采用新型非轴对称端壁优化设计方法 提高涡轮性能的数值研究

推进技术 ›› 2014, Vol. 35 ›› Issue (5): 597-602.

采用新型非轴对称端壁优化设计方法提高涡轮性能的数值研究

赵刚剑,刘波,那振喆,曹志远

西北工业大学动力与能源学院，陕西西安 710072;西北工业大学动力与能源学院，陕西西安 710072;西北工业大学动力与能源学院，陕西西安 710072;西北工业大学动力与能源学院，陕西西安 710072

发布日期:2021-08-15
作者简介:赵刚剑(1987—)，男，硕士生，研究领域为叶轮机械。E-mail :jiannol@163.com
基金资助:
国家自然科学基金委创新研究群体(51121004)。

Improving the Performance of Turbine Based on a New Optimization Design Method

School of Power and Energy，Northwestern Polytechnical University，Xi ’ an 710072，China;School of Power and Energy，Northwestern Polytechnical University，Xi ’ an 710072，China;School of Power and Energy，Northwestern Polytechnical University，Xi ’ an 710072，China;School of Power and Energy，Northwestern Polytechnical University，Xi ’ an 710072，China

Published:2021-08-15

摘要/Abstract

摘要： 为提高非轴对称端壁控制端壁处二次流的潜能，进一步提高涡轮性能，发展了一种新型的非轴对称端壁优化设计方法，并以高压涡轮导叶为研究对象，采用端壁参数化、三维N-S方程流场求解与基于人工神经网络的遗传算法相结合的方法进行非轴对称端壁优化，分析了优化后的非轴对称端壁造型对涡轮导叶流场的影响。结果表明:优化后的非轴对称端壁改善了涡轮导叶的流场，延迟了通道涡的生成和发展，削弱了角涡的强度，降低了导叶通道内的流动损失，涡轮导叶出口处的总压损失系数降低了3.724%。此外，非轴对称下端壁造型对高压涡轮导叶上半叶高流场的影响不大。

关键词: 高压涡轮；非轴对称端壁；优化设计；总压损失系数

Abstract: In order to improve the ability of non-axisymmetric end wall reducing the second flow，and further improve the performance of turbines，a novel optimization design method of non-axisymmetric end wall contouring was developed，which was also adopted for a high pressure(HP)turbine stator row. End wall parametrization and 3D Navier-Stokes(N-S)flow solver and genetic algorithms(GA)based on artificial neural network(ANN)were carried out to the non-axisymmetric end wall optimization. The effects of optimized non-axisymmetric end wall on the flow field of the HP turbine stator were analyzed. The results indicate that the optimized non-axisymmetric end wall can effectively improve the flow structures in the HP turbine stator，hence the formation of the passage vortex is delayed and the intensity of the corner vortex is decreased. Furthermore，the flow loss is reduced. And the total pressure loss coefficient at the stator exit reduces by 3.724%. In addition，the non-axisymmetric end wall contouring on hub has few influences on the flow field upper half of the blade.

Key words: High pressure turbine；Non-axisymmetric end wall；Optimization design；Total pressure loss coefficient

赵刚剑,刘波,那振喆,曹志远. 采用新型非轴对称端壁优化设计方法提高涡轮性能的数值研究[J]. 推进技术, 2014, 35(5): 597-602.

ZHAO Gang-jian,LIU Bo,NA Zhen-zhe,CAO Zhi-yuan. Improving the Performance of Turbine Based on a New Optimization Design Method[J]. Journal of Propulsion Technology, 2014, 35(5): 597-602.

参考文献

[1] Kooper F C， Milano R， Vanco M. An Experimental Investigation of Endwall Profiling in a Turbine Blade Cascade[J]. AIAA Journal ， 1981， 19(8): 1033-1040.
[2] Rose M G. Non-Axisymmetric End Wall Profiling in the HP NGVs of an Axial Flow Gas Turbine[R]. ASME 94- GT -249.
[3] Harvey N W， Mark M G， Taylor M D， et al. Non-Axisymmetric Turbine End Wall Design: Part I: Three-dimensional Linear Design System[R]. ASME 99- GT -337.
[4] Hartland J C， Gregory-Smith D G， Harvey N W， et al. Non-axisymmetric Turbine End Wall Design: Part II: Experimental Validation[R]. ASME 99- GT -338.
[5] Brennan G， Harvey H W， Rose M G， et al. Improving the Efficiency of the Trent 500 HP Turbine Using Non-axisymmetric End Wall: PartI: Turbine Design[R]. ASME 2001- GT -0444.
[6] Rose M G， Harvey N W， Seaman P. Improving the Efficiency of the Trent 500 HP Turbine Using Non-axisymmetric End Wall: PartII: Experimental Validation[R]. ASME 2001- GT -0505.
[7] Marc G N， Ralf-D Baier. Experimentally Verified Numerical Optimisation of a 3D- parameterized Turbine Vane with Non-axisymmetric End Walls[R]. ASME 2003- GT -38624.
[8] Torre D， Vázquez R， De la Rosa Blanco E， et al. A New Alternative for Reduction of Secondary Flows on Low Pressure Turbines[R]. ASME 2006- GT -91002.
[9] Praisner T J， Alley Bradley E， Grover E A， et al. Application of Non-axisymmetric End Wall Contouring to Conventional and High-lift Turbine Airfoils[R]. ASME 2007- GT -27579.
[10] Bao Q N， Kyle D S. A Simple Procedure to Reduce Secondary Flow Effect in Turbine Nozzle Guide Vanes[R]. ASME 2007- GT -28159.
[11] Sonoda T， Hasenj?ger M， Arima T， et al. Effect of Endwall Contouring on Performance of Ultra-low Aspect Ratio Transonic Turbine Inlet Guide Vanes[R]. ASME 2007- GT -28210.
[12] 李国君，马晓永，李军. 非轴对称端壁成型及其对叶栅损失影响的数值研究[J]. 西安交通大学学报， 2005， 11(39): 1169-1172.
[13] 郑金，李国君，李军，等. 一种新非轴对称端壁成型方法的数值研究[J]. 航空动力学报， 2007， 22(9): 1487-1491.
[14] 李国君，任光辉，马晓永，等. 叶栅非轴对称端壁成型技术的初步研究[J]. 工程热物理学报， 2006 ( S 1): 97-100.
[15] 刘波，管继伟，陈云永. 用端壁造型减小涡轮叶栅二次流损失的数值研究[J].推进技术， 2008， 29(3): 355-359.( LIU Bo， GUAN Ji-wei， CHEN Yun-yong， et al．Numerical Investigation for Effect of Non-Axisymmetric Endwall Profiling on Secondary Flow in Turbine Cascade [J]． Journal of Propulsion Technology ， 2008， 29( 3) : 355-359．)