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Acoustics and dynamics of coaxial interacting vortex rings |
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| Authors: | Karim Shariff Anthony Leonard Norman J. Zabusky Joel H. Ferziger |
| Affiliation: | NASA-Ames Research Center, Moffett Field, CA 94035, USA California Institute of Technology., Pasadena, CA 91125, USA University of Pittsburgh, Pittsburgh, PA 15260, USA Stanford University, Stanford, CA 94305, USA |
| Abstract: | Using a contour dynamics method for inviscid axisymmetric flow we examine the effects of core deformation on the dynamics and acoustic signatures of coaxial interacting vortex rings. Both “passage” and “collision” (head-on) interactions are studied for initially identical vortices. Good correspondence with experiments is obtained. A simple model which retains only the elliptic degree of freedom in the core shape is used to explain some of the calculated features. |
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