Journal of Porous Media最新文献

Multi‑scale Experimental Investigations on the Deterioration Mechanism of Sandstone after high-temperature treatment 砂岩高温处理后劣化机理的多尺度实验研究

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-09-01 DOI: 10.1615/jpormedia.2024052733

Na Zhang, Yu Song, Yuxin Ren, Piaopiao Zhang, Ziyun Zhang, Shuaidong Wang

{"title":"Multi‑scale Experimental Investigations on the Deterioration Mechanism of Sandstone after high-temperature treatment","authors":"Na Zhang, Yu Song, Yuxin Ren, Piaopiao Zhang, Ziyun Zhang, Shuaidong Wang","doi":"10.1615/jpormedia.2024052733","DOIUrl":"https://doi.org/10.1615/jpormedia.2024052733","url":null,"abstract":"ABSTRACT: A significant aspect influencing engineering stability in deep engineering is temperature. In order to explore the influence of high temperature on sandstone, This study used experimental samples of sandstone from Shaanxi, China. Sandstone samples were subjected to varying temperature gradients (25℃, 100℃, 300℃, 500℃ and 700℃) for Uniaxial Compressive Strength (UCS), Acoustic Emission (AE) monitoring, and Nuclear Magnetic Resonance (NMR) experiments. The resulting mechanical parameters and pore diameter distributions of the sandstone under various temperatures were compared and analyzed. The results showed that: Peak strain and peak stress of sandstone samples both greatly rise and decrease with increasing heating temperature. The degree of elastic modulus and peak stress degradation is also more pronounced at higher temperatures. The brittle-ductile transition occurs at about occurs between 500°C~700°C. At temperatures between 25°C and 500°C, the peak AE energy occurs near the peak strength of the sandstone. The ringing counts of the sandstone specimens reached a maximum after the peak stress when the temperature was 700°C, and the peak AE energy gradually decreased at higher heating temperatures. The T2 spectrum curve and pore size curve of the sandstone increased and gradually shifted to the right with the increase of the treatment temperature, and the area of the T2 spectrum and porosity also gradually increased. There is a negative correlation between porosity and total area of T2 spectrum and peak stress and elastic modulus of sandstone under high temperature. The micropores showed a monotonically decreasing trend with increasing temperature","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geometric models for incorporating solid accumulation at the nodes of open-cell foams 开孔泡沫节点处固体堆积的几何模型

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-09-01 DOI: 10.1615/jpormedia.2024053135

Esmari Maré, Sonia Fidder

引用次数: 0

Heat Transfer Enhancement of Modified Sodium Acetate Trihydrate Composite Phase Change Material with Metal Foams 用金属泡沫增强改性三水醋酸钠复合相变材料的传热性能

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-08-01 DOI: 10.1615/jpormedia.2024053343

Huijin Xu, MS Liu, ZF He

引用次数: 0

Flow resistance study of porus media based on five-sphere model 基于五球模型的多孔介质流动阻力研究

IF 2.3 4区工程技术

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

{"title":"Flow resistance study of porus media based on five-sphere model","authors":"Hu Junlei, Guan Chong, Zheng Kuncan, Shi Qiangjun, Han Fulin, Chen Zhaodong","doi":"10.1615/jpormedia.2024049750","DOIUrl":"https://doi.org/10.1615/jpormedia.2024049750","url":null,"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.","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Advanced Nine-Point Scheme based on Finite Analysis in Two-Dimensional Numerical Reservoir Simulation 基于有限分析的先进九点方案在二维数值储层模拟中的应用

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-08-01 DOI: 10.1615/jpormedia.2024049723

Jun Hu, Ya-Juan Dong, Zhi-Feng Liu, Jin-Biao Yu, Xiao-Hong Wang, Yong Wang

引用次数: 0

CONVECTIVE FLOW AND HEAT TRANSPORT OF CLAY NANOFLUID ACROSS A VERTICAL SURFACE IN A DARCY-BRINKMAN POROUS MEDIUM 粘土纳米流体在达西-布林克曼多孔介质垂直表面上的对流和热传输

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-08-01 DOI: 10.1615/jpormedia.2024053261

