Fractured rock mass is comprised of randomly distributed natural and/or hydraulic fractures, which make it difficult to characterize the fluid flow in fractured rock mass by traditional approaches. The fluid flow through rock fractures and fracture networks can influence the mechanical behavior of rock masses, and in turn, the deformation of rock masses can change the aperture of fracture and then impact the hydraulic properties. Therefore, it is important to study the multiphysics coupling behavior of fluid flow in rock fractures/fracture networks. Those complex fractures and coupling characteristics are of great importance to practical projects like geological storage of carbon dioxide, geothermal exploitation, unconventional oil and gas production, and nuclear waste storage. In recent years, with the development of computational techniques, various methods for such complex multiphysics processes have been proposed and some new findings have been reported. However, due to the complexity of both fracture geometry and multiphysics coupling process, it is still a challenge to study the fluid flow in fractured rock masses. Therefore, new numerical methods are being continuously developed to help describe fluid flow mechanisms.

This Special Issue aims at presenting recent advances in studies on the coupling characteristics in the process of fluid flow in fractured rock mass. We invite you to submit comprehensive review papers and original articles.

Potential topics include but are not limited to the following:

• Novel simulation of multiphase flow in fracture network or porous fractured media
• Novel simulation of fluid flow in roughness-walled fracture
• Novel simulation of fluid flow in fracture network or porous fractured media
• Flow and transport dynamics in fractured porous media driven by enhanced oil recovery
• Multiphysics coupling process in fracture seepage
• Stress-flow process
• Effect of freeze-thaw cycles on mechanical behaviors of rocks
• Linear/nonlinear flow
• Unsaturated flow through fractures
• Artificial intelligence-aided research and application of fluid flow in fractured rock mass