A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability

The fluid leakage channel found in contact mechanical seals belongs to the microchannel category. Thus, upon further inspection, the influence of surface wettability and other factors neglected in previous studies becomes obvious. The porous leakage model of contact mechanical seals considering the...

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Autores principales:	Guangyao Bei, Chenbo Ma, Jianjun Sun, Xingya Ni, Yafei Ma
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	contact mechanical seal wettability leakage model porous medium slip length Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/412400a15770454b988f158566fd0663
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spelling	oai:doaj.org-article:412400a15770454b988f158566fd06632021-11-25T17:16:12ZA Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability10.3390/coatings111113382079-6412https://doaj.org/article/412400a15770454b988f158566fd06632021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1338https://doaj.org/toc/2079-6412The fluid leakage channel found in contact mechanical seals belongs to the microchannel category. Thus, upon further inspection, the influence of surface wettability and other factors neglected in previous studies becomes obvious. The porous leakage model of contact mechanical seals considering the surface wettability presented in this paper was based on the Cassie model and slip theory. The variations of the microchannel slip length and the velocity under various wettability conditions were studied and the relationship between the slip length and the apparent contact angle was established. Moreover, using porous media theory, the theoretical model of the leakage rate in contact mechanical seals considers the surface wettability depending on various parameters. The observed parameters included the surface contact angle, sealing medium pressure, viscosity coefficient, fractal dimension, and maximum pore diameter. The simulation results obtained using the proposed model have shown that the leakage rate increases with the increase of the apparent contact angle. Particularly when the contact pressure is small, the influence of the surface wettability is more significant. Furthermore, the leakage rate results obtained via the proposed model were compared to those of existing models. The comparison confirmed that the proposed model is applicable and that the necessity of considering wettability significantly affects the leakage rate calculation accuracy. The proposed model lays a foundation for further improving the calculation accuracy, making it easier for both the researchers and practitioners to suppress the leakage in contact mechanical seals.Guangyao BeiChenbo MaJianjun SunXingya NiYafei MaMDPI AGarticlecontact mechanical sealwettabilityleakage modelporous mediumslip lengthEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1338, p 1338 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	contact mechanical seal wettability leakage model porous medium slip length Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	contact mechanical seal wettability leakage model porous medium slip length Engineering (General). Civil engineering (General) TA1-2040 Guangyao Bei Chenbo Ma Jianjun Sun Xingya Ni Yafei Ma A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
description	The fluid leakage channel found in contact mechanical seals belongs to the microchannel category. Thus, upon further inspection, the influence of surface wettability and other factors neglected in previous studies becomes obvious. The porous leakage model of contact mechanical seals considering the surface wettability presented in this paper was based on the Cassie model and slip theory. The variations of the microchannel slip length and the velocity under various wettability conditions were studied and the relationship between the slip length and the apparent contact angle was established. Moreover, using porous media theory, the theoretical model of the leakage rate in contact mechanical seals considers the surface wettability depending on various parameters. The observed parameters included the surface contact angle, sealing medium pressure, viscosity coefficient, fractal dimension, and maximum pore diameter. The simulation results obtained using the proposed model have shown that the leakage rate increases with the increase of the apparent contact angle. Particularly when the contact pressure is small, the influence of the surface wettability is more significant. Furthermore, the leakage rate results obtained via the proposed model were compared to those of existing models. The comparison confirmed that the proposed model is applicable and that the necessity of considering wettability significantly affects the leakage rate calculation accuracy. The proposed model lays a foundation for further improving the calculation accuracy, making it easier for both the researchers and practitioners to suppress the leakage in contact mechanical seals.
format	article
author	Guangyao Bei Chenbo Ma Jianjun Sun Xingya Ni Yafei Ma
author_facet	Guangyao Bei Chenbo Ma Jianjun Sun Xingya Ni Yafei Ma
author_sort	Guangyao Bei
title	A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
title_short	A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
title_full	A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
title_fullStr	A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
title_full_unstemmed	A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability
title_sort	porous media leakage model of contact mechanical seals considering surface wettability
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/412400a15770454b988f158566fd0663
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A Porous Media Leakage Model of Contact Mechanical Seals Considering Surface Wettability

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