空气动力学学报Issue(6)：812-817,6.DOI:10.7638/kqdlxxb-2014.0054
自然层流机翼气动外形优化研究
Study of aerodynamic shape optimization for natural laminar wing
马晓永 1张彦军 2段卓毅 3郭洪涛 3李权4
作者信息
- 1. 中国空气动力研究与发展中心 空气动力学国家重点实验室，四川 绵阳 621000
- 2. 中国空气动力研究与发展中心 高速空气动力研究所，四川 绵阳 622762
- 3. 中国航空工业集团公司 第一飞机设计研究院，陕西 西安 710089
- 4. 中国空气动力研究与发展中心 高速空气动力研究所，四川 绵阳 622762
- 折叠
摘要
Abstract
Natural laminar wing is a potential technology to minimize the drag coefficient of an aircraft.The code of TRANAIR is used to optimize a natural laminar wing with subject to the constraints on lift coefficient,pitching moment coefficient and geometries height(20%,80% and max height),and the optimization are carried out with multi-points conditions,CL =0.45 (M:0.735,0.755,0.765,0.775)and CL =0.50(M:0.755).The nonlinear full potential equation is used to solve flow field,sequential quadratic programming and adaptive refinement Cartesian grids are applied to optimize the aerodynamic shape.Two parameter methods,non-uniform relational B-spline (NURBS)and class function/shape function transformation (CST),are used to represent wing shape and update the new geometry,although the CST method is usually used to describe aerofoil and the NURBS is more applied on three-dimensional curved surface.The optimization results shown that the NURBS method is better than the CST one,and the transi-tion position of laminar flow to turbulent flow are moved backward obviously,the laminar region are more wide than before,and the CD of the optimized wing decreased 4.5% at CL =0.45(M:0.755).关键词
自然层流机翼/气动外形优化/TRANAIR/参数化方法/数值模拟Key words
natural laminar wing/aerodynamic shape optimization/TRANAIR/parameter-ization/numerical simulation分类
航空航天引用本文复制引用
马晓永,张彦军,段卓毅,郭洪涛,李权..自然层流机翼气动外形优化研究[J].空气动力学学报,2015,(6):812-817,6.
