DEPIVOT: a model for center-pivot design and evaluation

Detalhes bibliográficos
Autor(a) principal: Valín, M.I.
Data de Publicação: 2012
Outros Autores: Cameira, M.R., Teodoro, P.R., Pereira, L.S.
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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spelling 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 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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