Adaptive panel representation for oblique collision of two vortex rings |
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Authors: | Leon Kaganovskiy |
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Institution: | New College of Florida, 5800 Bayshore Road, Sarasota, FL 34242, USA |
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Abstract: | In this article, we use a hierarchical panel method for representing vortex sheet surface motion in 3D flow to investigate the oblique collision of two vortex rings. The particles representing the sheet are advected by a regularized Biot-Savart integral with smoothed Rosenhead-Moore kernel. The particle velocities are evaluated by an adaptive treecode algorithm based on Taylor expansions in Cartesian coordinates. The method allowed us to consider late stages of a vortex rings collision, producing a funnel region. Vorticity iso-surfaces evolution is also investigated. |
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Keywords: | Vortex rings Hierarchical panel Oblique collision Axial flow Vorticity |
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