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CFD-based ROMs for aeronautical applications

Ripepi, M. and Karcher, N. and Franz, Thomas and Görtz, S. (2016) CFD-based ROMs for aeronautical applications. Mini-workshop COST EU-MORNET: Reduced order methods in computational fluid dynamics: state of the art and perspectives, 22-23 Feb 2016, Trieste, Italy.

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Abstract

The advent and development of large-scale high-fidelity computational fluid dynamics (CFD) in aircraft design is requiring, more and more, procedures and techniques aimed at reducing its computational cost in order to afford accurate but fast simulations of, e.g., the aerodynamic loads. The adoption of reduced order modeling techniques in CFD represents a promising approach to achieve this goal. Several methods have been developed to obtain reduced order models (ROMs) for the prediction of steady and unsteady aerodynamic flows using low-dimensional linear subspaces as well as nonlinear manifolds, whose performances may be further improved by applying hyper-reduction procedures. In this talk, it is presented the activity done at the German Aerospace Center (DLR) in the context of model order reduction and surrogate modeling for multidisciplinary applications, design and optimization. Different examples are shown to demonstrate the use of the ROMs in aeronautical applications, as for fusing experimental and CFD data, accelerating CFD computations, obtaining a fast loads prediction across the flight envelope, or accelerating multidisciplinary optimizations. The ROMs approches are demonstrated for airfoils, wings and aircraft in subsonic and transonic flows.

Item URL in elib:https://elib.dlr.de/105982/
Document Type:Conference or Workshop Item (Speech)
Title:CFD-based ROMs for aeronautical applications
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ripepi, M.matteo.ripepi (at) dlr.deUNSPECIFIED
Karcher, N.Niklas.Karcher (at) dlr.deUNSPECIFIED
Franz, ThomasThomas.Franz (at) dlr.deUNSPECIFIED
Görtz, S.Stefan.Görtz (at) dlr.deUNSPECIFIED
Date:22 February 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:model reduction, surrogate modelling, proper orthogonal decomposition, isomap, optimization
Event Title:Mini-workshop COST EU-MORNET: Reduced order methods in computational fluid dynamics: state of the art and perspectives
Event Location:Trieste, Italy
Event Type:Workshop
Event Dates:22-23 Feb 2016
Organizer:International School for Advanced Studies (Italian: Scuola Internazionale Superiore di Studi Avanzati, SISSA)
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 - Simulation and Validation, L - Flexible Aircraft (old), L - Concepts and Integration
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Ripepi, Matteo
Deposited On:07 Sep 2016 08:57
Last Modified:14 Jun 2019 08:58

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