Inviscid instabilities in two-dimensional spatially periodic flows |
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Authors: | A. Thess |
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Affiliation: | (1) Forschungszentrum Rossendorf, Postfach 19, O-8051 Dresden, Germany |
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Abstract: | The instability of two-dimensional vortex arrays with hexagonal symmetry is investigated with respect to inviscid perturbations. A numerical treatment in the framework of Floquet theory provides critical parameters for instability onset and the spatial structure of unstable modes which are in agreement with experiments in electromagnetically driven flows conducting fluids. The stability of point vortex lattices is briefly discussed. |
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Keywords: | flow instability incompressible fluids Navier-Stokes equation |
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