A numerical method for discrete fracture network model for flow and heat transfer in two-dimensional fractured rocks

被引：0

作者：

Chen, Biguang ^{[1
,2
]}

Song, Erxiang ^{[1
,2
]}

Cheng, Xiaohui ^{[1
,2
]}

机构：

[1] Department of Civil Engineering, Tsinghua University, Beijing 100084, China

[2] Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2014年 / 33卷 / 01期

关键词：

Finite element method - Numerical methods - Flow of fluids - Fracture - Rocks - Heat transfer - Heat exchangers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

For the problem of flow and heat transfer in fractured rocks, two hypotheses of heat exchange between rock matrix and fluid in the fracture are compared analytically. It is found that the same result will be obtained for that the fracture aperture is small in general. A discrete fracture network model is realized in commercial finite element software COMSOL for the computation of flow and heat transfer in fractured rock. Both fluid flow and heat transfer in rock matrix and fracture can be calculated in this model, as well as fluid and heat exchange between them. The results are validated by comparing with analytical solutions. Finally, the model is used to simulate a randomly generated fracture network to study the characteristics of flow and heat transfer in fractured rock;and reasonable results are obtained.

引用

页码：43 / 51