弧形端壁造型对不带冠涡轮气动性能的影响

推进技术 ›› 2014, Vol. 35 ›› Issue (6): 779-787.

弧形端壁造型对不带冠涡轮气动性能的影响

查小晖,郑群,高杰,王威,于雷,刘鹏

哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001;哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001;哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001;哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001;哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001;哈尔滨工程大学动力与能源工程学院，黑龙江哈尔滨150001

发布日期:2021-08-15
作者简介:查小晖(1990—)，男，硕士生，研究领域为叶轮机械气动热力学。E-mail:734896517@qq.com
基金资助:
中央高校基本科研业务费专项资金资助项目(HEUCF130310)。

Effects of Arcing Endwall Contouring on Aerodynamic Performances of an Unshrouded Axial Turbine

College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China;College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China;College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China;College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China;College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China;College of Power and Energy Engineering，Harbin Engineering University，Harbin 150001，China

Published:2021-08-15

摘要/Abstract

摘要： 采用商用计算流体力学软件CFX，湍流模型采用标准 k - w 两方程湍流模型，叶型为单涡轮动叶叶片，应用数值模拟方法研究了弧形端壁造型对动叶泄漏流动及涡轮气动性能的影响。数值研究结果表明:适当优化的弧形端壁造型可以改善泄漏涡和通道涡作用状况、提高出口总压和改善气流角分布、降低叶顶间隙泄漏和提高效率。最优端壁造型可以减少间隙泄漏0.27%，提高效率0.77%。在变攻角下，最优端壁造型效率最高点出现在设计攻角下，但攻角变化越大，间隙泄漏流动越少。

关键词: 涡轮；间隙泄漏；端壁造型；弧形

Abstract: CFX simulations were performed by solving steady compressible Reynolds-averaged N-S equations in conjunction with the standard k - w two-equation turbulence model adopted in this study. The blade calculated was a rotor blade in a gas turbine. The numerical simulation was performed to investigate the effects of arcing endwall contouring on blade aerodynamic performances and tip leakage flow. The results show that the arcing endwall contouring can weaken passage vortex and tip leakage vortex，improve the flow angle condition，reduce the mass flow of tip leakage flow，raise outlet total pressure and the efficiency of the turbine．The optimized arcing endwall contouring reduces the blade tip leakage flow by 0.27% and increases the turbine efficiency by 0.77% compared with original turbine. The optimized arcing endwall contouring provides the largest efficiency increase when the inlet flow direction incidence is at the design incidence. When incidence change becomes larger，the blade tip leakage flow becomes smaller.

Key words: Turbine；Tip leakage； Endwall contouring；Arc

查小晖,郑群,高杰,王威,于雷,刘鹏. 弧形端壁造型对不带冠涡轮气动性能的影响[J]. 推进技术, 2014, 35(6): 779-787.

ZHA Xiao-hui,ZHENG Qun,GAO Jie,WANG Wei,YU Lei,LIU Peng. Effects of Arcing Endwall Contouring on Aerodynamic Performances of an Unshrouded Axial Turbine[J]. Journal of Propulsion Technology, 2014, 35(6): 779-787.

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