2024
DOI: 10.3390/pr12020363
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Study on Flow and Heat Transfer in Single Rock Fractures for Geothermal Heat Extraction

Duanru Li,
Gang Liu,
Shengming Liao

Abstract: A full understanding of the fluid flow and heat transfer behaviors within a single fracture is important for geothermal heat extraction. In this study, models of single fractures with varying aperture and inner surface roughness (characterized by fractal dimension) are constructed, and a compound fracture aperture (CFA) is proposed to describe the coupled effect of fracture aperture and inner surface roughness. The effect of the fluid flow Reynolds number on heat transfer was investigated as it ranged from 4.8… Show more

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