The dynamics of open precipitation tubes.
The dynamics of open precipitation tubes.
复制标题
开放式降水管的动力学。
DOI：
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发表时间：
2014
影响因子：
4.4
通讯作者：
J. Pantaleone
中科院分区：
文献类型：
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作者：
V. Kaminker;J. Maselko;J. Pantaleone
当流动的流体通过化学或物理沉淀形成通道时，就会形成管状结构。这些模式在自然界中是常见的，然而，很少有定量的研究，他们的形成。在这里，我们报告测量的半径，长度和内部压力，作为时间和流速的函数，沉淀管生长在化学花园。使用这些测量，我们开发的模型如何单管增长，以及如何多个管相互作用。特别地，当多个管从同一来源生长时，它们竞争资源;短/宽管具有较小的流动阻力，因此消耗更多的资源，“杀死”长/窄管的生长。这些管的相互作用描述的一个方程类似于一个不稳定的逻辑方程。
When a flowing fluid is channeled by chemical or physical precipitation, then tubular structures form. These patterns are common in nature, however, there have been few quantitative studies of their formation. Here, we report measurements of the radius, length, and internal pressure, as functions of time and flow rate, for precipitation tubes growing in chemical gardens. Using these measurements we develop models for how single tubes grow and also for how multiple tubes interact with each other. In particular, when multiple tubes grow from the same source they compete for resources; short/wide tubes have less resistance to flow, and so consume more of the resources, "killing" the growth of long/narrow tubes. These tube interactions are described by an equation similar to an unstable logistic equation.