Constrained and non-constrained aerodynamic optimization using the adjoint equations approach

被引:5
|
作者
Hekmat, Mohamad Hamed [1 ]
Mirzaei, Masoud [1 ]
Izadpanah, Ehsan [2 ]
机构
[1] KN Toosi Univ Technol, Dept Aerosp Engn, Tehran, Iran
[2] Yazd Univ, Dept Mech Engn, Yazd, Iran
关键词
Adjoint equations; Constrained optimization; Euler equations; Non-constrained optimization;
D O I
10.1007/s12206-009-0707-7
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In this research, the continuous adjoint method is applied to optimize an airfoil in subsonic and transonic flows. An inverse design problem is solved to evaluate the ability of the optimization algorithm and then, two types of optimizations, constrained and non-constrained, are investigated in a drag minimization problem. In the non-constrained drag minimization problem, the optimization is performed in a fixed angle of attack with neither geometric nor aerodynamic constraint, but in the constrained drag minimization problem, the optimization is performed in a fixed lift coefficient. Comparison of the results of these two optimizations shows the effects of the constraint on the optimization trend and the optimized geometry. Moreover, imposing the aerodynamic constraint increased the computational costs of the adjoint method. In constrained and non-constrained drag minimization problems, the surface points are adopted as design variables to show the performance of the adjoint equations approach in problems with numerous design variables.
引用
收藏
页码:2479 / 2491
页数:13
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