Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024179 |
Stokes-Brinkman Flow Simulation Based on 3-D mu-CT Images of Porous Rock Using Grayscale Pore Voxel Permeability | |
Kang, Dong Hun; Yang, Eomzi; Yun, Tae Sup | |
2019-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:5页码:4448-4464 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | The direct flow simulation using high-resolution micro-computed tomographic (mu-CT) images of porous rock can be used to help understand the flow characteristics at the pore-scale and to estimate fluid properties; however, segmentation of pore space in grayscale 3-D mu-CT images, a necessary step in this process, is challenging because of issues related to the image resolution and pore-filling matrix in the gray-level images. We present a novel process for determining the voxel porosity and permeability of the gray-level regime and evaluating the bulk permeability using the Brinkman force lattice Boltzmann method. In this study, mu-CT images of Berea sandstone are acquired with two spatial resolutions. After the pore size distribution curve is experimentally obtained, the apparent pore voxels and gray pore voxels are determined based on the designated gray-level values in the gray-level (CT number) histogram, the cumulative and fractional pore volumes, and the linear relationship between CT number and individual voxel porosity. The results show that the boundary between apparent and gray pores in terms of size determines the volumetric fraction and specific surface area. Additionally, the permeability computed by considering the gray pore regime based on the proposed method is more similar to the experimentally measured value than the results of other segmentation methods because the gray pore domain is fully incorporated into the flow domain while preserving the pore connectivity. The proposed sequence of pore segmentation presents a method for handling gray-level pore space without compromising pore connectivity. |
英文关键词 | Brinkman force lattice Boltzmann method gray pore voxel permeability pore size distribution permeability |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474848500046 |
WOS关键词 | X-RAY MICROTOMOGRAPHY ; COMPUTED-TOMOGRAPHY ; BEREA SANDSTONE ; CARBONATE ROCKS ; FLUID-FLOW ; SCALE ; TRANSPORT ; MEDIA ; SEGMENTATION ; PREDICTION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183154 |
专题 | 资源环境科学 |
作者单位 | Yonsei Univ, Sch Civil & Environm Engn, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Kang, Dong Hun,Yang, Eomzi,Yun, Tae Sup. Stokes-Brinkman Flow Simulation Based on 3-D mu-CT Images of Porous Rock Using Grayscale Pore Voxel Permeability[J]. WATER RESOURCES RESEARCH,2019,55(5):4448-4464. |
APA | Kang, Dong Hun,Yang, Eomzi,&Yun, Tae Sup.(2019).Stokes-Brinkman Flow Simulation Based on 3-D mu-CT Images of Porous Rock Using Grayscale Pore Voxel Permeability.WATER RESOURCES RESEARCH,55(5),4448-4464. |
MLA | Kang, Dong Hun,et al."Stokes-Brinkman Flow Simulation Based on 3-D mu-CT Images of Porous Rock Using Grayscale Pore Voxel Permeability".WATER RESOURCES RESEARCH 55.5(2019):4448-4464. |
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