Browsing by Author "Lima, Paula Gois de"

Now showing 1 - 4 of 4
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    Eles eram muitos cavalos: a alteridade na escrita da cidade
    (Universidade Católica do Salvador, 2018-10) Lima, Naiara; Vasconcelos, Liliane; UCSAL, Universidade Católica do Salvador; Santos, Juliana Souza Gomes; Lemos, Daniela Silva Motta; Souza, Daniel Santos; Lima, Paula Gois de
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    Entendimento de rotulagem alimentar por estudantes de fisioterapia de uma universidade de Salvador- BA: um estudo transversal
    (Universidade Católica do Salvador, 2018-10) Santos, Juliana Souza Gomes; Lemos, Daniela Silva Motta; Souza, Daniel Santos; Lima, Paula Gois de
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    Estudo sobre a dinâmica de fluidos computacional
    (Universidade Católica do Salvador, 2021-06-17) Cunha Júnior, Antonio Alves da; Conceição, Wagner Almeida Mônaco; http://lattes.cnpq.br/; Lima, Paula Gois de; http://lattes.cnpq.br/; Neves, Sérgio Bello; http://lattes.cnpq.br/
    Computational fluid dynamics, or CFD, is a field that deals with the numerical simulation of fluid flows, heat transfer and related phenomena, being able to calculate how operating conditions - temperature, pressure and transport properties - in three-dimensional or two-dimensional space. In this way, there is a possibility of verifying problems that a traditional simulation cannot map because it works with average parameters. This study aims to explore the CFD and the equations involved, with a demonstration and a comparison between the k-epsilon model and the SST (shear stress transport turbulence) using the ANSYS-CFD (FLUENT) tool - student license end to a mixing Tee where enter a hot fluid (water) at a temperature of 363.15 K and a velocity of 3 m / s and a cold fluid (water) at a temperature of 283.15 K and a velocity of 5 m / s thus doing a study on the behavior of the mixture. To evaluate the proposed solution, a comparison of temperature and velocity parameters was performed for each model and for each change made to the geometry. It was found that the k-e and SST model converged with a criterion of 10e-6, the two models well represent the water flow along the mixing Tee, although the SST model better represents the velocity vectors along the pipeline, despite from this the two models demonstrated confidence in the temperature variation and the fluid displacement through the mixer. The worlds made on the geometry have a satisfactory answer, thus making sure that the software is an interesting tool to perform simulations involving fluid flow.
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    Simulação dinâmica de uma coluna de destilação em uma unidade de produção de etanol hidratado
    (Universidade Católica do Salvador, 2019-12-12) Cardoso, Lucas Oliveira; Neves, Sérgio Bello; http://lattes.cnpq.br/; Mustafá, George de Souza; http://lattes.cnpq.br/; Lima, Paula Gois de; http://lattes.cnpq.br/
    The Ethanol is characterized like a substance of wide applicability in the Brazil. Based on that, its possible to highlight hydrous ethanol, which is used as fuel for vehicles, the pharmaceutical industry, alcohol and beverages. However, the purification of hydrous ethanol becomes an important step for its applications. Therefore, for the development of hydrous ethanol purification a conventional distillation was used to physically separate miscible mixtures from each other. In order, to verify the dynamics of the distillation columns, Aspen Plus Dynamics was used to evaluate six control strategies and four tuning rules for three distillation columns, in order to verify the best strategy and apply to hydrous ethanol 92.5%, 93.6% and 94.6% by mass of ethanol, according to ANP. Thus, from the dynamic study using Aspen Plus Dynamics, it was possible to verify that the Ziegler-Nichols, Cohen Coon and ITAE methods showed good results, being similar, in which they chose to select the Ziegler-Nichols method. And among the control strategies, the double compositions presented better results to the disturbances performed in the flow and feed composition.