Numerical Wake Visualization for Airfoils Undergoing Forced and Aeroelastic Motions
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Authors
Jones, K.D.
Center, K.B.
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Date of Issue
1996
Date
1996
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Abstract
A virtual wind tunnel is developed by combining a fast, time-stepping flow solver with an interactive animation interface. Inviscid, incompressible flow solutions are provided by an unsteady, potential-flow code with arbitrary airfoils undergoing forced or aeroelastic motions. Aeroelastic response is predicted by a two-degree-of-freedom spring/mass system modeling the structural dynamics of a flexible wing. A boundary layer code may be used to predict viscous flow effects such as transition and the onset of flow separation. The aeroelastic algorithm is coupled with an interactive graphical animation front end, enabling visualization and measurement of the unsteady wake and surrounding flow field. To further enhance the virtual wind tunnel look and feel, an assortment of tools is provided to mimic smoke/dye-injection, wake-vorticity tagging and flow anemometry. The complete package is used both as a research and an instructional tool, providing insight into the complex, unsteady vortical structures behind moving airfoils. Solutions compare well with experimental data while the animation allows a more thorough investigation of the development and evolution of the wake structures in time.
Type
Conference Paper
Description
AIAA Paper No. 96-0055, 34th AIAA Aerospace Sciences Meeting, Reno, Nevada, Jan. 1996.
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Department of Mechanical and Aerospace Engineering
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Citation
Jones, K.D. and Center, K.B., "Numerical Wake Visualization for Airfoils Undergoing Forced and Aeroelastic Motions," AIAA Paper No. 96-0055, 34th AIAA Aerospace Sciences Meeting, Reno, Nevada, Jan. 1996.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.