Controlled-vortex Design of Turbine Based on Through-flow CFD Method

被引：0
|
作者：
Jiang Z. [1 ,2 ]
Fan Z. [2 ]
Qiu M. [1 ,2 ]
Chen J. [1 ,2 ]
机构：
[1] Aerospace Technology Institute, China Aerodynamics Research and Development Center, Sichuan Province, Mianyang
[2] China Aerodynamics Research and Development Center, Sichuan Province, Mianyang
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 20期
关键词：
controlled-vortex design; loss distribution; through-flow CFD technology; time-marching method; turbine aerodynamic design;
D O I：
10.13334/j.0258-8013.pcsee.221970
中图分类号：
学科分类号：
摘要：
In order to achieve precise aerodynamic design of high performance turbine and improve efficiency, a controlled-vortex turbine design method based on Euler through-flow CFD technology has been developed, which can control blade row exit circulation. The design method solves 2D flow equations by time-marching approach, and utilizes third order Godunov scheme, which has TVD property with alternatively explicit-implicit approach in time direction. Loss coefficient will be redistributed radially after calculated by loss model, and turbine aerodynamic design will be commenced once blade row exit circulation distribution is given. A single stage turbine of aeroengine is designed in free-vortex and controlled-vortex style separately by the design method. And 3D CFD is implemented to verify turbine aerodynamic performance. After comparison and analysis, it can be found that the design method can effectively achieve controlled-vortex design. Compared with 3D simulation results, the mass flow error of through-flow results is around 0.2%, the expansion ratio error is around -0.02, and the efficiency error is no more than 0.77%. Meanwhile, controlled-vortex design can provide higher efficiency and higher rotor hub reaction than free-vortex design, with weaker secondary flow and flow separation, and less loss at blade hub. © 2023 Chinese Society for Electrical Engineering. All rights reserved.
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页码：7994 / 8004
页数：10
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