摘要
采用非可展直纹抛物面法设计出适用于有机朗肯低温余热发电系统的小型向心透平叶轮。对初步设计的叶轮叶片进行数值模拟分析,以验证模拟方法的正确性,并从叶轮5%、50%和95%叶高截面处分别对叶轮内部的静压、总压、温度和速度分布进行流场分析,发现初步设计叶轮结构存在优化空间。对叶轮进行结构优化和数值分析,结果表明,优化后的叶轮性能明显优于原设计,透平等熵效率提高了1%。
By using non-developable straight grain parabolic method ,the impeller of a small radial turbine was designed for organic Rankine cycle waste heat power generation system at low temperature .Preliminary design of the impeller blades was analyzed by numerical simulation to verify the correctness of the method .The flow field of static pressure,total pressure, temperature and velocity distribution was analyzed in the impeller ,respectively on 5%,50%and 95%high-sectional of the leaves.The structure of preliminary design could be improved and numerical analysis was made on the optimized impeller . Significantly ,it has been showed that the performance of the optimized impeller is better than the original design , the isentropic efficiency is improved by 1%.
出处
《汽轮机技术》
北大核心
2015年第1期9-12,16,共5页
Turbine Technology
基金
煤燃烧国家重点实验室开放基金资助项目(FSKLCC1410)
河南省重点科技攻关计划项目(142102210072)
关键词
向心透平
叶片造型
等熵效率
数值模拟
radial inflow turbine
blade modeling
isentropic efficiency
numerical simulation
