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Apparent Permeability Prediction of Coal Matrix with Generalized Lattice Boltzmann Model considering Non-Darcy Effect
المؤلفون المشاركون
Yao, Qi
Liu, Shenggui
Li, Yingjun
Peng, Zhigao
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-14، 14ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-09-01
دولة النشر
مصر
عدد الصفحات
14
التخصصات الرئيسية
الملخص EN
Methane flow in coal is associated with the content of both organic matter (OM) and inorganic matter (IOM).
Coal matrix contains nanopores ranging in size from a few to hundreds of nanometers, which leads to a non-Darcy effect where the measured permeability of a gas (apparent permeability) is higher than that of a liquid (intrinsic permeability).
In this study, a generalized Lattice Boltzmann model (GLBM) is employed for gas flow through the reconstructed coal matrix consisting of OM, IOM, and fractures.
The apparent permeability model is proposed to calculate the total flow flux accounting for multiple transport mechanisms including viscous flow, slip flow, transitional flow, and the Knudsen diffusion.
The impact of effective pore radius and gas surface diffusion on permeability in the gas adsorption-desorption process is also considered in the model.
What’s more, the weighting factors are adopted to adjust the contribution of the viscous flow and the Knudsen flow.
The effect of total organic/inorganic content and the development of fractures on the apparent permeability of the reconstructed coal matrix is also studied.
It is found that the apparent permeability is extremely low when a fracture is nonexistent, and varies almost linearly with the total organic/inorganic content.
A fracture plays a significant role in determining apparent permeability and the velocity distribution of the coal matrix.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Peng, Zhigao& Liu, Shenggui& Li, Yingjun& Yao, Qi. 2020. Apparent Permeability Prediction of Coal Matrix with Generalized Lattice Boltzmann Model considering Non-Darcy Effect. Geofluids،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1165633
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Peng, Zhigao…[et al.]. Apparent Permeability Prediction of Coal Matrix with Generalized Lattice Boltzmann Model considering Non-Darcy Effect. Geofluids No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1165633
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Peng, Zhigao& Liu, Shenggui& Li, Yingjun& Yao, Qi. Apparent Permeability Prediction of Coal Matrix with Generalized Lattice Boltzmann Model considering Non-Darcy Effect. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1165633
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1165633
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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