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

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dc.contributor.author Jia, Chenhui
dc.contributor.author Cui, Zhiwu
dc.contributor.author Guo, Shijun
dc.contributor.author Ma, Wensuo
dc.date.accessioned 2020-09-15T15:53:51Z
dc.date.available 2020-09-15T15:53:51Z
dc.date.issued 2019-05-16
dc.identifier.citation Jia 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, 2020, pp. 23-37 en_UK
dc.identifier.issn 0315-8977
dc.identifier.uri https://doi.org/10.1139/tcsme-2018-0134
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/15801
dc.description.abstract A 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.language.iso en en_UK
dc.publisher Canadian Society for Mechanical Engineering en_UK
dc.rights Attribution-NonCommercial 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc/4.0/ *
dc.subject dynamic characteristic coefficients en_UK
dc.subject steady bearing performance en_UK
dc.subject dynamic and static pressure coupling effects en_UK
dc.subject gas film pressure distribution en_UK
dc.subject six-degrees of freedom passive grid en_UK
dc.subject gas bearing en_UK
dc.title Research on dynamic characteristics of gas film of spherical hybrid gas bearings based on computational fluid dynamics en_UK
dc.type Article en_UK


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