Escolamento laminar de líquidos não-newtonianos em seções anulares: estudos de CFD e abordagem experimental

AUTOR(ES)

Fabio de Assis Ressel Pereira

DATA DE PUBLICAÇÃO

2006

RESUMO

The annular flow has great importance in the oil industry, in drilling operations with cuttings removal by drilling mud and also in petroleum artificial lifting, with progressive cavity pumping systems. The constant concern about operation costs and the more frequent necessity of raising the production capacity implies in larger flow through oil wells. In this way the pressure drop through the annular region started to represent a significant amount of the overall energy to be supplied, consequently its prediction assumed an important role in the dimensioning of these units. In the present study, the flow field analysis was based on experimental approach and also applying numeric techniques of computational fluid dynamics (CFD). In the experimental part, a pilot unit was assembled to investigate the horizontal flow of non-Newtonian liquids though the annular space formed by two tubes with concentric and eccentric layouts. The planned experimental assays were conduced to evaluate the effect of the main variables over the pressure drop, such as: system geometry (e=0,00; e=0,75), shaft rotation (0

ASSUNTO(S)

fluidodinâmica computacional computational fluid dynamic non-newtonian regime laminar laminar flow engenharia quimica escoamento anular annular flow

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