Scale transition: Pore network study of how pore structure affects the macroscopic parameters of the continuum model for drying

Xiang, Lu; Tsotsas, Evangelos; Kharaghani, Abdolreza

doi:10.1080/07373937.2023.2193974

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…However, the model's reliability was not verified for capillary action when only larger particles were used in the experiments. Lu et al [25] analyzed how the microscopic pore structure affects the macroscopic parameters within Whitaker's model using a pore network model. Their analysis showed that the internal pore structure affects the moisture transfer capacity at the surface and in the two-phase region of the medium, which is mainly related to the average size of the throat channel in the pore network model and is independent of the standard deviation of the throat channel.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Analysis of the Thermostatic Drying Process in Wetted Porous Sand Beds with Different Pore Sizes

Su,

Cao,

Deng

2024

Processes

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The drying kinetics of porous media are crucial for controlling the drying process, which is a vital component in many processes. A mathematical model of the drying process in a granular bed was developed using Whitaker’s model, and its accuracy was verified through experimental results. The results indicated that the three stages of porous media drying are closely linked to the heat flow to the media and the latent heat of evaporation required by the liquid water inside it. Moreover, as the influence of gravity weakens and the capillary force strengthens, specifically due to the gradual decrease in the pore size of the bed, significant differences in the drying kinetics of the bed are observed, particularly in the third stage of drying, which is most affected. The onset of saturation in the third stage of bed drying varies with the pore size of the particles, with smaller pore sizes exhibiting an earlier onset. Additionally, the temperature change in this stage demonstrates the occurrence of secondary warming as the pore size decreases.

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Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Analysis of the Thermostatic Drying Process in Wetted Porous Sand Beds with Different Pore Sizes

Su,

Cao,

Deng

2024

Processes

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Multi-scale pore network modelling to evaluate connectivity in ceramic composites

Schroeder,

Burch,

Perez

2024

Micron

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A one-field fluid/meso-structure coupling approach for multiscale transport in heterogeneous porous media

Ou,

Xue,

Wan

et al. 2024

Physics of Fluids

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Modeling transport phenomena within heterogeneous porous media poses considerable challenges, particularly on account of the complexity of the involved geometries combined with nonlinear transport interactions. In the present study, a novel one-field modeling approach for multiscale fluid–solid interactions is proposed that does not need any a priori information on permeability. This approach implicitly considers the existence of multiscale structures through a penalization function that encompasses merely one single effective parameter. The definition, determination, as well as the response of the effective parameter to influencing factors are elaborated in detail. It is demonstrated that this approach is effective in representing properly the heterogeneity of solids. The method has been successfully applied to both nonlinear porous media flows and Darcian transport problems, exhibiting comparable accuracy but substantial computational savings as opposed to pore-scale simulations. It leads to more accurate interphase mass transfer predictions and lower computational cost in comparison with the Darcy–Brinkmann–Stokes approach. Overall, this method appears to be highly effective in forecasting realistic, industrial-scale porous media transport problems.

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Scale transition: Pore network study of how pore structure affects the macroscopic parameters of the continuum model for drying

Cited by 5 publications

References 26 publications

Experimental and Theoretical Analysis of the Thermostatic Drying Process in Wetted Porous Sand Beds with Different Pore Sizes

Experimental and Theoretical Analysis of the Thermostatic Drying Process in Wetted Porous Sand Beds with Different Pore Sizes

Multi-scale pore network modelling to evaluate connectivity in ceramic composites

A one-field fluid/meso-structure coupling approach for multiscale transport in heterogeneous porous media

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