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An Improved Integral Equation Method for the Design of Transonic Airfoils and Wings.

Bartelheimer, W. (1995) An Improved Integral Equation Method for the Design of Transonic Airfoils and Wings. In: Proc. 12th AIAA Computational Fluid Dynamics Conference 1995. 12th AIAA Computational Fluid Dynamics Conference 1995.

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Abstract

A design method for transonic airfoils and wings based on the solution of the Euler-/Navier-Stokes equations is described. The applied design strategy is an inverse design method based on the work of Takanashi. The difference between the computed pressure distribution of a given geometry and the prescribed target pressure distribution is iteratively reduced by the solution of an inverse formulated transonic small perturbation equation (TSP-equation). In this design method an analysis code is required, such as the Euler-/Navier-Stokes code CEVCATS developed at DLR. It is shown that Takanashi's method must be modified in order to ensure the convergence of the design in transonic flow. In addition a smoothing algorithm based on Bezier curves is used to obtain a smooth surface. In order to estimate the accuracy and convergence of the design method, a redesign of a known transonic airfoil and wing is.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1995, pages=11,
Title:An Improved Integral Equation Method for the Design of Transonic Airfoils and Wings.
Authors:
AuthorsInstitution or Email of Authors
Bartelheimer, W.UNSPECIFIED
Date:1995
Journal or Publication Title:Proc. 12th AIAA Computational Fluid Dynamics Conference 1995
Status:Published
Keywords:inverse design, transonic flow, residual-correction approach, aerodynamic design
Event Title:12th AIAA Computational Fluid Dynamics Conference 1995
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L TG - Querschnittstechnologien
DLR - Research theme (Project):L - Systems & Cabin
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:05

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