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Revista Ingenierías Universidad de Medellín

versão impressa ISSN 1692-3324

Resumo

LAIN, Santiago et al. Determining the Blend Time in a Drinking Water Storage Tank through Computational Fluid Dynamic (CFD). Rev. ing. univ. Medellín [online]. 2011, vol.10, n.19, pp.55-65. ISSN 1692-3324.

In order to estimate the hydraulic behavior of a drinking water storage tank, Computational Fluid Dynamic (CFD) simulation program was used to numerically evaluate blend speed and time profiles. Speed profiles showed a maximum value when leaving at 0.76 m.s-1 and 0.2 m.s-1 speeds near walls, creating recirculation areas near the inlet stream. Injection of tracer and the variation coefficient for 17 monitoring points in the tank resulted in a blend time of 19.06 hours and it was found that the blend near walls is less efficient than in the inlet stream trajectory. Necessary volume to enter the tank in order to achieve a good blend was inversely proportional to the water mass stored.

Palavras-chave : Computational Fluid Dynamic (CFD); drinking water storage tank; blend time; tracer.

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