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首页> 外文期刊>Bulletin of the American Physical Society >APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Effects of advection on the Belousov-Zhabotinsky reaction: standing excitation waves in a quasi-1D system
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APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Effects of advection on the Belousov-Zhabotinsky reaction: standing excitation waves in a quasi-1D system

机译：APS -2017年APS俄亥俄地区分部年度秋季会议-事件-对流对Belousov-Zhabotinsky反应的影响：准一维系统中的驻波

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Reaction-diffusion (RD) waves are autocatalytic reaction zones that propagate via molecular diffusion without mass transport. They arise from the interplay of nonlinear reaction kinetics of an activator and an inhibitor species and diffusion-mediated spatial coupling (e.g., action potentials in nerves, forest fires, or stadium waves). Introducing fluid flow in a liquid chemical RD system has a huge effect on the propagation behavior of the wave. By using quasi-1D systems, such as glass capillary tubes, it is possible to create `standing waves' by advecting the liquid solution opposite to the direction of wave propagation. In our experiments, we used the Belousov-Zhabotinsky reaction as the liquid RD system. The solution was restrained in capillaries, with inner diameters of 0.58 mm. This enabled us to study a quasi-1D reaction-diffusion-advection system. After initiating waves on the open end of the capillary, the reaction solution was advected in the opposite direction. The effect of flow rate on the propagation speed and front shape was investigated. Stationary chemical waves were observed under equal-velocity conditions.
机译：反应扩散（RD）波是自催化反应区，通过分子扩散传播而没有质量传输。它们起因于活化剂和抑制剂物种的非线性反应动力学之间的相互作用以及扩散介导的空间耦合（例如神经，森林火灾或体育场波中的动作电位）。在液体化学RD系统中引入流体流会对波的传播行为产生巨大影响。通过使用准一维系统（例如玻璃毛细管），可以通过向与波传播方向相反的方向平移液体溶液来产生“驻波”。在我们的实验中，我们使用Belousov-Zhabotinsky反应作为液体RD系统。溶液被限制在毛细管中，内径为0.58 mm。这使我们能够研究准一维反应扩散对流系统。在毛细管的开口端引发波后，将反应溶液向相反方向平移。研究了流速对传播速度和前部形状的影响。在等速条件下观察到固定化学波。

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