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Accelerated convergence of static aeroelasticity using low-fidelity aerodynamics

Jovanov, Kristofer and De Breuker, Roeland and Abdalla, M.M. and Dillinger, Johannes (2015) Accelerated convergence of static aeroelasticity using low-fidelity aerodynamics. 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 5-9 Jan 2015, Kissimmee, Florida, USA.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.2514/6.2015-0175

Abstract

An approach to reduce the computational cost of high-fidelity aeroelastic problems is presented. The structural analysis is performed by the finite element analysis program Nastran and aerodynamic loads are estimated by the panel code A502/Panair. In this paper a defect-correction equation is formulated to determine the static aeroelastic solution. A computationally inexpensive vortex-lattice method is used to generate aerodynamic forces and gradients that accelerate the static aeroelastic convergence by reducing the total number of A502/Panair load calculations. The defect-correction approach is compared to a conventional serial staggered scheme with Aitken acceleration. Results indicate that the defect-correction approach performs well with reduced computation time, in particular for strongly coupled problems that exhibit large deformations.

Item URL in elib:https://elib.dlr.de/99348/
Document Type:Conference or Workshop Item (Lecture)
Title:Accelerated convergence of static aeroelasticity using low-fidelity aerodynamics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jovanov, KristoferUNSPECIFIEDUNSPECIFIED
De Breuker, RoelandAerospace Structures, Delft University of TechnologyUNSPECIFIED
Abdalla, M.M.Aerospace Structures, Delft University of TechnologyUNSPECIFIED
Dillinger, Johannesjohannes.dillinger (at) dlr.deUNSPECIFIED
Date:January 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CFD correction; aeroelastic loads
Event Title:56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Event Location:Kissimmee, Florida, USA
Event Type:international Conference
Event Dates:5-9 Jan 2015
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Dillinger, Johannes
Deposited On:21 Dec 2015 15:07
Last Modified:10 May 2016 23:34

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