Umair Khan, Aurang Zaib, Anuar Ishak, El-Sayed M. Sherif, Ioan Pop

{"title":"CONVECTIVE FLOW AND HEAT TRANSPORT OF CLAY NANOFLUID ACROSS A VERTICAL SURFACE IN A DARCY-BRINKMAN POROUS MEDIUM","authors":"Umair Khan, Aurang Zaib, Anuar Ishak, El-Sayed M. Sherif, Ioan Pop","doi":"10.1615/jpormedia.2024053261","DOIUrl":"https://doi.org/10.1615/jpormedia.2024053261","url":null,"abstract":"Drilling fluids are important in the extraction of oils and gases through rocks and soil. Clay nanoparticles are essential for enhancing drilling fluid efficiency. The thermal conductivity, viscosity, and boiling point of drilling fluids increase when clay nanoparticles are incorporated, providing resistance to high temperatures and regulating fluid costs. This article illustrates the convection heat transfer in drilling nanofluid while taking into account the significant presence of clay nanoparticles in the fluid used for drilling. The efficient thermophysical characteristics of clay nanofluid are expressed mathematically using Maxwell-Garnett and Brinkman's formulas. The linear PDEs with physical boundary conditions that control the flow phenomena are predetermined. The similarity technique is employed to transmute these PDEs into ODEs and then an efficient bvp4c solver is utilized to find dual solutions. The Nusselt number and skin friction are calculated and displayed in tabular form as well as graphical form along with the velocity and temperature profiles. Multiple solutions are observed in the case of shrinkable sheets as well as in the case of buoyancy assisting flow. The findings demonstrate that when volume concentration increases, the Nusselt number rises noticeably. In addition, the permeability parameter expands the boundary layer thickness in the lower solution, while the contrary behavior is observed in the upper solution.","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141942559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring Impacts of Using Porous Media on Heat Transfer in Helical Coils: A Comprehensive Numerical Study 探索使用多孔介质对螺旋线圈传热的影响：综合数值研究

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-08-01 DOI: 10.1615/jpormedia.2024052876

Hamid-Reza Bahrami, Mahdi Mohseni

{"title":"Exploring Impacts of Using Porous Media on Heat Transfer in Helical Coils: A Comprehensive Numerical Study","authors":"Hamid-Reza Bahrami, Mahdi Mohseni","doi":"10.1615/jpormedia.2024052876","DOIUrl":"https://doi.org/10.1615/jpormedia.2024052876","url":null,"abstract":"This research investigates the thermal performance of a helically coiled tube filled with a porous material. The study uses numerical simulations over a wide range of Reynolds and Darcy numbers. The porous materials used are steel, aluminum, and copper. To determine the contribution of porous material as well as the spiraling effects of the pipe to increased heat transfer, the simulations were also run for a helical coil without porous material and a porous-filled straight tube. The pitch and radius of the coil were varied, resulting in different coil turns for a given length of the pipe. The rate of exergy destruction in different states was calculated to determine the optimal operating point of the system. The study reveals that porous material significantly improves heat transfer in both straight and helical tubes. The optimal performance is achieved at higher Darcy numbers, with heat transfer being independent or dependent on Re. The highest Nu value is around 450 at Da=0.1 and Re=2000, about 103 times and 17 times the Nu in the straight and helical tubes without porous material, respectively. However, the peak value of PEC is 2 and 17 with respect to porous-filled straight tubes and non-porous helical coils. The main achievement of this study is that it shows that porous media can be applied to amplify heat transfer beside the secondary flow in helical tubes under specific conditions. This enhancement occurs when using porous media with high Da numbers, such as Da ~ 0.1. In contrast, the study shows that using porous media with low permeability (Da ~ 0.0001) surpasses secondary flows effects where the thermal performances of porous filled helical tubes and straight t","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhomogeneous wave propagation in porothermoelastic medium with dual-phase-lag heat conduction 多孔热弹介质中的非均质波传播与双相滞后热传导

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-08-01 DOI: 10.1615/jpormedia.2024053065

