Modification of Transonic Wing Design Method
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摘要: 以Takanashi提出的"正反迭代、余量修正"的原理为基础,针对其当机翼上表面存在较强的超音速流动时,解的收敛性不好的问题,对Takanashi方法进行改进.具体方法就是在控制方程的双曲部分引入基于迎风格式的附加项.通过对某干线飞机机翼的设计,证明了改进后的方法是成功的,设计结果在超音区有很好的收敛性.Abstract: The residual-correction design method for transonic wings with prescribed pressure distribution developed by Takanashi was modified. In order to guarantee the convergence of the design in supersonic flow, Takanashi method could be modified by introducing some upwind based operator to the governing equation in hyperbolic parts. Results of the redesign of a wing indicate that the improved method can overcome the convergence problem of the original method in supersonic region and then is more practical in engineering application.
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Key words:
- wings /
- supersonic flow /
- shock waves /
- up-wind discrezation
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[1] Takanashi S. An iterative procedure for three-dimensional transonic wing design by the integral equation method . AIAA-84-2155,1984 [2] 华 俊. 跨应速翼型和机翼的设计研究 . 西安:西北工业大学飞机系, 1989 Hua J. Design research for transonic airfoils and wing . Xian:Aircraft Department, Northwestern Polytechnical University, 1989(in Chinese) [3] Hua J, Zhang Z Y. Transonic wing design for transport aircraft . ICAS-90-3.7.4,1990 [4] Bartelheimer W. Design of transonic airfoils and wings based on the solution of the Euler/Navier-Stokes equation . Germany:German Aerospace Center, 1994
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