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采用PHOENICS程序来模拟通过航天飞机主发动机高压氧化剂涡轮泵4号滚珠轴承组件的液氧流量。PHOENICS的机体配合坐标系能被用来建立几何图形的精确模型。用此模型说明的效应有计算转数、液氧的粘滞加热以及液氧沸腾引起的两相流效应等。采用一种单独程序来说明滚珠轴承内的热传导现象。此单独程序与PHOENICS流量和传热分析相配合。求解了液氧冷却剂的速度场和温度场以及滚珠温度。预计的滚珠温度表明,冷却剂在邻近滚珠表面的区域内发生沸腾现象。
The PHOENICS program was used to simulate liquid oxygen flow through the Space Shuttle Main Engine HP Turbo Pump No.4 Ball Bearing Assembly. PHOENICS ’body coordinates can be used to create accurate models of geometry. The effect of this model is illustrated by the calculated number of revolutions, the viscous heating of liquid oxygen, and the two-phase flow effect caused by the boiling of liquid oxygen. A separate procedure is used to illustrate the heat conduction inside the ball bearing. This separate program is compatible with PHOENICS flow and heat transfer analysis. The velocity field and temperature field of the liquid oxygen coolant and the temperature of the ball were solved. The predicted ball temperature indicates that the coolant is boiling in the area adjacent to the ball’s surface.