Aferição do modelo VOF na caracterização de padrões de escoamento multifásico em tubulação horizontal e inclinada
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Data
2016-04-08
Autores
Lima, Marcel Pereira
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal do Espírito Santo
Resumo
This work aims to verify the performance of Volume of Fluid model on flow patterns characterization in horizontal and inclined circular cross section pipe. For this purpose it was used a 42 mm diameter tube with straight section of about 4.5 m in numerical and experimental tests of three flow patterns: slug, churn and stratified wavy. The fluids used were water and air in the respective flow rates of 4.99 m3/h and 9.97 m3/h for both slug and stratified wavy patterns, under15° upward and 15° downward respectively. However, churn pattern was performed under 3.49 m3/h of water and 19.95 m3/h of air in horizontal pipe.Volume of Fluid (VOF) multiphase flow model combined with k-Realizable turbulence model and scalable wall function were set inCFD commercial software, as well as specific parameters for temporal discretization and mesh refinement, besides spatial discretization methods consistent with the flows. The set of parametersand numerical methods were based on the literature and the mesh refinement was set according to mesh test. In order to evaluate the performance of the numerical modeling, images from experimental flow were compared to the numerical ones and the literature, giving good agreement between them
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Gás-líquido , Simulação numérica
Citação
LIMA, Marcel Pereira. Aferição do modelo VOF na caracterização de padrões de escoamento multifásico em tubulação horizontal e inclinada. 2016. 113 f. Dissertação (Mestrado em Engenharia Mecânica) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2016.