Effect of chamber roughness and local smoothing on performance of a CAES axial turbine
Effect of chamber roughness and local smoothing on performance of a CAES axial turbine
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室粗糙度和局部平滑对 CAES 轴流式涡轮机性能的影响
DOI：
10.1016/j.renene.2021.01.133
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发表时间：
2021-02
期刊：
影响因子：
8.7
通讯作者：
Yulong Ding
中科院分区：
文献类型：
--
作者：
Xing Wang;Xuehui Zhang;Zhitao Zuo;Yangli Zhu;Wen Li;Haisheng Chen;Yulong Ding
轴向水轮机是影响压缩空气储能系统输出功率和效率的关键装置。本文通过数值研究腔室粗糙度对CAES系统中轴向涡轮效率和流动损失特性的影响，为提高轴向涡轮性能和降低制造成本寻找途径。结果表明，效率随腔室粗糙度的增加呈非线性降低。当设计点的腔室粗糙度小于10 μm时，效率降低0.45%。当膨胀比小于1.9时，当腔室粗糙度为50 μm时，效率降低1.9%。内部流动分析表明，随着腔室粗糙度的增加，定子环左侧上端壁面附近的通道涡增强。在11.26%的壁面面积上，壁面粗糙度为1.6 μm的“局部平滑壁”的效率回收率为0.61%。总压比为1.4时，等熵效率也比全光滑壁面提高了0.6%以上。
Axial turbine is a key device which influences the power output and efficiency of the Compressed Air Energy Storage (CAES) system notably. In present study, the effect of chamber roughness on the efficiency and flow loss characteristics of an axial turbine in the CAES system is investigated numerically to find a way to improve the performance and reduce the manufacturing cost. The results illustrate that the efficiency is reduced nonlinearly with the increase of chamber roughness. An efficiency reduction of 0.45% is obtained when chamber roughness is less than 10 μm at design point. However, the efficiency reduction of 1.9% is obtained by the chamber roughness of 50 μm when the expansion ratio is less than 1.9. Internal flow analysis reveals that the passage vortex near upper end wall in the left-part of stator ring is strengthen with the increase of chamber roughness. An efficiency recovery of 0.61% is achieved by “Local smoothing wall” which has wall roughness of 1.6 μm at only 11.26% of the wall area. The isentropic efficiency is also increased more than 0.6% compared to the full smooth wall wall when total pressure ratio is 1.4.
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影响因子：
5.2
作者：
Weiwei Xu;Konghao Zhu;Jianjun Wang;Lin Yajun;L. Qiang
通讯作者：
Weiwei Xu;Konghao Zhu;Jianjun Wang;Lin Yajun;L. Qiang
DOI：
10.1115/1.4028205
发表时间：
2014-06
影响因子：
1.5
作者：
J. Bellucci;F. Rubechini;M. Marconcini;A. Arnone;Lorenzo Arcangeli;N. Maceli;V. Dossena
通讯作者：
J. Bellucci;F. Rubechini;M. Marconcini;A. Arnone;Lorenzo Arcangeli;N. Maceli;V. Dossena
影响因子：
4.6
作者：
E. Saputro;M. Farid
通讯作者：
E. Saputro;M. Farid
影响因子：
1.4
作者：
F. R. Marzabadi;M. Soltani
通讯作者：
F. R. Marzabadi;M. Soltani
DOI：
10.1007/978-3-642-58277-6_12
发表时间：
2019-12
期刊：
Fluid Mechanics
影响因子：
--
作者：
J. Spurk
通讯作者：
J. Spurk