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Shape Parametrization Using Freeform Deformation

Ronzheimer, A. (2005) Shape Parametrization Using Freeform Deformation. In: MEGAFLOW - Numerical Flow Simulation for Aircraft Design, 89, pp. 211-222. Springer Verlag. Closing Presentation DLR Project MEGAFLOW, Braunschweig (de), 10.-11.12.2002. ISBN 3-540-24383-6.

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Abstract

Shape parametrization has been identified as an import issue in aerodynamic design optimization based on high-fidelity CFD-methods. For given shapes, which are available as CAD-models, post-parametrization method, based on freeform deformation, has been established to simplify and to automate the generation of geometrical variants to be used for CFD analyses. To create the necessary deformation lattices, structured grid generation techniques of a grid generation system, developed at DLR, are utilized. As this grid generation system has the salient feature to store and to replay a sequence of processes with different parameter settings, modifications of shapes, given by polygonal curves and surfaces can be performed instantly. The present freeform deformation method has reached a state, where it can be integrated into design loops to handle a variety of shape optimization tasks. In two examples the applicability of the method for aerodynamic wing design and detailed design of a wing tip is demonstrated.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Shape Parametrization Using Freeform Deformation
Authors:
AuthorsInstitution or Email of Authors
Ronzheimer, A.UNSPECIFIED
Date:2005
Journal or Publication Title:MEGAFLOW - Numerical Flow Simulation for Aircraft Design
Volume:89
Page Range:pp. 211-222
Editors:
EditorsEmail
Kroll, N.UNSPECIFIED
Faßbender, J.K.UNSPECIFIED
Publisher:Springer Verlag
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM)
ISBN:3-540-24383-6
Status:Published
Keywords:MEGAFLOW, CFD
Event Title:Closing Presentation DLR Project MEGAFLOW, Braunschweig (de), 10.-11.12.2002
Organizer:DLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L - Concepts & Integration
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:52

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