An alternative method to calculate cross-flow instabilities

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
Author/s:
  • Le Clainche Martínez, Soledad
  • Wu, Meng
  • Han, Zhong
  • Ferrer, Esteban
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

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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
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
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