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The effect of T-tube bending curvature on two-phase flow distribution characteristics

WANG Dan-hua  HAN Yuan-yuan  XU Meng-na  LENG Xue-li  ZHANG Guan-min  TIAN Mao-cheng  
【摘要】:The flow of the league in the plate-fin heat exchanger can be seen as parallel scientific problems in the pipeline.Since the multiphase flow mechanism is complex,and two-phase fluid uneven distribution has been an issue in the applications of plate-fin heat exchanger,it is helpful to solve the heat exchanger running deviation and uneven heating phenomenon when ensuring the uniform distribution in each phase composition of the heat exchanger.T-tube is a key link in the flow distribution of the flow in the header.The MIXTURE model in Fluent is applicable for studying two phase separation of spray flow in T-tube.Using numerical calculation method to simulate the gas and liquid two phase flow of T-tube studied the influence of using bend the structure at branch pipe junction on two-phase flow distribution characteristics,concluded that the bent pipe inside diameter being about 2.5 times of the tube diameter is the most beneficial to uniform fluid in the branch of T-tube.

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