The Combined Influences of Film Cooling and Thermal Barrier Coatings on the Cooling Performances of a Film and Internal Cooled Vane
The Combined Influences of Film Cooling and Thermal Barrier Coatings on the Cooling Performances of a Film and Internal Cooled Vane
复制标题
薄膜冷却和热障涂层对薄膜和内冷叶片冷却性能的综合影响
DOI：
10.3390/coatings10090861
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发表时间：
2020-09
期刊：
影响因子：
3.4
通讯作者：
Yuanfeng Lu
中科院分区：
文献类型：
--
作者：
Li Shi;Zhiying Sun;Yuanfeng Lu
本文对气膜冷却和热障涂层对NASA C3X导叶冷却性能的综合影响进行了数值研究。结果表明：(1)压力侧的气膜冷却效果优于吸力侧的气膜冷却效果，特别是尾缘的气膜冷却效果较好，需要采用内冷却和ttc等多种冷却和热保护技术。(2)对于有膜冷却或无膜冷却的涂层叶片，tbc对其冷却性能的改善同时表现出积极和消极的作用。在无气膜冷却的情况下，由于吸力侧滞止线的流动加速，热导膜对温度较低的外热气体区域起负作用。(3)冷却剂引入后的内部冷却改善，由于在冷却剂整体和膜状冷却孔附近存在tbc，导致冷却效率系数较大。然而，在远离冷却剂整体和膜冷却有效覆盖的区域，tbc对冷却效率增量的影响减小，甚至呈负作用。(4)改善冷却液与冷却液腔壁和膜状冷却孔的对流换热是提高涂层叶片冷却性能的保证。
This paper presents a numerical investigation on the combined influences of film cooling and thermal barrier coatings (TBCs) on the cooling performances of a NASA C3X guide vane. The results show that: (1) film cooling on the pressure side is more effective than suction side, especially on the trailing edge where multiple cooling and thermal protection techniques include internal cooling and TBCs are necessary. (2) TBCs show positive and negative roles in improving cooling performance at the same time for the coated vane with or without film cooling. Without film cooling, TBCs show negative roles on the regions with lower temperature external hot gas, which is caused by flow acceleration from the stagnation line of the suction side. (3) Internal cooling improvement caused by coolant introduction leads to a larger cooling effectiveness inclement due to TBCs near coolant plenums and film cooling holes. However, the influence of TBCs on cooling effectiveness increment goes down and even shows negative roles on the regions away from coolant plenums and under the effective coverage of the film cooling. (4) Improving the convective heat transfer of coolant with the wall of coolant plenums and film cooling holes is the guarantee of improving the cooling performance of a coated vane.
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DOI：
--
发表时间：
1988-11
期刊：
--
影响因子：
--
作者：
L. D. Hylton;V. Nirmalan;B. Sultanian;R. Kaufman
通讯作者：
L. D. Hylton;V. Nirmalan;B. Sultanian;R. Kaufman
影响因子：
4.5
作者：
Jing-zhou Zhang;Xing-dan Zhu;Ying Huang;Chunhua Wang
通讯作者：
Jing-zhou Zhang;Xing-dan Zhu;Ying Huang;Chunhua Wang
DOI：
--
发表时间：
1983-05
期刊：
--
影响因子：
--
作者：
L. D. Hylton;M. S. Mihelc;E. Turner;D. Nealy;R. York
通讯作者：
L. D. Hylton;M. S. Mihelc;E. Turner;D. Nealy;R. York
影响因子：
5.7
作者：
Ping Dong;Qiang Wang;Zhaoyuan Guo;Hongyan Huang;Guotai Feng
通讯作者：
Ping Dong;Qiang Wang;Zhaoyuan Guo;Hongyan Huang;Guotai Feng
DOI：
10.1016/j.ijheatmasstransfer.2018.01.004
发表时间：
2018-06
影响因子：
5.2
作者：
Longfei Wang;S. Wang;Fengbo Wen;Xun Zhou;Zhongqi Wang
通讯作者：
Longfei Wang;S. Wang;Fengbo Wen;Xun Zhou;Zhongqi Wang