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对垂直同心环形管内上升气液环状流的截面含气率及压降预测进行了研究 .根据Kelessidis有关团状流向环状流转换的思路以及Wallis有关圆管内环状流积分分析的方法 ,考虑环形管的结构特征及环状流的流型特征 ,通过两相动力学理论建立了新的预测截面含气率及总压降的模型 .将新模型及现有模型与实验数据的分析比较表明新模型对于总压降的预测效果较好
In this paper, the prediction of gas-bearing ratio and pressure drop of ascending gas-liquid annular flow in a vertically concentric annular pipe is studied.According to the idea of Kelessidis on the idea of changing the flow of a ring-shaped flow into a ring-shaped flow and Wallis’s method of integrating annular flow in a pipe, The structural characteristics of the annular pipe and the flow characteristics of the annular flow, a new model of predicting the gas content and the total pressure drop of the cross section has been established by the two-phase dynamic theory.The comparison between the new model, the existing model and the experimental data The new model predicts the total pressure drop better