工艺与制造英文2023
非均质各向异性多孔层界定的平面泊肃叶流动的不稳定性
Instability of a plane Poiseuille flow bounded between inhomogeneous anisotropic porous layers
Supriya Karmakar, Priyanka Shukla
摘要整理
本文对具有各向异性和非均质多孔层的通道中平面泊肃叶流动进行了线性稳定性分析。详细研究了各向异性和非均质渗透率对流动稳定性特征的影响。重点分析了各向异性参数（流向和横向渗透率之比）以及非均质函数对稳定性特征的作用规律。通过建立控制方程和边界条件，采用Orr-Sommerfeld方程求解方法，获得了中性稳定曲线和临界雷诺数。研究结果表明，多孔层的各向异性特性和非均质分布显著影响流动的临界条件和扰动增长率。各向异性参数的增加会改变流动的稳定性边界，而非均质渗透率分布通过改变流体与多孔介质的相互作用强度，进一步调控流动稳定性。该研究为理解多孔介质中复杂流动现象提供了理论基础，对多孔材料在工程应用中的流动控制具有重要参考价值。
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