An alternative method to calculate cross-flow instabilities

Soledad Le Clainche Martinez, Meng Meng Wu, Zhong Hua Han, Esteban Ferrer

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

This work presents a new method to compute instabilities associated to cross-flow transition scenarios. The method analyses base flows issued from CFD simulations (RANS model) using higher order dynamic mode decomposition (HODMD). The flow field is then approximated as an expansion of modes and it is possible to identify the primary and secondary flow instabilities, in cross-flows. The good performance of this novel method is first validated by locating the transition point related to the first instability in a low-speed 2D NLF0416 airfoil. Then, 3D cross-flow instabilities over a wing with 40° back-sweep angle (shaped from a NACA642A015 airfoil) are presented.

源语言英语
主期刊名2018 Fluid Dynamics Conference
出版商American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624105531
DOI
出版状态已出版 - 2018
活动48th AIAA Fluid Dynamics Conference, 2018 - Atlanta, 美国
期限: 25 6月 201829 6月 2018

出版系列

姓名2018 Fluid Dynamics Conference

会议

会议48th AIAA Fluid Dynamics Conference, 2018
国家/地区美国
Atlanta
时期25/06/1829/06/18

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