Finite element simulation of transient geothermal flow in extremely heterogeneous fractured porous media

Xing, Huilin (2014) Finite element simulation of transient geothermal flow in extremely heterogeneous fractured porous media. Journal of Geochemical Exploration, 144 PA: 168-178. doi:10.1016/j.gexplo.2014.03.002


Author Xing, Huilin
Title Finite element simulation of transient geothermal flow in extremely heterogeneous fractured porous media
Journal name Journal of Geochemical Exploration   Check publisher's open access policy
ISSN 0375-6742
Publication date 2014-01-01
Sub-type Article (original research)
DOI 10.1016/j.gexplo.2014.03.002
Open Access Status Not Open Access
Volume 144
Issue PA
Start page 168
End page 178
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Mineral deposits are strongly influenced by geothermal fluid behaviours, some of them are dominated by transient fluid flow and heat transfer in the extremely complicated fractured porous media. This paper will focus on the nonlinear finite element analysis of such transient geothermal flow behaviours in extremely heterogeneous fractured porous media. This includes the advanced unstructured mesh generation of extremely heterogeneous fractured porous media by using an image-based automatic meshing method for multi-materials and a nonlinear coupled finite element solver, which ensure an efficient numerical description and analysis of geothermal flow in each component of the extremely heterogeneous fractured porous media. The proposed approach has been implemented in our in-house finite element code and benchmarked with an analytical solution. Finally, a practical application example of a 3D fractured rock mass with multiple fractures and permeable components is analyzed to address how the heterogeneity of the fractured rock mass affects the transient fluid flow and heat transfer in the different rock components. Both the model verification and practical application are provided to demonstrate the capability and usefulness of the proposed approach for simulating transient geothermal flow in extremely heterogeneous fractured porous media.
Keyword Finite element method
Fractured porous media
Heterogeneity
Image
Mesh generation
Transient geothermal flow
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2015 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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Created: Thu, 15 May 2014, 00:04:49 EST by Dr Huilin Xing on behalf of School of Earth Sciences