| 徐宇,吴玉林,刘文俊,陈乃祥.用两相流模型模拟混流式水轮机内空化流动[J].水利学报,2002,33(8):0057-0063 |
| 用两相流模型模拟混流式水轮机内空化流动 |
| Simulation of cavitation flow in a Francis turbine runner |
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| DOI： |
| 中文关键词: 两相流 空化 湍流模型 |
| 英文关键词: two-phase flow cavitation turbulent flow model |
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| 中文摘要: |
| 本文采用两相流中两流体模型模拟混流式水轮机转轮内三维湍流空化流场, 基于两相流中两流体模型的理论和方程, 推导了水轮机转轮中空化两相流的两流体基本方程, 并利用k-ε-kp两相湍流模型计算水轮机转轮中三维空化两相湍流. 计算结果包括了液相和空泡相的主要流动特征, 模拟结果可初步预测流体机械空化性能, 缩短模型试验周期. |
| 英文摘要: |
| The cavitatin flow in a Francis turbine runner is simulated by a two-phase turbulent flow mode, namely k-ε-kp model. According to the theory of two-phase flow, the governing equations of the cavity-liquid turbulent flow are deduced. The cavitation flow in a Venturi tube is calculated as an example to verify the validity of the model. On this basis, the simulation of the flow in a Francis turbine runner is carried out. The calculated results including the flow characteristics both for liquid phase and cavity are presented. |
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