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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Pattern Formation Fueled by Dissipation of Chemical Energy: Conclusive Evidence for the Formation of a Convective Torus
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Pattern Formation Fueled by Dissipation of Chemical Energy: Conclusive Evidence for the Formation of a Convective Torus

机译：化学能耗散推动的模式形成：对流环面形成的确凿证据

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摘要

An exothermic, autocatalytic chemical reaction can produce a lateral instability which can result in a rapidly moving wave of chemical reactivity. The propagating wave is strongly influenced by thermocapillary effects. At high Marangoni numbers the traveling wave has shown irregular patterning and spatiotemporal irregularity that is aligned in the direction of wave propagation. At lower Marangoni numbers effective coupling occurs between thermocapilary and thermogravitational Rayleigh-Benard type effects. This coupling has produced powerful thermal plumes just behind the leading wave front as well as a series of concentric patterning that represent "transient" Turing patterns. Observations of these effects had led to the conjecture that the wave forms a series of convective tori as it propagates. In this paper recent experimental data are produced that clearly show the dynamic formation of convective tori at the wave front.
机译：放热的自催化化学反应会产生侧向不稳定性，从而可能导致化学反应性快速波动。传播波受到热毛细作用的强烈影响。在高Marangoni数下，行波显示出不规则的图案和时空不规则，并沿波传播方向排列。在较低的Marangoni数下，热毛细管效应和热引力瑞利-贝纳德效应之间会发生有效耦合。这种耦合在前导波前沿之后产生了强大的热羽流，以及代表“瞬态”图灵图案的一系列同心图案。对这些影响的观察结果导致人们猜测，波在传播时会形成一系列对流托里。在本文中，产生的最新实验数据清楚地显示了波前对流托里的动态形成。

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