Consulta: creatorFacets:"Pimenta,Bruna D."
Registros recuperados: 2
Data/hora: 02/06/2024 01:24:49

Performance of explicit approximations of the coefficient of head loss for pressurized conduits
Provedor de dados: 91
Autores: Pimenta,Bruna D.; Robaina,Adroaldo D.; Peiter,Marcia X.; Mezzomo,Wellington; Kirchner,Jardel H.; Ben,Luis H. B.
ABSTRACT One of the parameters involved in the design of pressurized hydraulic systems is the pressure drop in the pipes. The verification of the pressure drop can be performed through the Darcy-Weisbach formulation, which considers a coefficient of head loss (f) that can be estimated by the implicit Colebrook-White equation. However, for this determination, it is necessary to use numerical methods or the Moody diagram. Because of this, numerous explicit approaches have been proposed to overcome such limitation. In this sense, the objective of this study was to analyze the explicit approximations of the f for pressurized conduits in comparison to the Colebrook-White formulation, determining the most precise ones so that they can be used as an alternative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Head loss; Darcy-Weisbach; Turbulent flow regime; Performance index.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500301

Agronomic performance of maize hybrids under supplemental irrigation depths
Provedor de dados: 91
Autores: Ben,Luis H. B.; Peiter,Marcia X.; Robaina,Adroaldo D.; Kirchner,Jardel H.; Mezzomo,Wellington; Pimenta,Bruna D.
ABSTRACT The choice of a maize hybrid, considering the technology level and irrigation management, contributes to the improvement of the plant productivity and water use efficiency (WUE). Thus, the objective of this study was to evaluate the effects of irrigation depths on production components, grain yield, technical efficiency, and WUE in maize hybrids. The experiment was conducted in Santiago, RS state, Brazil, in the 2015/2016 and 2016/2017 crop seasons, using a randomized block design in factorial scheme, consisting of five irrigation depths (0, 50, 75, 100 and 125% of crop evapotranspiration - ETc) and four maize hybrids in crop season I (2015/2016), and six maize hybrids in crop season II (2016/2017). The number of ears per plant, number of grains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water deficit; Zea mays L.; Water use efficiency; Genotypes; Grain yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700524