Estudo do fluxo gerado por agitadores tipo ancora

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

Stirred vessels and mixing systems are the core of the chemical industries, and probably they are the oldest equipment in chemical processing for desired products. Due its great importance to the industry, these processes have been developed through the time, and in the last decades, computational techniques have been used in the project and optimization of these equipments. Particularly the Computational Fluid Dynamics - CFD. The objective of this work is to apply CFD techniques in the study of systems agitated by anchor impellers, generally used for higWy viscous fluids and therefore with high power consumption. The study has the objective to propose changes in the system so mixing can be optimized and the power consumption minimized, through the understanding of the flow pattems inside the tank. The computational package CFX 4.4. has been used as a CFD tool to generate the numerical results, which are useful to clarify the phenomena and are coherent with experimental data available in the literature. The study showed that the tools that have been used are appropriated to the study of stirred vessels and are able to design new systems and optimize actual systems, leading to money and time saving. .When compared to experimental techniques, the tools used showed that it is able to provide precise and reliable results. The suggestion for future studies is the simultaneous calculus of chemical reactions, which can lead to a better understanding of chemical reactors, especially those in which viscosity varies along time

ASSUNTO(S)

processos quimicos mistura (quimica) dinamica dos fluidos simulação (computadores)

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