Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Reduced order modeling of three dimensional external aerodynamic flows
Year:2012
Research Areas
  • Fluyd dynamics,
  • Engineering
Information
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°.
International
Si
JCR
Si
Title
Journal of Aerospace Engineering
ISBN
0893-1321
Impact factor JCR
0,924
Impact info
Volume
25
10.1061/(ASCE)AS.1943-5525.0000148
Journal number
4
From page
588
To page
599
Month
JUNIO
Ranking
Participants
  • Autor: Jose Manuel Vega De Prada (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
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