Extracting flow structures from tracer data |
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Authors: | Judit Schneider Tamás Tél |
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Affiliation: | 1.Department for Physics, University of Potsdam, PF 601553, 14415 Potsdam, Germany e-mail: jotes@lenne.agnld.uni-potsdam.de,DE;2.Institute for Theoretical Physics, E?tv?s University, Pf. 32, H-1538, Budapest, Hungary,HU |
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Abstract: | A method of visualizing structures in closed chaotic flows out of homogenous particle distributions is presented in the example of models of a meandering jet. To this end, the system will be leaked or opened up by defining a region of the flow, so that a particle is considered to be escaped if it leaves this region. By applying this method to an ensemble of nonescaped tracers, we are able to characterize mixing processes by visualizing the converging and stretching filamentations (stable and unstable manifolds) in the flow without using additional mathematical tools. The possibility of applying the algorithm to analyze buoy data, and a comparison with the finite time manifolds are discussed. |
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Keywords: | Meandering jet Chaos Filamentation Stable and unstable manifolds |
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