Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids



Título del documento: Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
Revista: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000308629
ISSN: 0104-6632
Autores: 1

Instituciones: 1Universidade Federal de Uberlandia, Programa de Pos-Graduacao em Engenharia Quimica, Uberlandia, Minas Gerais. Brasil
Año:
Periodo: Dic
Volumen: 16
Número: 4
Paginación: 387-394
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The objective of this work is to study the effect of confining walls on the free settling of spherical particles along the axes of five vertical cylindrical tubes in Newtonian and non-Newtonian liquids. Experimental results were predominantly obtained in the particle flow region between the Stokes and the Newton regimes (intermediate region) and displayed Reynolds numbers in the ranges 0.7<Re<311 for aqueous glycerine solutions and 0.2<Re<340 for aqueous carboximethilcellulose solution considering the range of 0<b<0.55. These results allowed to analyze the procedure for estimating vt¥ as a function of b based on vt data and present correlations for estimating the wall effects on the fall of spheres in Newtonian liquids as well as for the characteristic shear rate of spheres in non-Newtonian fluids
Disciplinas: Química
Palabras clave: Ingeniería química,
Efectos de pared,
Partículas esféricas,
Fluido newtoniano,
Fluidos no newtonianos
Keyword: Chemistry,
Chemical engineering,
Wall effects,
Spherical particles,
Newtonian fluids,
Non Newtonian fluids
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