Aerospace Science and Technology ( IF 5.6 ) Pub Date : 2021-07-12 , DOI: 10.1016/j.ast.2021.106940 Arthur Rizzi 1 , James M. Luckring 2
Separated flows often set aerodynamic limits for an aircraft flight envelope, and many of these flows remain difficult to predict with Computational Fluid Dynamics. This paper reviews and explores how CFD simulations have been used for predicting separated flows, and the associated aerodynamic performance, throughout the flight envelope, giving special focus to NATO aircraft. The review entails: a summary of the physics of flow separation that is especially difficult to model numerically; an historical sketch of seven decades of CFD developments to meet many of the challenges of separated flow predictions; six case studies for an assessment of the current CFD capabilities; and future prospects for further improvements in the CFD simulations. Significant advances are still needed for separated flow simulations to become practical with reliabilities comparable to attached flow simulations. Some recommendations for future work are included.
中文翻译:
CFD 在与军用飞机相关的分离流模拟中的历史发展和使用
分离的流动通常为飞机飞行包线设定空气动力学限制,并且这些流动中的许多仍然难以使用计算流体动力学进行预测。本文回顾并探讨了如何使用 CFD 模拟来预测整个飞行包线中的分离流和相关的空气动力学性能,特别关注北约飞机。审查内容包括: 对特别难以进行数值建模的流动分离物理学的总结;CFD 发展七年的历史概述,以应对分离流预测的许多挑战;用于评估当前 CFD 能力的六个案例研究;以及 CFD 模拟进一步改进的未来前景。分离流模拟仍需取得重大进展,以使其具有可与附加流模拟相媲美的可靠性。包括对未来工作的一些建议。