Volumetric evolution of elastic turbulence in porous media
Volumetric evolution of elastic turbulence in porous media
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DOI：
10.1017/jfm.2022.836
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发表时间：
2022-10-26
影响因子：
3.7
通讯作者：
Haward, Simon J.
中科院分区：
文献类型：
--
作者：
Carlson, Daniel W.;Toda-Peters, Kazumi;Haward, Simon J.
粘弹性流动的不稳定性，这是被迫由弹性效应，而不是惯性，可以驱动到一个称为弹性湍流（ET）表现为强烈的速度波动与代数衰减的频谱和混合增加的混沌状态。我们报告的第一个时空完整的描述ET考虑一个新的三维有序多孔介质内的广泛的体积，重建流动在微米的特征长度尺度（雷诺数
Viscoelastic flow instability, which is compelled by elastic effects rather than inertia, can be driven to a chaotic state termed elastic turbulence (ET) manifested as strong velocity fluctuations with an algebraic decay in the frequency spectrum and increased mixing. We report the first spatiotemporally complete description of ET by considering a broad volume within a novel three-dimensional ordered porous medium, reconstructing flow at a micrometre characteristic length scale (Reynolds numbers