Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow

This paper presents results of a theoretical analysis to determine the leakage flow and dynamic characteristics of circumferential wave geometry annular seals using turbulent lubrication theory. Turbulent lubrication equations based on an eddy viscosity model have been used to develop the turbulent...

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Autores principales:	Satyam Shivam Gautam, Mihir Kumar Ghosh
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2010
Materias:	wave seal turbulent lubrication leakage flow rotor dynamic behavior whirl ratio Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/cf218fef78b642fb9d050bc6e5de53ff
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id	oai:doaj.org-article:cf218fef78b642fb9d050bc6e5de53ff
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spelling	oai:doaj.org-article:cf218fef78b642fb9d050bc6e5de53ff2021-11-05T09:27:17ZDynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow1881-219810.2474/trol.5.7https://doaj.org/article/cf218fef78b642fb9d050bc6e5de53ff2010-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/5/1/5_1_7/_pdf/-char/enhttps://doaj.org/toc/1881-2198This paper presents results of a theoretical analysis to determine the leakage flow and dynamic characteristics of circumferential wave geometry annular seals using turbulent lubrication theory. Turbulent lubrication equations based on an eddy viscosity model have been used to develop the turbulent Reynolds equation. Convective fluid inertia effects have been incorporated using the perturbation approach in turbulent lubrication. To determine the dynamic characteristics i.e. stiffness, damping and whirl ratio, perturbation theory for small amplitude vibration of the journal center has been adopted. In general, it has been found that circumferential wave geometry improves the performance of the annular seal at higher speeds and increases in the L/D and taper ratios.Satyam Shivam GautamMihir Kumar GhoshJapanese Society of Tribologistsarticlewave sealturbulent lubricationleakage flowrotor dynamic behaviorwhirl ratioPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 5, Iss 1, Pp 7-18 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	wave seal turbulent lubrication leakage flow rotor dynamic behavior whirl ratio Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	wave seal turbulent lubrication leakage flow rotor dynamic behavior whirl ratio Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Satyam Shivam Gautam Mihir Kumar Ghosh Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
description	This paper presents results of a theoretical analysis to determine the leakage flow and dynamic characteristics of circumferential wave geometry annular seals using turbulent lubrication theory. Turbulent lubrication equations based on an eddy viscosity model have been used to develop the turbulent Reynolds equation. Convective fluid inertia effects have been incorporated using the perturbation approach in turbulent lubrication. To determine the dynamic characteristics i.e. stiffness, damping and whirl ratio, perturbation theory for small amplitude vibration of the journal center has been adopted. In general, it has been found that circumferential wave geometry improves the performance of the annular seal at higher speeds and increases in the L/D and taper ratios.
format	article
author	Satyam Shivam Gautam Mihir Kumar Ghosh
author_facet	Satyam Shivam Gautam Mihir Kumar Ghosh
author_sort	Satyam Shivam Gautam
title	Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
title_short	Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
title_full	Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
title_fullStr	Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
title_full_unstemmed	Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow
title_sort	dynamic and static characteristics of wavy annular seals in turbulent flow
publisher	Japanese Society of Tribologists
publishDate	2010
url	https://doaj.org/article/cf218fef78b642fb9d050bc6e5de53ff
work_keys_str_mv	AT satyamshivamgautam dynamicandstaticcharacteristicsofwavyannularsealsinturbulentflow AT mihirkumarghosh dynamicandstaticcharacteristicsofwavyannularsealsinturbulentflow
_version_	1718444377263570944

Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow

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