Fontane, Jérôme and Joly, Laurent and Reinaud, Jean Fractal Kelvin-Helmholtz break-ups. (2007) In: American Physical Society/Division Fluid Dynamics Annual Meeting, 18 November 2007 - 20 November 2007 (Salt Lake City, United States).
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(Document in English)
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Abstract
We carry out numerical simulations of the temporally-evolving infinite-Schmidt number mixing-layer between density-contrasted streams (ρblack/ρwhite = 3). The primary KH-billow is seeded with an eigen-perturbation at t=18. As hinted by Reinaud, Joly and Chassaing (Phys. Fluids 2000), a secondary instability develops on the light side of the main structure. If seeded earlier at t=13, the secondary instability develops on a longer wavelength. The larger central secondary billow break-ups in ternary roll-ups due to the same mechanism as the previous generation. The growing demand for spatial resolution requires that the last stages be resolved on a 10 000 X 10 000 grid.
| Item Type: | Conference or Workshop Item (Poster) |
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| Audience (conference): | International conference without published proceedings |
| Uncontrolled Keywords: | |
| Institution: | Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE) Other partners > University of St Andrews (UNITED KINGDOM) |
| Laboratory name: | |
| Statistics: | download |
| Deposited By: | Laurent JOLY |
| Deposited On: | 12 Dec 2008 10:45 |
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