Navegando por Assunto "Flow"

Agora exibindo 1 - 3 de 3

Acesso aberto (Open Access)
Diálogos com a metrópole: um estudo antropológico sobre moradores da ilha do Maracujá em relação de proximidade com Belém (PA)
(Universidade Federal do Pará, 2011-01-31) BASSALO, Terezinha de Fátima Ribeiro; SILVEIRA, Flávio Leonel Abreu da; http://lattes.cnpq.br/1972975269922101
This thesis shows the results of an ethnographical research did with the locals of the Maracujá island, focusing on their proximity to Belém City and having as locus an area that begins in the Açaí Port, located in the Jurunas District in Belem and goes up to the Maracujá island, enphasizing in this relation aspects concerning the daily movement between the banks. The approach of the research develops the notions of flow and border, pointing out also the fixity in the home place. Both, fixity and movement are embodied in everyday life, observed in the corporality that mediates the dialogue- while complex game - between the banks.
Acesso aberto (Open Access)
Estudo comparativo entre metodologias de dimensionamento de sistemas prediais de água fria de um hospital localizado em Belém do Pará, de acordo com a atualização da nbr 5626
(Universidade Federal do Pará, 2023-03-30) MACHADO, Cláudia Letícia da Silva; SANTOS, Aline Christian Pimentel Almeida; http://lattes.cnpq.br/1388841813412015; ADAM, Katiucia Nascimento; http://lattes.cnpq.br/2498018628901734
The hydraulic installations must be designed and built in such a way as to ensure the uninterrupted supply of water, in sufficient quantity, at adequate pressures and speeds, under appropriate conditions for the development of human activities and for human consumption, ensuring comfort to users including the reduction of noise levels in pipes. These conditions are met from the technical standards that determine hydraulic parameters and calculation methods to be followed by designers, who take into account a theoretical study of pipe and connection sizing that, in practice, due to water consumption and practical operation, ended up causing the adequacy of manufacturers of sanitary appliances, development of more efficient technologies. Through laboratory tests, many manufacturers began to provide essential technical information for the development of more assertive projects, such as the actual water consumption of the appliances, especially the characteristic curves of flow as a function of pressure, fundamental for use in the design of water systems and for the development of new methods, in order to consider the variable flow in the points of consumption. Tied to this new scenario the updating of technical standards among them the NBR 5626, which expands the possibility of using specific data of manufacturers and sizing of facilities. In this context, the present work proposed a comparative study of the sizing methodologies of the hydraulic installations of cold water installed in a hospital located in Belém do Pará, according to the update of NBR 5626/2020 building systems of cold water and hot water - design, execution, operation and maintenance that cancels and replaces NBR 5626/1998 cold water building facilities. Thus, the research was divided into step (1) bibliographic research, presentation of the study area and data collection, step (2) dimensioning of the cold water system considering nbr 5626/98, step (3): sizing of the cold water system considering NBR 5626/20 and step (4) analysis of the results. In general, with this case study, a practical approach was obtained to apply the updated parameters of the NBR 5626/2020 regulation in relation to NBR 5626/1998, presenting flow values, determined by the specific information of each sanitary piece, where we had an increase in this parameter, as to the diameter we had in most of the preumadas the decrease directly interfering in the load loss that increased and how much available pressure a decrease.
Acesso aberto (Open Access)
Soluções híbridas com uso de transformadas integrais na análise do escoamento em mancais de escora circulares
(Universidade Federal do Pará, 2014-12-15) MEDEIROS, Nielson Veloso; QUARESMA, João Nazareno Nonato; http://lattes.cnpq.br/7826389991864785; https://orcid.org/0000-0001-9365-7498
This paper explores the modeling and solution of the Reynolds equation and simulate the problem of hydrodynamic lubrication in bearings of circular anchor shoes with Rayleigh and milled pad. Mathematical modeling of the problem of hydrodynamic flow in bearings with consideration of centrifugal inertial terms produces a modified generic equation Reynolds called Reynolds equation with inertial terms version. This equation is solved by the generalized integral transform technique (TTIG) method, where it transforms the Reynolds equation system for generating a common, endless and non- linear equations for obtaining the analytical and numerical solutions of the field of fluid film pressure, the charge and power consumed by the bearing, where these performance parameters depend on the geometry adopted for the bearing. Thus, four algorithms were originated by the transformed system, and the difference between them are the geometries chosen for the bearings, but all computer codes made use of the traditional way of TTIG. In all codes were implemented in Fortran 90/95 language and solved by routine BVPFD of IMSL (1987) library. The solution to said Reynolds equation expressed using the work dimensionless transfer potential P(r,) that was found for various combinations of dimensionless coefficients that constitute the terms of this equation. The applicability of the technique was verified by comparing the results from the use of GITT the values found by the finite volume method (FVM) in a paper published by Blanco e Prata, 1998 e 2014. Behavior of pressure fields was verified by varying the sizes of the series obtained by computer codes. The results show reasonable convergence.