Industrial strength aerodynamic design optimization for complex geometries

该合作研究项目的主要目标是为先进气动系统的气动设计优化开发一个工业强度框架。该计划建立在由Nadarajah教授领导的麦吉尔大学计算空气动力学小组和庞巴迪航空航天公司（BA）高级空气动力学小组之间过去和现在成功的合作伙伴关系的基础上。这些合作伙伴开发了先进的数值技术，从流动求解技术和分离涡模拟到气动设计优化（ADO）数值环境。这里的目标是扩展数值框架来设计下一代两个先进的空气动力学子系统：先进的小翼和高升力系统。研究目标将通过BA的两个数值工具的进步来实现；首先，采用多块结构二阶有限体积流及其伴随求解器FANSC-Adjoint进行粘滞跨声速流动的分析与设计；其次是DRAGON，一种新的混合非结构化二阶有限体积代码，用于模拟高升力配置的流动。本提案中提出的任务将通过四个目标开发必要的新算法。学术研究团队将在伴随方程的稳定技术，刚性优化问题的优化算法，以及通过最优方法的各向异性网格适应方面做出新的贡献。研究生将通过与BA合作获得实际的飞机设计经验。这项研究的影响将使加拿大在当前的飞机技术中保持领先地位，并在航空航天工业中获得经济优势。

The primary objective of this collaborative research project is to develop an industrial strength framework for the aerodynamic design optimization of Advanced Aerodynamic Systems. The initiative builds on past and current successful partnerships between the McGill University Computational Aerodynamics Group lead by Professor Nadarajah and the Advanced Aerodynamics Group at Bombardier Aerospace (BA). These partnerships have developed advanced numerical techniques from flow solver technology and detached eddy simulation to an aerodynamic design optimization (ADO) numerical environment. The objective here is to extend the numerical framework to design the next-generation of two advanced aerodynamic sub-systems: advanced winglet and high-lift systems. The research objectives will be met through the advancement of BA's two numerical tools; first, FANSC-Adjoint, a multi-block structured second-order finite-volume flow and adjoint solver for the analysis and design in viscous transonic flows; second, DRAGON, a new hybrid unstructured-structured second-order finite-volume code for simulating flows over high-lift configurations. The task presented in this proposal will develop the necessary novel algorithms through four objectives. The academic research team will introduce novel contributions towards stabilization techniques for the adjoint equations, optimization algorithms for stiff optimization problems, and anisotropic grid-adaptation through an optimal approach. Graduate students will gain practical aircraft design experience by working with BA. The impact of the research will enable Canada to remain a leader in current aircraft technology and to gain an economic advantage in the aerospace industry.