Reduced order modeling of three dimensional external aerodynamic flows

Vega De Prada, Jose Manuel and Alonso, D. and Velázquez, Angel and Pablo, Valentín de (2012). Reduced order modeling of three dimensional external aerodynamic flows. "Journal of Aerospace Engineering", v. 25 (n. 4); pp. 588-599. ISSN 0893-1321. https://doi.org/10.1061/(ASCE)AS.1943-5525.0000148.

Description

Title: Reduced order modeling of three dimensional external aerodynamic flows
Author/s:
  • Vega De Prada, Jose Manuel
  • Alonso, D.
  • Velázquez, Angel
  • Pablo, Valentín de
Item Type: Article
Título de Revista/Publicación: Journal of Aerospace Engineering
Date: June 2012
ISSN: 0893-1321
Volume: 25
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A method is presented to construct computationally efficient reduced-order models (ROMs) of three-dimensional aerodynamic flows around commercial aircraft components. The method is based on the proper orthogonal decomposition (POD) of a set of steady snapshots, which are calculated using an industrial solver based on some Reynolds averaged Navier-Stokes (RANS) equations. The POD-mode amplitudes are calculated by minimizing a residual defined from the Euler equations, even though the snapshots themselves are calculated from viscous equations. This makes the ROM independent of the peculiarities of the solver used to calculate the snapshots. Also, both the POD modes and the residual are calculated using points in the computational mesh that are concentrated in a close vicinity of the aircraft, which constitute a much smaller number than the total number of mesh points. Despite these simplifications, the method provides quite good approximations of the flow variables distributions in the whole computational domain, including the boundary layer attached to the aircraft surface and the wake. Thus, the method is both robust and computationally efficient, which is checked considering the aerodynamic flow around a horizontal tail plane, in the transonic range 0.4?Mach number?0.8, ?3°?angle of attack?3°.

More information

Item ID: 15415
DC Identifier: http://oa.upm.es/15415/
OAI Identifier: oai:oa.upm.es:15415
DOI: 10.1061/(ASCE)AS.1943-5525.0000148
Official URL: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29AS.1943-5525.0000148?journalCode=jaeeez
Deposited by: Memoria Investigacion
Deposited on: 21 Apr 2015 10:24
Last Modified: 21 Apr 2015 10:24
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