This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Adjoint Method for Aerodynamic Shape Improvement
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2012 by SAE International in United States
Annotation ability available
The main objective of this work is to demonstrate the merits of the Adjoint method to provide comprehensive information for shape sensitivities and design directions to achieve low drag vehicle shapes. The adjoint method is applied to a simple 2D airfoil and a 3D vehicle shape. The discrete Adjoint equations in the flow solvers are used to investigate further potential shape improvements of the low drag vehicle shapes. The low drag vehicle used in this study was designed earlier using the conventional approach (i.e., extensive use of wind tunnel testing). The goal is to use the already low drag vehicle shape and reduce its drag even further using the adjoint methodology without using the time-consuming and the high cost of wind tunnel testing. In addition, the present study is intended to compare the results with the other computational techniques such as surface pressure gradients method.
CitationHan, T., Kaushik, S., Gin, R., and Bot, E., "Adjoint Method for Aerodynamic Shape Improvement," SAE Technical Paper 2012-01-0167, 2012, https://doi.org/10.4271/2012-01-0167.
- Pironneau, O. 1984 “Optimal Shape design for Elliptic Systems” Springer-Verlag New York
- Jameson, A. 1988 “Aerodynamic design via control theory” Journal of Scientific Computing 3 3 233 260
- Sloane, C. Zemke, B. Claypole, G. Laws, L. “Rationale for Technology Selections in GM's PNGV Precept Concept Car based on Systems Analysis,” SAE Technical Paper 2000-01-1567 2000 10.4271/2000-01-1567
- Han, T. Kim, Y. “Aerodynamic Shape Improvement Based on Surface Pressure Gradients in the Stream-wise and the Transverse Directions,” SAE Technical Paper 2010-01-0511 2010 10.4271/2010-01-0511
- PAM-FLOW, a CFD software product for industrial design activities ESI group France
- EnSight Gold 9.1.0, Commercial CFD post-processing code Computational Engineering International, Inc. Jameson, A. “Aerodynamic Design via Control Theory” Journal of Scientific Computing 3 3 1988
- Jameson, A. “Aerodynamic Design via Control Theory” Journal of Scientific Computing 3 3 1988
- De Villiers, E. Othmer Weller, C. “Implementation of a continuous Adjoint for topology optimization of ducted flows” AIAA Paper 2007-3947
- De Villiers, E. Petropoulou “An efficient Adjoint-based method applied on vehicle aerodynamic optimization” OpenFOAM Conference 2007
- Hill, D.C. “Adjoint systems and their role in the receptivity problem for boundary layers” Journal of Fluid Mechanics 292 183 204 1995
- Han, T. Hill, C. Jindal, S. “Adjoint Method for Aerodynamic Shape Improvement in Comparison with Surface Pressure Gradient Method,” SAE Int. J. of Passeng. Cars- Mech. Syst. 4 1 100 107 2011 10.4271/2011-01-0151