1743 輸送係数の温度依存性によるジャーナル・ベアリングの安定効果の数値シミュレーション(S33-4 タービン・その他,S33 流体機械の諸問題)

概要

論文の詳細を見る
The flow in journal bearing in which the viscosity depends on the temperature distribution is simulated by the vorticity-stream function and vorticity-vector potential method which are easy to apply to complicated shapes and satisfies continuity equation of incompressible fluid flow automatically. In addition, stream function and vector potential on the physical boundary are decided by separated flow fields and the pressure-single valued conditon. At first in two-dimensional analysis, it becomes clear that the movement of journal bearing on eccentricity was definitely different whether the temperature distribution is considered or not. However it was also found that the journal does not become stable ultimately even though the temperature distribution is considerd. Secondly in three-dimensional analysis, the state of journal bearing in the case that the temperature is constant is compared with the result of two-dimensional analysis.
2007-09-07