1995 Volume 64 Issue 10 Pages 3602-3605
Hydrodynamical effects due to Marangoni instability in the Big Wave, which is the wave observed in a quasi 2-dimensional shallow layer of unstirred excitable Belousov-Zhabotinsky (BZ) reaction solution, were investigated experimentally. We found that the layer depth of BZ solution strongly influences the propagating velocity and the shape of the wave. The critical depth dc of BZ solution was found to be dc≈ 1.5, mm. The qualitative feature of the propagation of the wave changed at dc. We also determined the difference between the location of the maximum deformation of the surface and that of a wave front such as the color front.
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