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Development of Deformed CAD Geometries of NASA's Common Research Model for the 6th AIAA CFD Drag Prediction Workshop

Keye, Stefan and Gammon, Mark (2016) Development of Deformed CAD Geometries of NASA's Common Research Model for the 6th AIAA CFD Drag Prediction Workshop. 34th AIAA Applied Aerodynamics Conference, 13.-17.6.2016, Washington, D.C., USA.

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Abstract

A method for modifying the shape of digital geometry representations used in Computer Aided Design (CAD) applications according to experimental pointwise deflection data is described. In the pilot study presented here the method is applied to the CAD geometry of an aircraft wing which is deformed using measured deflections obtained from the associated wing model during a wind tunnel test. The method provides various advantages in Computational Fluid Dynamics (CFD) and other applications. Numerical grids generated on the deformed geometry yield an improved correlation of CFD results to wind tunnel data without the need for aeroelastic computations, which require coupling to a structural model. Additionally, the method is beneficial in aerodynamic optimization, where the optimized shape is usually given in the form of a CFD surface mesh or nodal deflections, which, for further processing or manufacturing purposes, need to be transferred into a CAD geometry description. The paper presents an application to NASA's Common Research Model (CRM) transport aircraft configuration, where deformation measurements from a test campaign in the European Transonic Wind Tunnel (ETW) are processed to provide deformed CAD geometries for use in the forthcoming 6th AIAA CFD Drag Prediction Workshop (DPW-6).

Item URL in elib:https://elib.dlr.de/105780/
Document Type:Conference or Workshop Item (Speech)
Title:Development of Deformed CAD Geometries of NASA's Common Research Model for the 6th AIAA CFD Drag Prediction Workshop
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Keye, StefanStefan.Keye (at) dlr.deUNSPECIFIED
Gammon, Markmrg (at) transcendata.comUNSPECIFIED
Date:June 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeroelasticity, Computational Fluid Dynamics, Computer Aided Design, Deformation.
Event Title:34th AIAA Applied Aerodynamics Conference
Event Location:Washington, D.C., USA
Event Type:international Conference
Event Dates:13.-17.6.2016
Organizer:American Institute of Aeronautics and Astronautics
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
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Keye, Dr.(PH.D.) Stefan
Deposited On:22 Aug 2016 08:49
Last Modified:22 Aug 2016 08:49

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