Flow resistance study of porus media based on five-sphere model

IF 2.5 4区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Porous Media Pub Date : 2024-08-01 DOI:10.1615/jpormedia.2024049750

Hu Junlei, Guan Chong, Zheng Kuncan, Shi Qiangjun, Han Fulin, Chen Zhaodong

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Abstract

Flow resistance in porous media has been a challenging research topic in engineering and flow mechanics, plays an crucial role in industrial production and daily life. This paper presents the innovative five-sphere model by employing the capillary flow, pore-throat, flowing around models. The flow resistance of the five-sphere model incorporates capillary flow resistance, local resistance caused by the changes of pore-throat, and flowing around resistance of fluids around the filling material, which is summarized to derive a formula for the flow resistance of porous media without empirical parameters. Based on 42 sets of experimental data obtained from literature, this paper compares and validates the proposed model. When ,the five-sphere model is compared with the Carman equation, Ergun and WuJinsui equation; when , the comparison made with the Ergun and WuJinsui equation. Out of the 22 sets of data with deviations in the range of 0-30% of the five-sphere model equation for particles with an average diameter of 0.2 mm up to 56.8 mm; porosity ranging from 0.32 to 0.4174, superficial velocities ranging from 0.000038 m/s to 0.5342 m/s; and Reynolds number ranging from 0.124 to 10730. By further analysis of viscous and inertial resistance, it is found that viscous resistance losses from capillary flow and flowing around occupy the main part; when Rep < 30; inertial resistance losses from diameter change and flowing around occupy the main part when Rep > 150. This further confirms that flowing around occupies an important position in the flow resistance of porous media.

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基于五球模型的多孔介质流动阻力研究

多孔介质中的流动阻力一直是工程和流动力学领域的一个挑战性研究课题，在工业生产和日常生活中发挥着至关重要的作用。本文通过采用毛细管流、孔喉流、环绕流模型，提出了创新的五球模型。五球模型的流动阻力包括毛细管流动阻力、孔喉变化引起的局部阻力以及流体在填充材料周围的绕流阻力，总结得出多孔介质的流动阻力公式，无需经验参数。本文基于从文献中获得的 42 组实验数据，对所提出的模型进行了比较和验证。当五面体模型与 Carman 方程、Ergun 和 WuJinsui 方程进行比较时；当五面体模型与 Ergun 和 WuJinsui 方程进行比较时；当五面体模型与 Carman 方程、Ergun 和 WuJinsui 方程进行比较时。在平均直径为 0.2 毫米至 56.8 毫米的颗粒、孔隙率范围为 0.32 至 0.4174、表面速度范围为 0.000038 米/秒至 0.5342 米/秒、雷诺数范围为 0.124 至 10730 的 22 组数据中，五球模型方程的偏差范围为 0-30%。通过对粘滞阻力和惯性阻力的进一步分析，发现当 Rep < 30 时，毛细流动和绕流产生的粘滞阻力损失占主要部分；当 Rep > 150 时，直径变化和绕流产生的惯性阻力损失占主要部分。这进一步证实了绕流在多孔介质流动阻力中占据重要地位。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Porous Media 工程技术-工程：机械

CiteScore

3.50

自引率

8.70%

发文量

审稿时长

12.5 months

期刊介绍： The Journal of Porous Media publishes original full-length research articles (and technical notes) in a wide variety of areas related to porous media studies, such as mathematical modeling, numerical and experimental techniques, industrial and environmental heat and mass transfer, conduction, convection, radiation, particle transport and capillary effects, reactive flows, deformable porous media, biomedical applications, and mechanics of the porous substrate. Emphasis will be given to manuscripts that present novel findings pertinent to these areas. The journal will also consider publication of state-of-the-art reviews. Manuscripts applying known methods to previously solved problems or providing results in the absence of scientific motivation or application will not be accepted. Submitted articles should contribute to the understanding of specific scientific problems or to solution techniques that are useful in applications. Papers that link theory with computational practice to provide insight into the processes are welcome.