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首页> 外文会议>Proceedings of the 2011 international conference on advances in construction machinery and vehicle engineering >Studies on the Inertial Effect in Fluid Transport Using a Simplified Porous Media Model
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Studies on the Inertial Effect in Fluid Transport Using a Simplified Porous Media Model

机译：用简化多孔介质模型研究流体传输中的惯性效应

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摘要

Flows in porous media are important in many fields of science and engineering. In this work, the inertial effect on fluid transport is investigated both experimentally and numerically by employing a simplified ordered porous medium model. Transition from linear to nonlinear behaviour is observed by using a friction factor-Forchheimer number correlation. The Darcy law permeability k and the Forchheimer inertial parameter β are evaluated based on the experimental data. After validation at macroscopic level, three-dimensional numerical simulations are further conducted to elucidate the fluid-solid interaction patterns and the localized microscopic flow features. It is found that the reduced flow-section caused by the dissipative recirculation zones around flow separation region play a significant role in the nonlinear behaviour of porous media flow. The velocity iso-surface shows that the high-velocity flow localized in a narrow tube dominates the bulk characteristics of the fluid transport.
机译：在许多科学和工程领域中，多孔介质中的流动都很重要。在这项工作中，通过采用简化的有序多孔介质模型，通过实验和数值研究了惯性对流体传输的影响。通过使用摩擦系数-Forchheimer数相关性观察到了从线性行为到非线性行为的转变。基于实验数据评估达西定律渗透率k和Forchheimer惯性参数β。在宏观水平上验证之后，进一步进行三维数值模拟，以阐明流固耦合模式和局部微观流动特征。结果发现，由流动分离区周围的耗散性回流区引起的流动截面积的减小在多孔介质流动的非线性行为中起着重要的作用。速度等值面表明，局域在细管中的高速流动主导着流体传输的整体特征。

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