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在设计恒温出水混水阀阀体模型的基础上,采用kε双方程湍流模型,应用计算流体力学软件Fluent对恒温阀流场进行了数值模拟,得到默认边界条件下恒温阀压力、温度及速度场的分布情况,分析了冷热水入口压强、水力直径和温度对温水出口参数的影响,用恒温阀样机进行实验测试.结果显示,入口压强增加100倍,出口流量随之增加10倍;热水入口温度增加5℃,温水出口温度随之增加1.3℃.模拟与实验结果基本吻合,证明了理论研究的正确性,同时为改进对恒温阀的设计奠定了基础.
Based on the design of valve body model of thermostatic effluent water mixing valve, the kε two-equation turbulence model was used and the flow field of the thermostatic valve was numerically simulated by computational fluid dynamics software Fluent to get the pressure, temperature and velocity field of the thermostatic valve under the default boundary conditions The influence of hot and cold water inlet pressure, hydraulic diameter and temperature on warm water outlet parameters was analyzed, and the experiment was carried out by using thermostatic valve prototype.The results showed that the inlet pressure increased 100 times and the outlet flow increased 10 times. Hot water The inlet temperature increased by 5 ℃, and the outlet temperature of warm water increased by 1.3 ℃. The simulation and experimental results are basically consistent, which proves the correctness of theoretical research and lays the foundation for improving the design of thermostatic valve.