Resolved CFD-DEM simulations of the hydraulic conveying of coarse grains through a very-narrow elbow

Autor(es)

Schnorr Filho, Elmar Anton ^[1] ; Lima, Nicolao Cerqueira ^[1] ; Franklin, Erick M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Sch Mech Engn, Rua Mendeleyev 200, BR-13083860 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Powder Technology; v. 395, p. 811-821, JAN 2022.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/14981-7 - Modelagem de escoamentos granulares densos: experimentos, simulações numéricas e análises de estabilidade
• Beneficiário: Erick de Moraes Franklin
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2
• Processo FAPESP: 19/20888-2 - Simulações CFD-DEM em leitos fluidizados
• Beneficiário: Nicolao Cerqueira Lima
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado