Research on dynamic characteristics of gas film of spherical hybrid gas bearings based on computational fluid dynamics

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dc.contributor.authorJia, Chenhui
dc.contributor.authorCui, Zhiwu
dc.contributor.authorGuo, Shijun
dc.contributor.authorMa, Wensuo
dc.date.accessioned2020-09-15T15:53:51Z
dc.date.available2020-09-15T15:53:51Z
dc.date.issued2019-05-16
dc.description.abstractA realizable k–ε turbulence model for spherical spiral groove hybrid gas bearing films was established based on computational fluid dynamics (CFD). A six degrees of freedom passive grid was used to calculate the gas film pressure distribution, bearing capacity, and dynamic characteristic coefficients numerically. The gas flow field dynamic and static pressure coupling mechanism was studied. The effects of the rotation speed, gas film thickness eccentricity ratio, and gas supply pressure on the dynamic and static pressure bearing capacity, and dynamic characteristic coefficients during operation were analyzed as a method of research into the mechanical mechanisms of gas bearing stability. The CFD calculation analysis can simulate the complex gas flow in the transient flow field of the gas film and determine reasonable operation parameters to optimize the dynamic and static pressure coupling effects, which can improve the gas film bearing capacity, dynamic characteristics, and operational stability of gas bearings.en_UK
dc.identifier.citationJia C, Cui Z, Guo S, Ma W. (2019) Research on dynamic characteristics of gas film of spherical hybrid gas bearings based on computational fluid dynamics.Transactions of the Canadian Society for Mechanical Engineering, Volume 44, Issue 1, March 2020, pp. 23-37en_UK
dc.identifier.issn0315-8977
dc.identifier.urihttps://doi.org/10.1139/tcsme-2018-0134
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15801
dc.language.isoenen_UK
dc.publisherCanadian Society for Mechanical Engineeringen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectdynamic characteristic coefficientsen_UK
dc.subjectsteady bearing performanceen_UK
dc.subjectdynamic and static pressure coupling effectsen_UK
dc.subjectgas film pressure distributionen_UK
dc.subjectsix-degrees of freedom passive griden_UK
dc.subjectgas bearingen_UK
dc.titleResearch on dynamic characteristics of gas film of spherical hybrid gas bearings based on computational fluid dynamicsen_UK
dc.typeArticleen_UK

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