Abstract
This contribution describes a combined experimental-numerical study of decaying quasi-2D turbulent flows on a rectangular domain with no-slip boundaries. While decaying, the flow is found to organise in a domain-filling pattern of counter-rotating cells.
Advection of filaments of viscously generated wall vorticity into the interior results in a continuing perturbation of the cellular pattern. The time dependence thus introduced provides the essential mechanism for chaotic advection: passive tracers may move from one cell to a neighbouring one, all the way along the array.
Original language | English |
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Pages (from-to) | 149-168 |
Number of pages | 20 |
Journal | Applied Scientific Research |
Volume | 58 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 1998 |