摘要
层流技术是未来发展“绿色航空”的核心技术,巨大的减阻潜力使其成为航空领域内的研究热点。从喷气式客机具有的流动物理特征和转捩现象本质出发,阐述了自然层流(NLF)和混合层流(HLFC)技术的实现原理和适用范围,综述了国际上NLF/HLFC技术的研究现状及发展趋势。围绕基于CFD的层流翼设计技术前沿问题,从面向工程应用的转捩预测方法、非梯度类优化、梯度优化以及不确定性分析和鲁棒优化多个层面,系统论述了层流翼设计方法的研究现状和最新进展。同时,讨论了层流翼气动设计与全湍流气动设计问题的异同点,梳理了NLF和HLFC机翼气动设计理论。最后,顺应喷气式客机技术发展趋势,总结了层流设计技术面临的问题,给出了层流翼气动优化设计技术的未来发展方向和建议。
The laminar flow technology is the core technology for the future development of "green aviation", and its huge drag reduction potential makes it a research hotspot in the aviation field. This article starts from the physical characteristics of flow and the nature of transition phenomena of jet airliners, and expounds the realization principle and application scope of the NLF and HLFC technology. The global research status and development trend of the NLF/HLFC technology are reviewed. Focusing on the cutting-edge issues of the CFD-based laminar flow wing design technology, we systematically discuss the laminar flow from multiple levels of engineering application-oriented transition prediction methods, gradient-free/gradient-based optimization methods, uncertainty analysis and the robust optimization method. Meanwhile, the similarities and differences between the laminar flow wing aerodynamic design and full turbulent aerodynamic design are discussed, and the aerodynamic design theories of the NLF and HLFC wing are then sorted out. Finally, based on the development trend of the jet airliner technology, the problems faced by the laminar flow design technology are summarized, and the future development direction and suggestions for the aerodynamic optimization design technology of laminar flow wings are presented.
作者
杨体浩
白俊强
段卓毅
史亚云
邓一菊
周铸
YANG Tihao;BAI Junqiang;DUAN Zhuoyi;SHI Yayun;DENG Yiju;ZHOU Zhu(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China;AVIC The First Aircraft Design and Researoh Institute,Xi'an 710089,China;School of Aerospace Engineering,Xi'an Jiaotong University,Xi'an 710049,China;China Aerodynamic Research and Development Center,Mianyang 621000,China)
出处
《航空学报》
EI
CAS
CSCD
北大核心
2022年第11期18-54,共37页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(11902320,12002284)。
关键词
减阻
优化设计
自然层流
混合层流
计算流体力学
drag reduction
optimization design
natural laminar flow
hybrid laminar flow
computational fluid dynamic
