Aerodynamic optimization design of mixed exhaust nozzle based on FFD technique

被引：0

作者：

Xu D. ^{[1
]}

Xie M. ^{[1
]}

Chen B. ^{[1
]}

Cai J. ^{[1
]}

Huang X. ^{[1
]}

Wan D. ^{[1
]}

机构：

[1] Hunan Aviation Powerplant Research Institute, Aero Engine Corporation of China, Zhuzhou, 412002, Hunan

来源：

Hangkong Dongli Xuebao/Journal of Aerospace Power | 2018年 / 33卷 / 11期

关键词：

Automatic design and simulation process; Free form deformation(FFD) technique; Geometric feature extraction; Mixed exhaust nozzle; Optimal Latin hypercube design(OLHD);

D O I：

10.13224/j.cnki.jasp.2018.11.026

中图分类号：

学科分类号：

摘要：

As a mixed exhaust nozzle was taken as the research object, the mapping relation between the arbitrary shape deformation volume and a mixed exhaust nozzle sketch was built. Through movement of the control points, synchronously large curvature deformation of the profiles and grid was realized. What's more, experimental samples were established with application of the optimal Latin hypercube design (OLHD) method. On this basis, as the free form deformation (FFD) and CFD modules were driven by the Isight software, all the sample points were calculated. According to the simulation results, optimum sketch was selected with 0.6% increase of the thrust coefficient and 0.6% reduction of the total pressure loss. Finally, multi-lines and arcs were adopted to parameterize the optimum sketch with no performance degeneration, which can be used in engineering practice. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.

引用

页码：2796 / 2801

页数：5

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