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http://dx.doi.org/10.9725/kstle.2003.19.3.139

A Study on Performance Analysis of Cryogenic Hydrostatic Journal Bearings : the Effects of Turbulent Flow, Pressure Drop and Variable Liquid Properties  

김성기 (한국과학기술원 기계공학과)
강지훈 (한국과학기술원 기계공학과)
김경웅 (한국과학기술원 기계공학과)
Publication Information
Tribology and Lubricants / v.19, no.3, 2003 , pp. 139-145 More about this Journal
Abstract
In this paper, static characteristics of a cryogenic hydrostatic journal bearing which has 2-rows staggered recesses are numerically analyzed. The regime of operation of this bearing is fully turbulent with large fluid inertia effects. The turbulent lubrication equation is solved under the assumption that turbulence parameters are decided by the Reynolds numbers. Pressure drop caused by inertia effect at the recess edge is considered in this analysis. Also density and viscosity of working fluid are considered as function of only pressure. Numerical results for a cryogenic Hydrostatic journal bearing show pressure distribution, load capacity, flow rate, and recess pressure. The effects of turbulent flow, pressure drop and variable liquid properties are discussed.
Keywords
cryogenic; 2 row hydrostatic Journal bearing; turbulent lubrication; inertia effect;
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[ 東野··ほか(3名 ) ] / 第 34回 字宙科學技術連合講演會