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Integration of High-Fidelity Analysis Tools in MDO Frameworks for HPC

Backhaus, Thomas and Gottfried, Sebastian and Ilic, Caslav and Merle, Andrei and Stück, Arthur (2019) Integration of High-Fidelity Analysis Tools in MDO Frameworks for HPC. In: AIAA Aviation 2019 Forum. AIAA Aviation 2019 Forum, 17.-21. Jun. 2019, Dallas, USA. DOI: 10.2514/6.2019-3107

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Abstract

Two framework-based MDO approaches currently being developed and implemented at DLR are presented in this paper. Both target the integration of high-fidelity simulation methods into multidisciplinary aircraft design optimization processes. Owing to the different levels of optimization problem complexity, the levels of code integration differ significantly. In the first case, the multiphysics HPC environment FlowSimulator and its high-fidelity analysis plugins are systematically modularized to facilitate the flexible construction of high-fidelity MDO processes using OpenMDAO's Modular Analysis and Unified Derivatives (MAUD) approach. Based on a FlowSimulator-OpenMDAO synthesis we rebuild and run an existing gradient-based steady-state aeroelastic shape optimization process that takes advantage of the FlowSimulator environment to perform the multidisciplinary evaluations in the optimization process. The major HPC components involved, which are plugins to the FlowSimulator environment, are the viscous CFD method TAU, a finite-element structural model, a linear elasticity-based mesh deformation method, an algorithm enforcing trimmed flight equilibria, methods for surface mesh interpolation, and a reduced-order model (ROM) of a parametric CAD description that is used in the loop. The second MDO approach presented here relies on a new framework solution also focusing on the HPC integration of high-fidelity simulation and optimization methods. The approach has been conceived to handle strongly collaboration-intensive MDO for transport aircraft design. A specific MDO problem representation augmented by a highly parallel process assembly and execution protocol (called Cybermatrix MDO) is defined. This MDO framework is currently being implemented and evaluated on a HPC cluster in conjunction with three disciplinary sub-processes within the DLR project VicToria. These are the above-mentioned gradient-based high-fidelity aeroelastic optimization process governing the aerodynamic wing shape, the optimization process that is in charge of the structural sizing of lifting surfaces, and a process determining the design loads. Based on the two multidisciplinary optimization approaches, with the Cybermatrix MDO framework integrating the FlowSimulator-enabled MDO approach, the two strategies are being analyzed and discussed in order to carve out the potentials and limitations of the two MDO solutions for HPC.

Item URL in elib:https://elib.dlr.de/132921/
Document Type:Conference or Workshop Item (Speech)
Title:Integration of High-Fidelity Analysis Tools in MDO Frameworks for HPC
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Backhaus, Thomasthomas.backhaus (at) dlr.deUNSPECIFIED
Gottfried, Sebastiansebastian.gottfried (at) dlr.deUNSPECIFIED
Ilic, Caslavcaslav.ilic (at) dlr.deUNSPECIFIED
Merle, Andreiandrei.merle (at) dlr.deUNSPECIFIED
Stück, Arthurarthur.stueck (at) dlr.deUNSPECIFIED
Date:June 2019
Journal or Publication Title:AIAA Aviation 2019 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2019-3107
Status:Published
Keywords:MDO frameworks, adjoint, optimization, HPC
Event Title:AIAA Aviation 2019 Forum
Event Location:Dallas, USA
Event Type:international Conference
Event Dates:17.-21. Jun. 2019
Organizer:American Institute for Aeronautics and Astronautics (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 - VicToria, L - Simulation and Validation
Location: Dresden
Institutes and Institutions:Institute of Software Methods for Product Virtualization > Simulation Frameworks
Institute for Aerodynamics and Flow Technology > CASE, BS
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Stück, Arthur
Deposited On:18 Dec 2019 11:24
Last Modified:18 Dec 2019 11:24

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