论文部分内容阅读
基于Fluent软件,采用标准k-ε湍流模型和VOF多相流模型对环冷机液密封内气液两相流动过程进行了数值模拟研究。运用该模型研究了进口风速、出口压力、水槽液位、初始状态等因素对密封液面的影响,再通过正交实验对4个因素的影响力大小进行了综合分析。研究结果表明,初始状态影响最大,进口风速次之,水槽液位及出口压力影响最小,并得到以减小液密封液面波动为目标的最优运行参数组合:进口风速15m/s,出口压力3300Pa,水槽液位0.5m,初始波高0.02m。模型计算结果与现场测试相比,误差在5%以内,验证模型的正确性,研究结果可用于液密封设计。
Based on the Fluent software, the standard k-ε turbulence model and the VOF multi-phase flow model were used to simulate the gas-liquid two-phase flow in the liquid-sealed cryogenic liquid cooler. The model was used to study the influence of inlet velocity, outlet pressure, tank liquid level and initial state on the sealing liquid surface. The influence of four factors on the sealing liquid surface was analyzed by orthogonal experiment. The results show that the initial state has the most influence, the second is the inlet wind velocity, the second one has the least influence on the liquid level and the outlet pressure of the liquid tank. The optimum operating parameters are obtained with the aim of reducing the liquid seal level fluctuation: inlet wind speed 15m / s, outlet pressure 3300Pa, the tank level 0.5m, the initial wave height 0.02m. Compared with the field test, the error of the model calculation is less than 5%, and the correctness of the model is verified. The research results can be used in the design of liquid seal.