An alternative method to study cross-flow instabilities based on high order dynamic mode decomposition

Le Clainche Martinez, Soledad and Han, Zhong Hua and Ferrer Vaccarezza, Esteban (2019). An alternative method to study cross-flow instabilities based on high order dynamic mode decomposition. "Physics of Fluids", v. 31 (n. 9); ISSN 1070-6631. https://doi.org/10.1063/1.5110697.

Description

Title: An alternative method to study cross-flow instabilities based on high order dynamic mode decomposition
Author/s:
  • Le Clainche Martinez, Soledad
  • Han, Zhong Hua
  • Ferrer Vaccarezza, Esteban
Item Type: Article
Título de Revista/Publicación: Physics of Fluids
Date: September 2019
ISSN: 1070-6631
Volume: 31
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

We present a novel method for the determination of N-factors in cross-flow transition scenarios. The method considers numerical simulations, in which a turbulent model is applied downstream from a predetermined point and solves a laminar flow upstream from this point. The solution is postprocessed using higher order dynamic mode decomposition to extract the leading spatial mode in several small sections along the streamwise direction. The spatial evolution of the amplitude of this mode will determine the N-factor. The results presented are compared with experimental measurements and linear stability theory, showing the good performance of this novel method, which does not assume parallel flow assumptions, is automatic and computationally efficient.

More information

Item ID: 67016
DC Identifier: https://oa.upm.es/67016/
OAI Identifier: oai:oa.upm.es:67016
DOI: 10.1063/1.5110697
Official URL: https://aip.scitation.org/doi/10.1063/1.5110697
Deposited by: Memoria Investigacion
Deposited on: 20 Dec 2021 11:08
Last Modified: 20 Dec 2021 11:08
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