| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Campinas UNICAMP, Sch Mech Engn, Rua Mendeleyev 200, BR-13083860 Campinas, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Powder Technology; v. 395, p. 811-821, JAN 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
This paper investigates numerically the hydraulic conveying of solids through a 90 degrees elbow that changes the flow direction from horizontal to vertical, in the very-narrow case where the ratio of pipe to particle diameters is less than 5. We performed resolved CFD-DEM (computational fluid dynamics -discrete element method) computa-tions, in which we made use of the IB (immersed boundary) method of the open-source code CFDEM. We inves-tigate the effects of the water flow and particle injection rate on the transport rate and sedimentation by tracking the granular structures appearing in the pipe, the motion of individual particles, and the contact network of set-tled particles. We found the saturated transport rate for each water velocity and that a large number of particles settle in the elbow region for smaller velocities, forming a crystal-like lattice that persists in time, and we propose a procedure to mitigate the problem. (c) 2021 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 18/14981-7 - Modeling of dense granular flows: experiments, numerical simulations and stability analyses |
| Grantee: | Erick de Moraes Franklin |
| Support Opportunities: | Research Grants - Young Investigators Grants - Phase 2 |
| FAPESP's process: | 19/20888-2 - CFD-DEM simulations of fluidized beds |
| Grantee: | Nicolao Cerqueira Lima |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |