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Effect of gradient approximations on aero-structural gradient-based wing optimization

Abu-Zurayk, Mohammad and Ilic, Caslav and Schuster, Andreas and Liepelt, Rene (2017) Effect of gradient approximations on aero-structural gradient-based wing optimization. In: EUROGEN 2017. EUROGEN2017, 13-15 Sep 2017, Madrid, Spanien.

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This paper presents several studies in the context of gradient-based aerostructural optimization. The studies are motivated by the computational limitations and constraints industry has when attempting to run such ptimization. The aero-structure wing optimization problem engages two parts; one that improves the aerodynamic performance and the other reduces the mass under the critical load cases. To setup a realistic test case, the aerodynamic critical load cases required for sizing the wing of the XRF1 configuration are identified, with the help of high-fidelity approaches and ROMs, and are afterwards employed to size the wing. Then the magnitudes of the disciplinary and the cross disciplinary gradients are investigated for the sized wing to check which of them drive the aerostructural optimization under the given parameterization. It was found that these gradients might differ in two to three orders of magnitude. At the end the configuration is aero-structurally optimized with different levels of gradient accuracy.

Item URL in elib:https://elib.dlr.de/115556/
Document Type:Conference or Workshop Item (Speech)
Title:Effect of gradient approximations on aero-structural gradient-based wing optimization
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Abu-Zurayk, MohammadMohammed.Abu-Zurayk (at) dlr.deUNSPECIFIED
Ilic, CaslavCaslav.Ilic (at) dlr.deUNSPECIFIED
Schuster, AndreasAndreas.Schuster (at) dlr.deUNSPECIFIED
Liepelt, ReneRene.Liepelt (at) dlr.deUNSPECIFIED
Journal or Publication Title:EUROGEN 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:MDO, Aero-structural Optimization, Adjoint Approach, Gradient Approximation
Event Title:EUROGEN2017
Event Location:Madrid, Spanien
Event Type:international Conference
Event Dates:13-15 Sep 2017
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 - VicToria (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, BS
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Aeroelasticity > Aeroelastic Simulation
Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Abu-Zurayk, Mohammad
Deposited On:13 Dec 2017 10:22
Last Modified:31 Jul 2019 20:13

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