極低温ハイドロスタティックジャーナル軸受の静特性解析

概要

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Steady characteristics of a hydrostatic cryogenic journal bearing used for the liquid hydrogen turbopump of rocket engines are numerically analyzed. The bearing has many recesses arranged in two rows in a staggered manner. The turbulent lubrication equation is solved under the assumption that the temperature change in the bearing is negligible in accordance with the experimental results. Effects of the rotational speed, the shaft eccentricity and the pressure drop at the recess edge are considered in the analysis. Their effects on the film pressure distribution, the recess pressures, the total lubricant flow rate and the load carrying capacity are clarified. Moreover, effects of the distance between two recess rows, the orifice parameter, number of recesses and the radial clearance on these characteristics are investigated.
社団法人日本機械学会の論文
1995-08-25