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《ACTA AERODYNAMICA SINICA》 2000-03
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Multiobjective Optimization Design of Transonic Airfoils with Constraints Based on Navier-Stokes Equations

QIAN Rui zhan 1,QIAO Zhi de 2,SONG Wen ping 2 (1. Xi'an Aircraft Design and Research Institute,Xi'an 710089; 2. Northwestern Polytechnical University,Xi'an 710072)  
A design method of transonic airfoils is developed which couples viscous flow analysis and numerical optimization to search for a airfoil geometry with improved aerodynamic performance at single or multiple design point, subject to specified constraints. Aerodynamic quantities such as lift,drag are computed by the flow solver for a certain configuration and are used in defining an objective function to be minimized by the optimizer. The flow solver is based on Reynolds averaged Navier Stokes equations which provide more accurate models of the flow field than previously employed full potential equation or Euler equations,so the reliability of optimization results is greatly enhanced.Classical Quasi Newton Method and Sequential Unconstrained Minimization Technique(SUMT) are adopted as optimization algorithms. Two examples are presented which demonstrate the method in this paper is very attractive for practical use because of its high design quality and reasonable computational cost.
【Fund】: 国防科技重点实验基金
【CateGory Index】: V211.41
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