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Pore Network Model Of Drying With Kelvin Effect

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Pore network modeling based on digital rock is employed to evaluate the mobility of shale oil in Qingshankou Formation, Songliao Basin, China. Computerized tomography This paper presents a poromechanical model for drying of unsaturated porous media valid for a large range of relative humidity. Using the proper laws of thermodynamics, The time scale of the process is given by vapour diffusion in the empty regions of the network. In this isothermal model, capillary flow is only determined by the spatial distribution of pore size.

PNM was used to model drying for the first time by Prat [21]. His model combined the prin ciples of invasion percolation with a discrete computation of diffu sive vapor transport in the medium.

A Non-isothermal Pore Network Drying Model

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Download scientific diagram | Verification of the SPH evaporation model with capillary and Kelvin effect. (a) Geometry of the domain and dimensionless vapor concentration field. Metzger T, Tsotsas E, Prat M. Pore network models: a powerful tool to study drying at the pore level and understand the influence of structure on drying kinetics.

A pore network model of isothermal drying is presented. The model takes into account the capillary effects, the transport of vapor by diffusion, including Knudsen effect, in the In this work, the molecular dynamics model of moisture diffusion in nanopores of porous media was established and the moisture diffusion process was analyzed by the

Further, the presented model does not take into account the Kelvin effect due to the small pore size or the change of local pore morphology due to precipitation and therefore

Abstract In this paper we present numerical results obtained with a pore-network model for the drying of porous media that accounts for various processes at the pore scale. Evapoporometry is a technique aiming at characterizing the pore size distribution of a porous medium from evaporated mass measurements. In this work, evapoporometry is We demonstrate that the drying patterns, the clustering and connectivity of the pore throats in which salt precipitation occurs, the saturation distribution, and the drying rate are all strongly

Decisive advantages of this approach over the classical method are that the continuity of the mass flux at the drying front and the porous medium surface is ensured and A pore network model of isothermal drying is presented. The model takes into account the capillary effects, the transport of vapor by diffusion, including Knudsen effect, in the gas phase,

Pore network model of drying with Kelvin effect

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Results of a three-dimensional pore network simulation of drying under constant external conditions are reported. It is shown that the pore network drying model capture

Pore-Network Models: A Powerful Tool to Study Drying at the Pore Level and Understand the Influence of Structure on Drying Kinetics Otto-von-Guericke-Universität,

Pore network model of drying with kelvin effect 4. Drying algorithm The drying PNM presented in what follows can be seen as an extension of the model proposed earlier (Prat 1993). A key Proposed drying model partially captures the complex drying behavior of PA. A pore network model (PNM) of drying in a gravity-dominated macroporous material has been Article „Pore network model of drying with Kelvin effect“ Detailed information of the J-GLOBAL is an information service managed by the Japan Science and Technology Agency (hereinafter

We present an experimental micro-model of drying porous media, based on microfluidic cells made of arrays of pillars on a regular grid, and complement these In this paper we present numerical results obtained with a pore-network model for the drying of porous media that accounts for various processes at the pore scale. These include mass Studying explicitly the configuration of the liquid-vapor interface, vapor and liquid movements at pore scale can yield insights not achievable with continuum methods. Thus different

We find that the statistical network models can capture the saturation dependence of permeability and tortuosity but are not able to reproduce velocity statistics of even the

Abstract Early-age carbonation is of great significance for regulating the pore structure of cement paste and improving the durability of materials, but the systematic evaluation of the effect of

Liquid phase distributions in the void space are obtained from drying simulations for a pore network. In a one-way coupling approach, capillary forces are computed over time from the The Kelvin equation describes the change in vapour pressure due to a curved liquid–vapor interface, such as the surface of a droplet. The vapor pressure at a convex curved surface is

Other applications include fluid–fluid displacement, showcasing the strength of microfluidic models to visualize multiphase phenomena in pore networks (Kalde et al. 2022a, A 3-D bond pore network model is presented and used to evaluate the effect of pore size and connectivity on the effective diffusion coefficient in random porous media. The control A pore network model (PNM) of drying in a gravity-dominated macroporous medium, porous asphalt (PA), is developed. The pore and throat size distributions of the

A dynamic pore network model is developed for evaporation in porous media with continuous and discontinuous corner films. The continuous corner films can be interrupted into Understanding drying processes in nanoporous media is of great importance in many technological and industrial situations. To better understand how gas moves through clayey

Abstract The concept of immiscible displacement as an invasion percolation (IP) process driven by heat and mass transfer is used in a pore network model for convective drying of capillary

Irregular pore network models are generated. The isothermal pore network drying model is extended to new irregular structures. Time-dependent capillary forces are computed

Request PDF | Modelling the Drying Shrinkage of Porous Materials by Considering both Capillary and Adsorption Effects | This paper presents a poromechanical model for drying Surface crust investigation showed that the extract surface gradually shrunk and became roughness during drying; crust with a dark color circle appeared on the extract