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The Effects of Hydrophobicity and Drainage Velocity on Water Retention Behaviour in Porous Media: A Computational Study

机译:疏水性和排水速度对多孔介质水保留行为的影响:计算研究

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The present study investigates the water retention behavior in two different types of porous media, i.e., porous metal - a type of metallic foam and ideal geometry. The present study uses computational fluid dynamics (CFD) to model a decreasing water level in a reservoir consisting of a stationary porous medium beneath the water surface at initial stage. It mimics the setup of dynamics dip-testing which measures the amount of retained water for different types of fins-tubes heat exchangers. The study varies parameters like static contact angle (θ_s) and drainage velocity (U). The literature review summarizes the unique water retention behaviors for different types of heat exchangers and the findings of the present study. Furthermore, the present study proposed new parameters for evaluating the structural variations in porous metal that explains the water saturation distribution in detail. The evaluation method could provide an insightful idea for performing the quality control check on metallic foam.
机译:本研究研究了两种不同类型多孔介质中的水保留行为,即多孔金属 - 一种金属泡沫和理想的几何形状。本研究采用计算流体动力学(CFD)来模拟由在初始阶段的水表面下方的固定多孔介质组成的储层中的降低水位。它模仿动态DIP测试的设置,测量不同类型的翅片管热交换器的保留水量。该研究改变了静态接触角(θ_S)和排水速度(U)的参数。文献综述总结了不同类型的热交换器的独特保险行为和本研究的结果。此外,本研究提出了用于评估多孔金属中的结构变化的新参数,其详细解释了水饱和度分布。评估方法可以提供对金属泡沫进行质量控制检查的富有识别理念。

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