Numerical simulation and experimental study of non-newtonian mixing flow with a free surface



Título del documento: Numerical simulation and experimental study of non-newtonian mixing flow with a free surface
Revista: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000309071
ISSN: 0104-6632
Autores: 1

2

Instituciones: 1University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana. Eslovenia
2University of Ljubljana, Faculty of Chemistry and Chemical Technology, Ljubljana. Eslovenia
Año:
Periodo: Dic
Volumen: 23
Número: 4
Paginación: 473-486
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés The object of this work was to evaluate the capability of numerical simulation to predict different features of non-Newtonian fluid mixing process. A relatively simple impeller (six bladed vane rotor) was used for the mixing of carboxymethyl cellulose. A LDA method was used to measure the tangential velocity at two points inside the mixing vessel. Using visualization, a significant vortex above the impeller was observed. The shape of the free surface was determined by a geometrical reconstruction of the images of the illuminated section. Torque on the impeller shaft was measured to determine the characteristics of the fluid. Fluent program package was used for the simulation. The problem is challenging since the effects of non-Newtonian fluid, mixing process and free surface have to be included in the simulation. The comparison between the experimental and numerical results confirms the accuracy of the simulations
Disciplinas: Química
Palabras clave: Fisicoquímica y química teórica,
Fluidos no newtonianos,
Mezclado,
Dinámica de fluidos,
Simulación numérica,
Superficie libre
Keyword: Chemistry,
Physical and theoretical chemistry,
Non Newtonian fluids,
Mixing,
Fluid dynamics,
Numerical simulation,
Free surface
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