Modeling and numerical simulation of slurry flow / Modelagem e simulação numérica de escoamento de polpa

• Autor(a) principal: Januário, João Rodolfo
• Data de Publicação: 2019
• Outros Autores: Maia, Cristiana Brasil
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Veras
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/3915
• topic: Mineral pulps; Critical velocity; Slurry flow; Non-Newtonian fluids; equivalent viscosity; variable viscosity

The objective of the present study was to implement distinct non-Newtonian fluid theories of heterogeneous mixture between water and minerals, aiming to identify the advantages and limitations of each model. Different CFD methodologies were associated with characterization methods of fluids and validated using experimental literature data to be used as a tool to calculate pressure losses in a pipe. With the results obtained, the most efficient methodology to simulate this type of flow can be chosen. The methods contemplated the use of equivalent viscosity and variable viscosity. Equivalent viscosity results were closer than the variable viscosity results to experimental data, however, the variable viscosity model did not require experimental data to interpolate the boundary conditions.