On fluid flow regime transition in rough rock fractures: Insights from experiment and fluid dynamic computation

•Three fluid flow regimes were identified in mated sandstone fractures.•The pre-linear flow in mated rock fracture attributes to boundary slippage effect.•Critical hydraulic gradient for flow transition increases with confining stress.•Slip flux of the fracture with triangular asperity is largest.•T...

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Bibliographic Details
Published in:Journal of hydrology (Amsterdam) 2022-04, Vol.607, p.127558, Article 127558
Main Authors: Luo, Yong, Zhang, Zhenyu, Wang, Yakun, Nemcik, Jan, Wang, Jiahua
Format: Article
Language:English
Subjects:
Flow regime
Fluid flow
Fracture surface roughness
Hydraulic gradient
Nonlinear flow
roughness
surface roughness
water flow
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