site stats

Pore fractal characteristics

WebMay 15, 2024 · To study the pore structure and fractal characteristics of pulverized intact coal and tectonic coal, proximate analysis, gas adsorption/desorption, and N 2 (77K) adsorption experiments were performed. The results show that micropore, minipore and mesopore volumes, as well as specific surface areas (SSAs), are dependent on the … WebDec 14, 2024 · The total pore volume of PH lignite increases rapidly in the pore size range of 0.46–25 nm, the growth rate changes steeply in the pore size range of 25–147.5 nm, and then, it gradually becomes flat and stable, indicating that the cumulative pore volume contribution of PH lignite mainly comes from the pore volumes of ultra-micropores, …

Experimental Study on Pore Characteristics and Fractal ... - Hindawi

WebAug 30, 2024 · When quantifying the complexity of shale pores, the fractal dimension is between 2 and 3. The larger the fractal dimension is, the more complex the shale pore structure. The object does not have fractal characteristics if the fractal dimension is less than 2 or greater than 3 (Tang et al., 2024). Results Pore types and characteristics of shale WebFinally, combined with TOC and mineral compositions, the relationship between pore structure and fractal dimension is discussed. And the following research results are obtained. First, dominant lithofacies of Dalong Formation are argillaceous-rich siliceous shale and argillaceous-rich/siliceous mixed shale, which has smaller specific surface area … cladding blackburn https://bulkfoodinvesting.com

Frontiers Pore structure and fractal characteristics of Wufeng ...

WebFractal objects are characterized by self-similarity within a spatial range. The fractal dimension is calculated from the p exponent of Eq. 2, and gives information about the pore surface before and after the addition of the natural extract. For mass fractals (2 WebFeb 12, 2024 · Results show that the pore space occupied by fluids within hydrate-bearing sands is inherently fractal. The area pore-size fractal dimension decreases but the tortuosity fractal dimension changes little with increasing hydrate saturation, and the sum of these two fractal dimensions can be used to predict the volume pore-size fractal dimension. WebPore Fractal Characteristics of Hydrate-Bearing Sands and Implications to the Saturated Water Permeability 1 Introduction. Gas hydrates are crystalline compounds composed of water and gas molecules, and they are mainly found in... 2 Theory and Experimental Method. In nature, the cumulative number of ... cladding bathroom panels

Charles "Chuck" Speicher Jr. - Chairman of the Board - LinkedIn

Category:Effects of Wetting-Drying Cycles on the CT-Measured Macropore ...

Tags:Pore fractal characteristics

Pore fractal characteristics

Evaluation of highly carbonated hydroxyapatite bioceramic …

WebSeveral parameters such as size, shape and orientation of pores have been evaluated. In parallel, the mechanical properties such as fracture toughness and Weibull modulus were directly measured. In order to appreciate the relevance of the use of QIA, the mechanical parameters have also been deduced from the microstructural features, and a comparison … WebThe geometry parameters of roundness and shape index were adopted to study the pore morphology characteristics, and the relationship between geometry parameters and pore fractal dimension of the RAS were established by regression analysis method.

Pore fractal characteristics

Did you know?

WebThe surface of C16 was covered with highly porous apatite layers comprising large pores measuring 600–800 nm and smaller pores inside it measuring 200–400 nm ... In particular, C12 with biomimetic hierarchical micro-/nanohybrid topography demonstrated superior fractal features, the best capacity in protein adsorption and the ensuing ... <3) fractal dimension D is calculated as D=6-p, for surface fractals D=p. 29

WebMar 2, 2024 · The contributions of key pore geometry parameters, including the maximum pore diameter, minimum pore diameter, porosity, and fractal dimensions, to the initial permeability were investigated. A numerical analysis showed that the influence of fractal dimension on the permeability is finally reflected in the influence of pore structure … WebApr 13, 2024 · The D values of MNAs were 2.93 (D S) and 2.87 (D N), respectively, indicating a typical surface fractal feature and the dominance of open pores in the composite aerogels.

WebFractal Characteristics of Coal Pores Based on Classic Geometry and Termodynamic models Acta Geologica Sinica-English Edition 2011 年 6 月 15 日 To better understand the characteristics of coal pores and their influence on coal reservoirs, coal pores in … WebEvaluation of carbonate heterogeneity, closely related to pore geometry and connectivity, is important in oil and gas field production and reservoir prediction 掌桥科研 一站式科研服务平台

WebApr 1, 2024 · DOI: 10.1016/j.energy.2024.127470 Corpus ID: 258047069; Experimental study of effect of liquid nitrogen cold soaking on coal pore structure and fractal characteristics @article{2024ExperimentalSO, title={Experimental study of effect of liquid nitrogen cold soaking on coal pore structure and fractal characteristics}, author={}, journal={Energy}, …

WebSep 6, 2024 · Pore fractal characteristics. Fractal theory has been widely used to analyze the irregularity and complexity of the pore structure in porous media. According to the percolation theory, in the process of a high-pressure mercury injection experiment, mercury will enter the sample in two stages. downdetector map usaWebFeb 15, 2024 · The pore structures present multiple fractal behaviors, with fractal dimensions showing an increasing trend as the pore diameter decreases. The cover coefficient, a parameter that allows characterization of the caprock sealing performance, shows an increasing trend along with increasing the fractal dimension of pore structure. cladding bracketsWebNov 20, 2024 · By calculating pore surface fractal dimensions based on Zhang’s fractal model, the obvious fractal characteristics of micropores (<100 nm) and macropores (> 10 5 nm) have been found. cladding billWebMay 19, 2024 · The fractal characteristics of the pore surface of the shale in the Niutitang Formation in Guizhou were more obvious. The fractal dimension had a quadratic relationship with the BET specific surface area, and the average pore size and TOC content decreased with an increase in the fractal dimension. down detector mediacomWebApr 8, 2024 · Relationship of Fractal–Multifractal Characteristics and Pore-Throat Structure. Figure 10 shows the relationships between D box and pore-throat parameters of the 11 non-fractured igneous rock samples. For the same type of pores, there was a significant positive correlation between D box and porosity (Fig. 10a). downdetector marriottWebMay 27, 2024 · It is important to control and predict the macroscopic properties through pore structure parameters of cement-based materials. Microscopic pore structure of concrete has many characteristics, such as sizes and disordered distribution. It is necessary to use fractal theory to describe the pore structure of concrete. In order to establish the … cladding board prices in sri lankaWebFeb 15, 2024 · Characteristics of pore structure of different metamorphic coal were discussed. • The fractal dimension characteristics of pore structure are studied. • Through fractal dimensions of pores, the accurate data of pore sizes in a wider range are obtained. • The new pore classification scheme is put forward by piecewise fractal dimensions. down detector map