Manjeet Kumari, Priyanka Lather, Neelam Kumari, Pradeep Kaswan, Manjeet Kumar

{"title":"Inhomogeneous wave propagation in porothermoelastic medium with dual-phase-lag heat conduction","authors":"Manjeet Kumari, Priyanka Lather, Neelam Kumari, Pradeep Kaswan, Manjeet Kumar","doi":"10.1615/jpormedia.2024053065","DOIUrl":"https://doi.org/10.1615/jpormedia.2024053065","url":null,"abstract":"We are examining a mathematical model incorporating a heat conduction dual-phase-lags (DPL) model. One may use this model to examine how thermoelastic waves behave in a porous thermoelastic material. A modified version of the Christoffel equations is extracted from the model to investigate the propagation of harmonic plane waves. We next solve these equations to get the complex velocities of waves in the medium. Four waves appear in the medium, and the equations explain their existence and propagation. We find the correlations between the displacements of solid and fluid particles and the wave-induced temperature in the medium. The study considers the case of inhomogeneous wave propagation, defined by a complex slowness vector specification with a finite non-dimensional parameter indicating the inhomogeneity degree. Each of the four attenuated waves propagating inhomogeneously through the porous aggregate has its phase velocities and attenuation coefficients determined. We calculate the velocities and attenuation of the compressional and shear waves using a numerical model of liquid-saturated sandstone. Their fluctuations with thermal and poroelastic parameters are depicted visually.","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of salt crystals in soil using electrochemical measurements 利用电化学测量法确定土壤中盐晶体的特征

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-07-01 DOI: 10.1615/jpormedia.2024052860

Ferid Mezdari, Walaeddine Maaoui, Faycel Tiss, Mustapha Najjari, Kamel Khirouni, Noureddine Hamdi

{"title":"Characterization of salt crystals in soil using electrochemical measurements","authors":"Ferid Mezdari, Walaeddine Maaoui, Faycel Tiss, Mustapha Najjari, Kamel Khirouni, Noureddine Hamdi","doi":"10.1615/jpormedia.2024052860","DOIUrl":"https://doi.org/10.1615/jpormedia.2024052860","url":null,"abstract":"Soil salinization is considered among the most serious problems that affect irrigated lands and, thus, food security in the world. It is interesting to develop methods to test soil salinization. In this paper, the electric properties of sand-salt crystals (NaCl) mixtures (SSM) are investigated using electrical impedance spectroscopy. Seven samples were considered by mixing dry sand and salt crystals with different salt mass percentages (SMP) from 0% to 100%. The electrical responses are explored by measuring the electrical impedance and the global conductance for different SSM filling a small capacitive cell. The influence of frequency and SMP on the electrical conductance and the complex impedance are investigated. It was found that the conductance shows high dispersion with SMP at the whole frequency range and a high dispersion with frequency at low and high frequencies (≤103Hz and ≥105Hz). Impedance diagrams show a frequency dispersion at high and low frequencies that is modeled by an equivalent circuit constituted of three dipoles in series, each one formed by a pure resistance and a constant phase element in parallel. Findings characteristics are directly related to the rate of salt crystals in the samples. Then, the method developed in this work constitutes a non-destructive technique for detecting salt crystals in soils in arid regions and can be used to develop devices for in situ measurements.","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of multiphase flow in low permeability porous media: Effect of wettability and Capillary numbers 低渗透性多孔介质中的多相流建模：润湿性和毛细管数的影响

IF 2.3 4区工程技术

Journal of Porous Media Pub Date : 2024-07-01 DOI: 10.1615/jpormedia.2024053606

Mingjing Lu, Yuegang Wang

{"title":"Modeling of multiphase flow in low permeability porous media: Effect of wettability and Capillary numbers","authors":"Mingjing Lu, Yuegang Wang","doi":"10.1615/jpormedia.2024053606","DOIUrl":"https://doi.org/10.1615/jpormedia.2024053606","url":null,"abstract":"Shale oil reservoirs are characterized by dense, extremely low permeability, and poorly developed natural fractures, and hydraulic fracturing technology is often used in extraction to improve recovery. It is significant to clarify the mechanism and influence mechanism of the displacement in complex porous media coupled with fractures and matrix to enhance oil recovery. In this study, based on the lattice Boltzmann method utilizing the fracture-matrix pore coupling model, the authors carried out a study of displacement in organic and inorganic pore space and systematically investigated the influence mechanisms of wettability and Ca on the crude oil recovery rate. It was found that the stronger the wettability of the water phase, the higher the crude oil recovery rate, and the lower the residual oil in the form of adsorbed oil film; and the larger the Capillary numbers, the higher the crude oil recovery rate. Crude oil in organic pore space is more difficult to discharge compared with that in inorganic pore space, and the recovery rate of crude oil in organic pore space can be effectively improved by increasing the driving pressure and enhancing the properties of the water phase (fracturing fluid).","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0