Adjoint⁃based aerodynamic design optimization of transonic turbine cascades considering different constraints

被引：0
|
作者：
Li J. [1 ]
Luo J. [1 ]
Cao Z. [2 ]
机构：
[1] School of Aeronautics and Astronautics, Zhejiang University, Hangzhou
[2] School of Power and Energy, Northwestern Polytechnical University, Xi'an
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2021年 / 36卷 / 09期
关键词：
Adjoint method; Aerodynamic design optimization; Boundary condition; Constraint; Turbine cascade;
D O I：
10.13224/j.cnki.jasp.20200468
中图分类号：
学科分类号：
摘要：
A simplified method based on non⁃reflecting boundary theory for determining the inlet and outlet boundary conditions of adjoint equations was introduced, by which the aerodynamic design optimization of turbomachinery blade considering different constraints was investigated.The results showed that the simplified adjoint equations strongly coupling with flow under inlet and outlet boundary conditions were sufficiently accurate and applicable in different constrained optimization design.After outlet specific entropy design optimization without constraints, the outlet specific entropy decreased by 0.253%, with varied passage area and outlet flow angle.Considering the constraints of outlet flow angle and passage area separately and the constraints from both of them, the outlet specific entropy after optimization decreased by 0.176%, 0.227% and 0.164%, respectively.The aerodynamic performance of the optimized blades was significantly improved, while the optimization constraints were maintained.Moreover, the results demonstrated that changing the curvature of blade profile weakened the shock wave effectively.When the curvature of front portions decreased, the flow velocity decelerated and the outlet flow angle increased, meanwhile when the curvature of front portions changed slightly, the outlet flow angle was constrained better. © 2021, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：1986 / 1998
页数：12
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