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The research presented in this paper is on settling and flow and transport of sand particles in hydraulic fractures. During hydraulic fracturing of georeservoirs for geothermal and hydrocarbon extraction, small particulate material is introduced into newly formed fractures. Although the granules keep the fractures open under in-situ pressures, the best practices to transport proppant into reservoir fractures have not yet been developed. This paper contributes to better fundamental understanding of dense- and dilute-phase flow and transport of particulate slurries in fractures. From the micromechanical perspective, understanding the spatio-temporal flow and transport of particles into realistic fractures poses a significant challenge. Discrete Element Method is coupled with computational fluid dynamics for numerical modeling, and particle agglomerations on flow and transport, as well as, settling and deposition of particles on inclined fracture bottoms was studied.
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