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Self-organization of decaying quasi-two-dimensional turbulence in stratified fluid in rectangular containers. (English) Zbl 1069.76002
The goal is to gain a deeper understanding of cell pattern formation in decaying quasi-two-dimensional turbulence in rectangular containers, as was observed in rake-forced experiments. Since no symmetry or large-scale motion is introduced to the flow initially, the evolution towards a final cell pattern in these experiments is less clear and predictable than in jet-forced flow in a stratified fluid or in spin-up experiments. In particular, the authors focus on the role of angular momentum of the initial flow field, which can be controlled in the experiments. The numerically obtained final states agree with experimental observations.

MSC:
76-05 Experimental work for problems pertaining to fluid mechanics
76F45 Stratification effects in turbulence
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