某氦气压气机三维优化设计

The Three-dimensional Optimized Design of a Helium Compressor

对某氦气压气机设计方案三维数值模拟计算结果特点进行分析,指出了三维优化改型设计方向和指导原则,通过调整叶片厚度分布、叶片尾缘型线曲率和采用端弯技术等方法,对原型氦气压气机气动设计方案进行了全三维优化设计,对比分析三维优化设计前后数值模拟计算结果,三维优化设计后压气机效率提高2个百分点,有效控制了二次流动进一步发展。

By analyzing the features of the three-dimensional numerical simulation results for the design scheme of a helium compressor,given were the design direction and guiding principle for its three-dimensional optimized modification design.By employing such methods as adjusting the distribution of blade thickness and the curvature of blade trailing edge profile as well as terminal-bend technology etc.,a full three-dimensional optimization design was performed of the aerodynamic design version of the prototype helium compressor.A contrast analysis was conducted of the numerical simulation results before and after the three-dimensional optimized design.The efficiency of the compressor after the three-dimensional optimized design has been increased by 2 percent,effectively limiting the further development of secondary flows.