Effect of blade tip leakage flow on erosion of a radial inflow turbine for compressed air energy storage system
Effect of blade tip leakage flow on erosion of a radial inflow turbine for compressed air energy storage system
复制标题
叶尖泄漏流对压缩空气储能系统径流式涡轮机腐蚀的影响
DOI：
10.1016/j.energy.2019.04.139
复制
发表时间：
2019-07
期刊：
影响因子：
9
通讯作者：
Chen Haisheng
中科院分区：
文献类型：
--
作者：
Wang Xing;Zhang Xuehui;Zhu Yangli;Zhang Xinjing;Li Wen;Chen Haisheng
在沙漠地区运行的压缩空气蓄能系统中，沙粒对径流式涡轮机的磨损严重影响其安全运行。本文研究了在不同叶顶间隙和总压比下，泄漏流对CAES向心涡轮机冲蚀的影响。耦合Tabakoff和Grant侵蚀模型的CFD模型用于分析。结果表明，静叶尾缘、动叶前缘、动叶进口附近的围带和轮毂表面对叶尖各间隙处的冲蚀都比较严重。因此，应采用耐磨涂层。转子叶尖处也有严重的冲蚀磨损。但随着叶顶间隙的增大，这种现象逐渐被抑制。随着总压比的增大，转子围带上冲蚀率较高的区域逐渐向下游延伸。但动叶前缘的冲蚀率明显降低。结果表明，当叶顶间隙为2%，总压比大于1.84时，可以显著地减轻冲蚀效应，而等熵效率基本不变。
The erosion caused by sand particles significantly influences the safety of radial inflow turbine in Compressed Air Energy Storage (CAES) system which operated in desert area. In present study, effects of tip leakage flow on erosion of a CAES radial inflow turbine are investigated at different tip clearances and total pressure ratios. A CFD model coupling Tabakoff and Grant erosion model is utilized for the analysis. Results illustrate that the trailing edge of stator, the leading edge of rotor blades, the shroud and hub surfaces near inlet of rotor cause more severe erosion at each tip clearance. Therefore, wear-resistant coating should be adopted. The severe erosion can also be found at blade tip of rotor. However, it is gradually suppressed with the increase of tip clearance. With the increase of total pressure ratio, the region with higher erosion rate on the shroud of rotor gradually extends to downstream. However, the erosion rate at leading edge of rotor blades is decreased obviously. In conclusion, the erosion effect can be alleviated remarkably when the tip clearance size is of 2% and total pressure ratio is more than 1.84, while the isentropic efficiency is almost kept the same.
登录
查看更多内容
DOI：
10.2514/6.1990-2414
发表时间：
1990-07
期刊：
--
影响因子：
--
作者：
C. Rodgers
通讯作者：
C. Rodgers
DOI：
10.1016/j.egypro.2017.08.221
发表时间：
2017-09
期刊：
Energy Procedia
影响因子：
--
作者：
Angelo Leto-;A. Bonfiglioli
通讯作者：
Angelo Leto-;A. Bonfiglioli
DOI：
10.1115/97-gt-090
发表时间：
1997-06
期刊：
--
影响因子：
--
作者：
V. Amedick;H. Simon
通讯作者：
V. Amedick;H. Simon
影响因子：
8.7
作者：
Do-Yeop Kim;You-Taek Kim
通讯作者：
Do-Yeop Kim;You-Taek Kim
影响因子：
9
作者：
Lei Fu;Z. Feng;Guojun Li
通讯作者：
Lei Fu;Z. Feng;Guojun Li