关键词: 双向旋转轴阀⁺;热应力分析;流固耦合;流量调节

Abstract: Based on ANSYS software, the time-averaged N-S equations, RNG k-ε turbulence modeling, the Fourier heat conduction modeling, the 3-D face symmetry gas phase flow modeling and solid heat conduction modeling were founded. The fluid-structure interaction face was set for thermal coupling surface, using fluid-solid coupling method. The flow field characteristic of nozzle and the distribution of temperature and stress in solid region of nozzle body and regulation valves were analyzed. The results indicated that the temperature of nozzle throat cylindrical section is among the highest. At the equivalent throat section and equivalent expansion section of valves, the stress concentration phenomenon was emerged. Both of them increase with the rotation angle of regulation valves and working time.

Key words: Two-way rotation axis valves⁺； Stress analysis； Fluid-structure interaction； Flow regulation