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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Experimental and numerical investigation of fluid flow hydrodynamics in porous media: Characterization of pre-Darcy, Darcy and non-Darcy flow regimes
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Experimental and numerical investigation of fluid flow hydrodynamics in porous media: Characterization of pre-Darcy, Darcy and non-Darcy flow regimes

机译：多孔介质中流体流动流体力学的实验和数值研究：达西前，达西和非达西流型的表征

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In the present study, incompressible single phase fluid percolation through different types (homogeneous and mixed isotropic) of porous media was investigated experimentally. The functional relation of pressure gradient with velocity was presented on the basis of dimensional analysis in terms of friction factor and Reynolds number based on different characteristic length (i.e. particle diameter and permeability of porous media). The experimental pressure drop data were analyzed by rigorous non-linear regression analysis. The different flow regimes exist in porous media flow were characterized and demarked according to the analysis of solid-fluid interaction, and the generation of the pressure and the viscous drags in terms of different types of Reynolds numbers Re-D, Re-p, Re root((K) over bar). Three significant flow regimes (pre-Darcy, Darcy and non-Darcy Forchheimer flow regime) with two transition regimes (transition to Darcy and weak inertia flow regime) were observed. In addition, numerical modeling and simulations were also performed to understand the relevant micro-flow phenomena localized in the pore domain and simulation results were compared with experimental data. (C) 2016 Elsevier B.V. All rights reserved.
机译：在本研究中，通过实验研究了通过不同类型（均质和混合各向同性）的多孔介质的不可压缩单相流体渗透。在尺寸分析的基础上，根据不同的特征长度（即多孔介质的粒径和渗透率），根据摩擦系数和雷诺数，提出了压力梯度与速度的函数关系。通过严格的非线性回归分析对实验压降数据进行了分析。通过对固液相互作用的分析，对多孔介质中存在的不同流态进行了表征和标记，并根据不同类型的雷诺数Re-D，Re-p，Re对压力和粘性阻力的产生进行了描述。 root（（K）over bar）。观察到三个重要的流动状态（达西前，达西和非达西福希海默流动状态）以及两个过渡状态（向达西过渡和弱惯性流动状态）。此外，还进行了数值建模和模拟，以了解位于孔域的相关微流现象，并将模拟结果与实验数据进行了比较。 （C）2016 Elsevier B.V.保留所有权利。

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