一种旋翼翼型多点多约束气动优化设计策略  

Multi-point Aerodynamic Optimization Design Strategy of Rotor Airfoil With Multi-constrain Conditions

作　　者：丁存伟[1] 杨旭东[1] 

机构地区：[1]西北工业大学翼型叶栅国家重点实验室,陕西西安710072

出　　处：《航空计算技术》2013年第1期52-57,共6页Aeronautical Computing Technique

基　　金：国家自然科学基金项目资助(11272263);陆航"十二五"预研项目资助(412010102)

摘　　要：充分考虑伴随方法的梯度求解的准确性、CFD计算量小等显著优点,研究了引入基于伴随方法的梯度信息的响应面模型构造问题,发展了基于梯度信息改进的响应面方法,提高了多设计变量适应性及优化效率;针对悬停/前飞/机动状态下的旋翼翼型升阻比、阻力发散马赫数、最大升力等气动特性精确分析需求,分别提出了对应的合理气动计算策略;为有效适应旋翼翼型复杂气动设计问题,发展了基于伴随方法与响应面法有效结合、针对悬停/前飞/机动状态对应气动计算策略的一种较实用高效的旋翼翼型气动优化设计策略,提高了计算精度、鲁棒性与优化效率,进行了典型OA309旋翼翼型算例验证,优化后旋翼翼型与原OA309翼型相比,综合性能有较好改善,研究表明,所发展的气动设计策略是有效、可行的。Considering the high accuracy, small amount of calculation and other advantages of the adjoint method for solving the gradient, the traditional response surface method is improved by introducing gradi- ent calculated by the adjoint method in response surface model construction. The adaptability and optimi- zation efficiency of this new method are improved in multi- variables design problem. According to the de- mand for accurate aerodynamic analysis of rotor airfoil, such as lift- drag ratio, drag- rise Mach number and the maximum lift in hover/forward flight./maneuver state, a reasonable aerodynamic calculation strate- gy for rot airfoil in different state is proposed. Based on the improved response surface method and the aerodynamic calculation strategy for rotor airfoil, a practical and efficient optimization design strategy is developed. The calculation accuracy, robustness and efficiency of optimization are improved significantly. Aerodynamic optimization design of typical OA309 rot airfoil is presented. Compared with original OA309 airfoil, the optimized airfoil has better comprehensive performance. The research shows that the optimiza- tion design strategy developed in this paper is effective and feasible.

关 键 词：旋翼翼型 多点多约束 响应面方法 伴随方法 CFD技术 MSES软件 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]