基于Fluent软件的恒温出水混水阀模拟

在设计恒温出水混水阀阀体模型的基础上，采用k-e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.

Simulation of Thermostatic Water Mixing Valve Based on Fluent

On the basis of design of thermostatic water mixing valve body model, using k-e two-equation turbulence model and CFD software Fluent the flow field of thermostatic valve was numerically simulated to obtain its distribution fields of pressure, temperature and velocity under the default of boundary conditions. The effects of hot and cold water inlet pressure, hydraulic diameter and temperature on the parameters of hot water outlet were analyzed. Finally, some experiments were carried out with the thermostatic valve prototype. The results show that the outlet flow rate will increase 10 times if the inlet pressure increases 100 times, and warm water outlet temperature will increase 1.3℃ if hot water inlet temperature increses 5℃. By comparing the results of simulation and experiment, both are basically consistent, which proves the correctness of the theoretical research, and lays the foundation for improving the design of thermostatic valves.