DEPIVOT: a model for center-pivot design and evaluation
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/4659 |
Resumo: | Available at SciVerse ScienceDirect |
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DEPIVOT: a model for center-pivot design and evaluationhydraulics designsprinkler packagerunoffdistribution uniformityAvailable at SciVerse ScienceDirectCenter-pivot sprinkler irrigation became very popular. Hence, aimed at farmers advising, the simulation model DEPIVOT has been developed with the objective of design new systems or changes in systems in operation. The software consists of a simulation package developed in Visual Basic and data base in Access. The model comprises five main sub-models for: (a) computation of the gross irrigation requirements; (b) sizing of the lateral pipe spans through the hydraulics computation of the friction losses and respective operative simulation considering to the effects of topography and the possible requirements of an end gun; (c) selecting a sprinklers package with computation of pressure and discharge at each outlet and including the consideration of pressure regulators; (d) verification of the sprinklers package through estimation of runoff potential by comparing application and infiltration rates at selected locations along the lateral; and (e) estimating the expected uniformity performance indicators when in operation. The user verifies if performance is within target values set at start and may develop and compare alternative sprinkler packages until appropriate conditions are obtained. When the model is used for evaluation of systems under operation using data collected in farmers’ fields performance indicators are computed and, responding to farmers’ needs, the model may be used to design changes in the existing systems and to improve management. This paper describes the model and shows examples of applications to select a sprinkler package and assess the respective runoff potentialElsevierRepositório da Universidade de LisboaValín, M.I.Cameira, M.R.Teodoro, P.R.Pereira, L.S.2012-09-13T10:04:15Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/4659eng"Computers and Electronics in Agriculture". ISSN 0168-1699. 87 (2012) 159-1700168-1699info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:35:37Zoai:www.repository.utl.pt:10400.5/4659Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:52:16.519963Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
DEPIVOT: a model for center-pivot design and evaluation |
title |
DEPIVOT: a model for center-pivot design and evaluation |
spellingShingle |
DEPIVOT: a model for center-pivot design and evaluation Valín, M.I. hydraulics design sprinkler package runoff distribution uniformity |
title_short |
DEPIVOT: a model for center-pivot design and evaluation |
title_full |
DEPIVOT: a model for center-pivot design and evaluation |
title_fullStr |
DEPIVOT: a model for center-pivot design and evaluation |
title_full_unstemmed |
DEPIVOT: a model for center-pivot design and evaluation |
title_sort |
DEPIVOT: a model for center-pivot design and evaluation |
author |
Valín, M.I. |
author_facet |
Valín, M.I. Cameira, M.R. Teodoro, P.R. Pereira, L.S. |
author_role |
author |
author2 |
Cameira, M.R. Teodoro, P.R. Pereira, L.S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Valín, M.I. Cameira, M.R. Teodoro, P.R. Pereira, L.S. |
dc.subject.por.fl_str_mv |
hydraulics design sprinkler package runoff distribution uniformity |
topic |
hydraulics design sprinkler package runoff distribution uniformity |
description |
Available at SciVerse ScienceDirect |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-13T10:04:15Z 2012 2012-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/4659 |
url |
http://hdl.handle.net/10400.5/4659 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Computers and Electronics in Agriculture". ISSN 0168-1699. 87 (2012) 159-170 0168-1699 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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