2021-01-21T05:30:07Z
http://oa.upm.es/cgi/oai2
oai:oa.upm.es:15415
2015-04-21T10:24:37Z
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Reduced order modeling of three dimensional external aerodynamic flows
Vega De Prada, Jose Manuel
Alonso, D.
Velázquez, Angel
Pablo, Valentín de
Aeronautics
Physics
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°.
E.T.S.I. Aeronáuticos (UPM)
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
2012-06
info:eu-repo/semantics/article
Article
Journal of Aerospace Engineering, ISSN 0893-1321, 2012-06, Vol. 25, No. 4
PeerReviewed
application/pdf
eng
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29AS.1943-5525.0000148?journalCode=jaeeez
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)AS.1943-5525.0000148
http://oa.upm.es/15415/