Is Chaotic Advection Inherent to Porous Media Flow?
Is Chaotic Advection Inherent to Porous Media Flow?
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DOI：
10.1103/physrevlett.111.174101
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发表时间：
2013-10-23
影响因子：
8.6
通讯作者：
Trefry, M. G.
中科院分区：
文献类型：
--
作者：
Lester, D. R.;Metcalfe, G.;Trefry, M. G.
我们发现，混沌平流在所有类型的多孔介质中流动是固有的，从颗粒和填充介质到破裂和开放的网络。所有多孔介质固有的基本拓扑复杂性导致了稳定流动条件下的混沌流动动力学，其中流体变形到停滞点局部提供了与面包师贴图类似的3D流体力学。混沌平流的普遍存在对于描述多孔介质中的输运、混合、化学反应和生物活性具有重要意义。
We show that chaotic advection is inherent to flow through all types of porous media, from granular and packed media to fractured and open networks. The basic topological complexity inherent to all porous media gives rise to chaotic flow dynamics under steady flow conditions, where fluid deformation local to stagnation points imparts a 3D fluid mechanical analog of the baker's map. The ubiquitous nature of chaotic advection has significant implications for the description of transport, mixing, chemical reaction and biological activity in porous media.