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An alternative method to calculate cross-flow instabilities
Citation
Le Clainche Martínez, Soledad and Wu, Meng and Han, Zhong and Ferrer, Esteban (2018). An alternative method to calculate cross-flow instabilities. In: "AIAA AVIATION Forum, 2018 Fluid Dynamics Conference", 25-28 Jun 2018, Atlanta, Georgia, EE.UU.. ISBN 9781510868861. https://doi.org/10.2514/6.2018-3700.
Description
| Title: | An alternative method to calculate cross-flow instabilities |
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| Author/s: |
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| Item Type: | Presentation at Congress or Conference (Article) |
| Event Title: | AIAA AVIATION Forum, 2018 Fluid Dynamics Conference |
| Event Dates: | 25-28 Jun 2018 |
| Event Location: | Atlanta, Georgia, EE.UU. |
| Title of Book: | Fluid Dynamics Conference 2018 : held at the AIAA Aviation Forum 2018 |
| Date: | 2018 |
| ISBN: | 9781510868861 |
| Subjects: | |
| Faculty: | E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM) |
| Department: | Matemática Aplicada a la Ingeniería Aeroespacial |
| Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
Abstract
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.
More information
| Item ID: | 54698 |
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| DC Identifier: | http://oa.upm.es/54698/ |
| OAI Identifier: | oai:oa.upm.es:54698 |
| DOI: | 10.2514/6.2018-3700 |
| Official URL: | https://arc.aiaa.org/doi/book/10.2514/MFD18 |
| Deposited by: | Memoria Investigacion |
| Deposited on: | 27 Jan 2020 10:27 |
| Last Modified: | 27 Jan 2020 10:27 |
