A mathematical model for evaluating irrigation systems performance

Detalhes bibliográficos
Autor(a) principal: Silva, Euzebio Medrado da
Data de Publicação: 2004
Outros Autores: Lima, Jorge Enoch Furquim Werneck, Azevedo, Juscelino Antônio de, Rodrigues, Lineu Neiva
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6833
Resumo: Mathematical models have been proposed to represent the applied irrigation water distribution profile, which is fundamental to evaluate the performance of irrigation systems. Even though there have been advances, so far, there is not a universally accepted model as the most adequate to fit water distribution profiles from irrigation systems. The objectives of this work were to propose a model for evaluating the performance of irrigation systems, and to develop an irrigation adjusting factor for calculating the gross water depth that takes into account both water application uniformity and efficiency measures. The fitting parameters of the proposed model were determined by using the routine Solver from the spreadsheet Excel and the water application uniformity and efficiency measures were calculated from mathematical expressions derived for this model. According to data from the evaluation of a center pivot irrigation system, the proposed model is adequate for analyzing irrigation performance and for obtaining the devised irrigation adjusting factor, by gathering the required system performance indicators. It also simplifies the analysis procedures and allows a direct calculation of the water depth demand for irrigation.
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spelling A mathematical model for evaluating irrigation systems performanceProposição de um modelo matemático para a avaliação do desempenho de sistemas de irrigaçãoapplication uniformity; application efficiency; distribution profileuniformidade de aplicação; eficiência de aplicação; perfil de distribuiçãoMathematical models have been proposed to represent the applied irrigation water distribution profile, which is fundamental to evaluate the performance of irrigation systems. Even though there have been advances, so far, there is not a universally accepted model as the most adequate to fit water distribution profiles from irrigation systems. The objectives of this work were to propose a model for evaluating the performance of irrigation systems, and to develop an irrigation adjusting factor for calculating the gross water depth that takes into account both water application uniformity and efficiency measures. The fitting parameters of the proposed model were determined by using the routine Solver from the spreadsheet Excel and the water application uniformity and efficiency measures were calculated from mathematical expressions derived for this model. According to data from the evaluation of a center pivot irrigation system, the proposed model is adequate for analyzing irrigation performance and for obtaining the devised irrigation adjusting factor, by gathering the required system performance indicators. It also simplifies the analysis procedures and allows a direct calculation of the water depth demand for irrigation.Modelos matemáticos têm sido utilizados para representar a distribuição dos valores de lâmina de água aplicada em uma área irrigada, informação fundamental na avaliação do desempenho de sistemas de irrigação. Apesar dos avanços, ainda não existe um modelo universalmente aceito para a descrição da distribuição dos valores de água desses sistemas. Os objetivos deste trabalho foram propor um modelo matemático para a avaliação do desempenho de sistemas de irrigação e desenvolver um fator de adequação para o cálculo da lâmina bruta a ser aplicada que agregue, em um único indicador, as medidas de uniformidade e de eficiência de aplicação de água da irrigação. Os parâmetros de ajuste do modelo proposto foram determinados por meio da rotina Solver da planilha Excel, e os indicadores de desempenho da irrigação, calculados por meio de expressões matemáticas deduzidas para uso do modelo proposto. Utilizando dados de desempenho da irrigação de um pivô-central, verificou-se que o modelo é apropriado para a análise de desempenho da irrigação e para obtenção do fator de adequação da irrigação desenvolvido, ao englobar indicadores de desempenho necessários à avaliação do sistema, simplificar os procedimentos de análise e permitir o cálculo direto da lâmina de água requerida para irrigação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSilva, Euzebio Medrado daLima, Jorge Enoch Furquim WerneckAzevedo, Juscelino Antônio deRodrigues, Lineu Neiva2004-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6833Pesquisa Agropecuaria Brasileira; v.39, n.8, ago. 2004; 741-748Pesquisa Agropecuária Brasileira; v.39, n.8, ago. 2004; 741-7481678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6833/3889info:eu-repo/semantics/openAccess2014-08-21T18:21:34Zoai:ojs.seer.sct.embrapa.br:article/6833Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-21T18:21:34Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv A mathematical model for evaluating irrigation systems performance
Proposição de um modelo matemático para a avaliação do desempenho de sistemas de irrigação
title A mathematical model for evaluating irrigation systems performance
spellingShingle A mathematical model for evaluating irrigation systems performance
Silva, Euzebio Medrado da
application uniformity; application efficiency; distribution profile
uniformidade de aplicação; eficiência de aplicação; perfil de distribuição
title_short A mathematical model for evaluating irrigation systems performance
title_full A mathematical model for evaluating irrigation systems performance
title_fullStr A mathematical model for evaluating irrigation systems performance
title_full_unstemmed A mathematical model for evaluating irrigation systems performance
title_sort A mathematical model for evaluating irrigation systems performance
author Silva, Euzebio Medrado da
author_facet Silva, Euzebio Medrado da
Lima, Jorge Enoch Furquim Werneck
Azevedo, Juscelino Antônio de
Rodrigues, Lineu Neiva
author_role author
author2 Lima, Jorge Enoch Furquim Werneck
Azevedo, Juscelino Antônio de
Rodrigues, Lineu Neiva
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Silva, Euzebio Medrado da
Lima, Jorge Enoch Furquim Werneck
Azevedo, Juscelino Antônio de
Rodrigues, Lineu Neiva
dc.subject.por.fl_str_mv application uniformity; application efficiency; distribution profile
uniformidade de aplicação; eficiência de aplicação; perfil de distribuição
topic application uniformity; application efficiency; distribution profile
uniformidade de aplicação; eficiência de aplicação; perfil de distribuição
description Mathematical models have been proposed to represent the applied irrigation water distribution profile, which is fundamental to evaluate the performance of irrigation systems. Even though there have been advances, so far, there is not a universally accepted model as the most adequate to fit water distribution profiles from irrigation systems. The objectives of this work were to propose a model for evaluating the performance of irrigation systems, and to develop an irrigation adjusting factor for calculating the gross water depth that takes into account both water application uniformity and efficiency measures. The fitting parameters of the proposed model were determined by using the routine Solver from the spreadsheet Excel and the water application uniformity and efficiency measures were calculated from mathematical expressions derived for this model. According to data from the evaluation of a center pivot irrigation system, the proposed model is adequate for analyzing irrigation performance and for obtaining the devised irrigation adjusting factor, by gathering the required system performance indicators. It also simplifies the analysis procedures and allows a direct calculation of the water depth demand for irrigation.
publishDate 2004
dc.date.none.fl_str_mv 2004-08-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6833
url https://seer.sct.embrapa.br/index.php/pab/article/view/6833
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6833/3889
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.39, n.8, ago. 2004; 741-748
Pesquisa Agropecuária Brasileira; v.39, n.8, ago. 2004; 741-748
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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