Análise da redução de arrasto em tubulação rígida com o uso de óxido de polietileno
Drag produced by flowing fluids is an important indicator to evaluate the efficiency of systems in which fluid transport occurs in a turbulent way rigid pipes. This drag is responsible for energy losses that generate high operating costs. Hence the need to minimize the effect of drag with the use of...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/48854 |
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| Resumo: | Drag produced by flowing fluids is an important indicator to evaluate the efficiency of systems in which fluid transport occurs in a turbulent way rigid pipes. This drag is responsible for energy losses that generate high operating costs. Hence the need to minimize the effect of drag with the use of polymers add
objective is to use the polyethylene oxide (PEO) polymer as a way to reduce drag in internal and turbulent flows. Solutions with concentrations of 100 ppm and 300 ppm of PEO were tested on a bench with PVC tubing and test sections of 12 mm and 17 mm of internal diameter to verify the influence of polymer concentration and internal piping diameter in drag reduction. It was also observed the loss of efficiency of the polymer according to the time of use of the polymeric solutions. In addition, Newtonian fluid behavior was verified all the solutions studied from the analysis of viscosity for each one them. Tests showed drag reductions is more significant for a solution with a concentration of 300 ppm of PEO, for both diameters, and the polymer degradation is more evident in the larger diameter piping, for both polymer concentrations studied. In addition, the highest value for drag reduction was obtained for an internal diameter of 17 mm and concentration of 300 ppm of PEO, however, considering only a single pass of volume through the pipe. |
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