A Three-Dimensional Parametric Study and Numerical/Experimental Flow Visualization of a Six-Pocket Hydrostatic Journal Bearing
| Autor: | Ana M. Balasoiu, Minel J. Braun, Stefan I. Moldovan |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Tribology Transactions. 56:1-26 |
| ISSN: | 1547-397X 1040-2004 |
| DOI: | 10.1080/10402004.2011.649512 |
| Popis: | This article presents a numerical investigation and some experimental results supporting evidence on the flow structure and the pressure distribution in a hydrostatic journal bearing with six equidistant pockets. The parametric studies are of both operational and geometric nature. The operational ones include shaft's angular speed and inlet pressure. The geometric ones include pocket depth, eccentricity, clearance and restrictor diameter. The latter two are instrumental in changing the ratio of the restrictor to clearance hydraulic resistance (R). The flow regime in the bearing is kept in the laminar range (Rebrg < 60). It was found that for the deep pocket the pressure is uniformly distributed across its circumferential length, whereas for the shallow pocket it increases in a ramp fashion along the direction of rotation. The oil injected through the restrictor forms a penetrating jet that constitutes the driver of the upstream and downstream vortical cells that eventually interact with the Couette effect... |
| Databáze: | OpenAIRE |
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