基于伴随方法的叶片三维气动外形优化设计  

Three dimensional aerodynamic shape optimum design for blade based on adjoint method

作　　者：刘浩[1,2] 张雷[1] 李霄琳[1] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130025 [2]富奥汽车零部件股份有限公司研发中心,吉林长春130013

出　　处：《中南大学学报（自然科学版）》2016年第2期436-442,共7页Journal of Central South University:Science and Technology

基　　金：国家高技术研究发展计划(863计划)项目(2012AA041304);高等学校博士学科点专项科研基金资助项目(20110061110022)~~

摘　　要：在计算流体动力学的基础上,通过引入离散黏性伴随方法和基于径向基函数的网格变形技术,构建一种高效的叶片气动优化设计系统。利用此优化设计系统对跨音速转子Rotor37的叶片进行优化设计。研究结果表明:在近最大等熵效率工况点下,优化后叶片流道激波强度和流动损失有效降低,转子的总压比提高0.352%,等熵效率提高0.339%,质量流量提高0.362%。与传统的叶片优化设计方法相比,此优化方法能够显示分析叶片外形与目标函数之间的关系,并有效地降低优化设计时间。Based on the computational fluid dynamics, a high-efficiency aerodynamic optimum design system of blade was constructed by using discrete viscous adjoint equation method and combining radial basis function mesh deformation technology. This optimum design system was applied to optimize the profile of an transonic rotor Rotor37. The results show that the shock wave intensity and flow loss decrease in the flow passage, and the total pressure ratio increases by 0.352%, the adiabatic efficiency by 0.339%, and the mass flow by 0.362% under the condition of near peak adiabatic efficiency. Compared with the traditional blade optimum design method, the proposed optimization system can analyse the relationship between blade shape and the cost function explicitly, and reduce the time of optimized design effectively.

关 键 词：计算流体动力学 伴随方法 径向基函数 网格变形 优化设计 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]