油气润滑系统中弯管内油气两相流数值仿真

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Oil-air two-phase flow in elbow of the oil-air lubrication system is simulated based on FLUENT. The elbow re- flects on oil-air two-phase flow is researched through studying the flow field characteristic. The results show that oil-air annu- lar flow will not be disrupted by elbow until oil-air flow reach to a certain length of straight pipe.基于FLUENT对油气润滑系统中常见的竖直向下弯管的油气两相流场进行了仿真。通过分析弯管处流场的特性,研究了弯管对油气两相流的影响。结果表明：弯管对油气两相环状流有破坏作用,且这种影响会需要到达直管一定距离后才会消失。