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Issue No.04 - July-August (1998 vol.18)
pp: 70-74
ABSTRACT
An eigenvector method for vortex identification was applied to recent numerical and experimental studies in external flow aerodynamics. This article shows that it is an effective way to extract and visualize features such as vortex cores, spiral vortex breakdowns, and vortex bursts. The algorithm has also been incorporated in a finite element flow solver to guide an automatic mesh refinement program. Results show that this approach can resolve small-scale vortical structures in helicopter rotor simulations that are not captured on coarse meshes.
CITATION
David N. Kenwright, Robert Haimes, "Automatic Vortex Core Detection", IEEE Computer Graphics and Applications, vol.18, no. 4, pp. 70-74, July-August 1998, doi:10.1109/38.689668
REFERENCES
1. D. Sujudi and R. Haimes, Identification of Swirling Flow in 3D Vector Fields, AIAA-95-1715, American Institute of Aeronautics and Astronautics, Washington, DC, 1995.
2. D.C. Banks and B.A. Singer, A Predictor-Corrector Technique for Visualizing Unsteady Flow IEEE Trans. Visualization and Computer Graphics, vol. 1, no. 2, pp. 151-163, June 1995.
3. J. Helman and L. Hesselink, "Representation and Display of Vector Field Topology in Fluid Flow Data Sets," Computers, vol. 22, no. 8, pp. 27-36, Aug. 1989. Also appears in Visualization in Scientific Computing, G.M. Nielson and B. Shriver, eds. Companion video tape available from IEEE CS Press.
4. Y. Levy and A. Seginer, "Graphical Representation of Three-Dimensional Vortical Flows by Means of Helicity Density and Normalized Helicity," AIAA-88-2598, AIAA 6th Applied Aerodynamics Conf., American Institute of Aeronautics and Astronautics, Reston, Va., 1988.
5. M. Roth and R. Peikert, "Flow Visualization for Turbomachinery Design," Proc. Visualization 96, IEEE Computer Society Press, Los Alamitos, CA, 1996, pp. 381-384.
6. L.A. Yates and G.T. Chapman, Streamlines, Vortex Lines, and Vortices, AIAA-91-0731, American Institute of Aeronautics and Astronautics, Washington, DC, 1991.
7. M. Dindar et al., "Effect of Tip Vortex Resolution on UH-60A Rotor-Blade Hover Performance Calculations," 54th AHS Annual Forum and Technology Display, American Helicopter Society, Alexandria, Va., 1998.
8. D.N. Kenwright and R. Haimes, Vortex Identification Applications in Aerodynamics: A Case Study Proc. IEEE Visualization 1997, pp. 413-416, 1997.
9. M.S. Chong, A.E. Perry, and B.J. Cantwell, "A General Classification of Three-Dimensional Flow Fields," Phys. Fluids A, Vol. 2, No. 5, 1990, pp. 765-777.
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