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Characterization of venturi injector using dimensional analysis AGRIAMBI
Sobenko,Luiz R.; Frizzone,José A.; Camargo,Antonio P. de; Saretta,Ezequiel; Rocha,Hermes S. da.
ABSTRACT Venturi injectors are commonly employed for fertigation purposes in agriculture, in which they draw fertilizer from a tank into the irrigation pipeline. The knowledge of the amount of liquid injected by this device is used to ensure an adequate fertigation operation and management. The objectives of this research were (1) to carry out functional tests of Venturi injectors following requirements stated by ISO 15873; and (2) to model the injection rate using dimensional analysis by the Buckingham Pi theorem. Four models of Venturi injectors were submitted to functional tests using clean water as motive and injected fluid. A general model for predicting injection flow rate was proposed and validated. In this model, the injection flow rate depends on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Buckinghan Pi theorem; Irrigation equipment; Fertigation.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700484
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