Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids

In this paper, a theoretical study of the combined effects of viscosity variation and surface roughness on the squeeze film performance of journal bearings lubricated with micropolar fluid is made. The modified averaged Reynolds equation for micropolar fluids accounting for the randomized surface ro...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Neminath Bhujappa Naduvinamani, Siddangouda Apparao, Archana Kamalakar Kadadi, Shivaraj Nagshetty Biradar
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2014
Materias:	journal bearing surface roughness squeeze film micropolar fluid viscosity variation 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/2bb27120af8d40698400baca0c613984
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2bb27120af8d40698400baca0c613984
record_format	dspace
spelling	oai:doaj.org-article:2bb27120af8d40698400baca0c6139842021-11-05T09:23:18ZCombined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids1881-219810.2474/trol.9.175https://doaj.org/article/2bb27120af8d40698400baca0c6139842014-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/9/4/9_175/_pdf/-char/enhttps://doaj.org/toc/1881-2198In this paper, a theoretical study of the combined effects of viscosity variation and surface roughness on the squeeze film performance of journal bearings lubricated with micropolar fluid is made. The modified averaged Reynolds equation for micropolar fluids accounting for the randomized surface roughness structure and variation of viscosity is mathematically derived. The Christensen’s stochastic theory for hydrodynamic lubrication of rough surfaces is used to study the effect of two types of one dimensional surface roughness patterns on the squeeze film characteristics of a journal bearing with micropolar fluid. Closed form expressions for the mean pressure load carrying capacity are obtained for the infinitely short journal bearing. It is observed that, the transverse surface roughness pattern improves the squeeze film characteristics where as the adverse effects are observed for the one-dimensional longitudinal surface roughness pattern. The effect of variation of viscosity in micropolar fluid on the squeeze film characteristic of rough short journal bearings is analyzed.Neminath Bhujappa NaduvinamaniSiddangouda ApparaoArchana Kamalakar KadadiShivaraj Nagshetty BiradarJapanese Society of Tribologistsarticlejournal bearingsurface roughnesssqueeze filmmicropolar fluidviscosity variationPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 9, Iss 4, Pp 175-183 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	journal bearing surface roughness squeeze film micropolar fluid viscosity variation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	journal bearing surface roughness squeeze film micropolar fluid viscosity variation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Neminath Bhujappa Naduvinamani Siddangouda Apparao Archana Kamalakar Kadadi Shivaraj Nagshetty Biradar Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
description	In this paper, a theoretical study of the combined effects of viscosity variation and surface roughness on the squeeze film performance of journal bearings lubricated with micropolar fluid is made. The modified averaged Reynolds equation for micropolar fluids accounting for the randomized surface roughness structure and variation of viscosity is mathematically derived. The Christensen’s stochastic theory for hydrodynamic lubrication of rough surfaces is used to study the effect of two types of one dimensional surface roughness patterns on the squeeze film characteristics of a journal bearing with micropolar fluid. Closed form expressions for the mean pressure load carrying capacity are obtained for the infinitely short journal bearing. It is observed that, the transverse surface roughness pattern improves the squeeze film characteristics where as the adverse effects are observed for the one-dimensional longitudinal surface roughness pattern. The effect of variation of viscosity in micropolar fluid on the squeeze film characteristic of rough short journal bearings is analyzed.
format	article
author	Neminath Bhujappa Naduvinamani Siddangouda Apparao Archana Kamalakar Kadadi Shivaraj Nagshetty Biradar
author_facet	Neminath Bhujappa Naduvinamani Siddangouda Apparao Archana Kamalakar Kadadi Shivaraj Nagshetty Biradar
author_sort	Neminath Bhujappa Naduvinamani
title	Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
title_short	Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
title_full	Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
title_fullStr	Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
title_full_unstemmed	Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids
title_sort	combined effects of viscosity variation and surface roughness on the squeeze film lubrication of journal bearings with micropolar fluids
publisher	Japanese Society of Tribologists
publishDate	2014
url	https://doaj.org/article/2bb27120af8d40698400baca0c613984
work_keys_str_mv	AT neminathbhujappanaduvinamani combinedeffectsofviscosityvariationandsurfaceroughnessonthesqueezefilmlubricationofjournalbearingswithmicropolarfluids AT siddangoudaapparao combinedeffectsofviscosityvariationandsurfaceroughnessonthesqueezefilmlubricationofjournalbearingswithmicropolarfluids AT archanakamalakarkadadi combinedeffectsofviscosityvariationandsurfaceroughnessonthesqueezefilmlubricationofjournalbearingswithmicropolarfluids AT shivarajnagshettybiradar combinedeffectsofviscosityvariationandsurfaceroughnessonthesqueezefilmlubricationofjournalbearingswithmicropolarfluids
_version_	1718444399429419008

Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids

Ejemplares similares