检索结果-南通市图书馆

Seepage law and permeability calculation of coal gas based on klinkenberg effect

Journal of Central South University 2015年第5期22卷 1973-1978页

作者：王登科魏建平付启超刘勇夏玉玲 State Key Laboratory Cultivation Base for Gas Geology and Gas Control (Henan Polytechnic University) School of Safety Science and Engineering Henan Polytechnic University Collaborative Innovation Center of Coal Safety Production of Henan Province College of Computer Science and Technology Henan Polytechnic University

Focused on the klinkenberg effect on gas seepage, the independently developed triaxial experimental system of gas seepage was applied to conduct research on the seepage characteristics of coal seam gas. By means of experimental data analysis and theoretical derivation, a calculation method of coal seam gas permeability was proposed, which synthesized the respective influences of gas dynamic viscosity, compressibility factor and klinkenberg effect. The study results show that the klinkenberg effect has a significant influence on the coal seam gas seepage, the permeability estimated with the method considering the klinkenberg effect is correct, and this permeability can fully reflect the true seepage state of the gas. For the gas around the standard conditions, the influences of dynamic viscosity and compressibility factor on the permeability may be ignored. For the gas deviating far away from the standard conditions, the influences of dynamic viscosity and compressibility factor on the permeability must be considered. The research results have certain guiding significance in forming a correct understanding of the klinkenberg effect and selecting a more accurate calculation method for the permeability of coal containing gas.

关键词： coalbed gas seepage law klinkenberg effect gas adsorption-desorption permeability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Gas Flow Through Square Arrays of Circular Cylinders with klinkenberg effect:A Lattice Boltzmann Study

引用

Communications in Computational Physics 2010年第10期8卷 1052-1073页

作者： Zhenhua Chai Baochang Shi Zhaoli Guo Jianhua Lu School of Mathematics and Statistics Huazhong University of Science and TechnologyWuhan430074China State Key Laboratory of Coal Combustion Huazhong University of Science and TechnologyWuhan430074China

It is well known that,as non-continuum gas flows through microscale porous media,the gas permeability derived from Darcy law is larger than the absolute permeability,which is caused by the so-called klinkenberg effect or slippage *** this paper,an effective definition of Knudsen number for gas flows through square arrays of circular cylinders and a local boundary condition for non-continuum gas flows are first proposed,and then the multi-relaxation-time lattice Boltzmann equation including discrete effects on boundary condition is used to investigate klinkenberg effect on gas flow through circular cylinders in square *** results show that the celebrated klinkenberg equation is only correct for low Knudsen number,and secondorder correction to klinkenberg equation is necessary with the increase of Knudsen ***,the present numerical results are also compared to some available results,and in general an agreement between them is observed.

关键词： klinkenberg effect multi-relaxation-time lattice Boltzmann equation Knudsen number klinkenberg equation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：