槽缝射流对高负荷涡轮非轴对称端壁冷却性能的影响研究

Translated title of the contribution: Effects of Slot Jet Flow on Non-Axisymmetric Endwall Cooling Performance in a High-Load Turbine

Kun Du, Yi Hao Jia, Zun Sheng Zhao, Chun Zhou, Hui Song, Cun Liang Liu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Based on endwall static pressure distribution contouring method,the difference of cooling performance about global and local non-axisymmetric endwall contouring was studied in this research for a high load turbine with purge flow. The effects of incidence angles and slot structures on endwall cooling characteristics of non-axisymmetric contouring were also revealed. The results show that the non-axisymmetric endwall contouring can alter the aerodynamic and cooling performance simultaneously. By inhibiting the secondary flow,the non-axisymmetric endwall contouring can reduce the total cascade pressure loss coefficient 0.364%. The effective area covered by the coolant can increase by 13.57% compared to a flat endwall,but the laterally averaged film effectiveness is decreased. The non-axisymmetric endwall contouring could improve the protection effect of large angle purge flow. Under the work of tangent circle slot structure,coolant coverage area increases by 11.51% compared with flat endwall.

Translated title of the contributionEffects of Slot Jet Flow on Non-Axisymmetric Endwall Cooling Performance in a High-Load Turbine
Original languageChinese (Traditional)
Article number2207080
JournalTuijin Jishu/Journal of Propulsion Technology
Volume44
Issue number7
DOIs
StatePublished - Jul 2023

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