title_short	Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
title_full	Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
title_fullStr	Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
title_full_unstemmed	Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions
title_sort	study on different parameters of the self-excited oscillation nozzle for cavitation effect under multiphase mixed transport conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c2cc355b7fa3496d8ed0cdf173222ad0
work_keys_str_mv	AT fujianzhao studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions AT xiuliwang studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions AT weixu studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions AT yuanyuanzhao studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions AT guohuizhao studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions AT hanzhu studyondifferentparametersoftheselfexcitedoscillationnozzleforcavitationeffectundermultiphasemixedtransportconditions
_version_	1718411705495584768

Study on Different Parameters of the Self-Excited Oscillation Nozzle for Cavitation Effect under Multiphase Mixed Transport Conditions

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