Artículos de revistas
Application Of A Vertical Wind Tunnel To Evaluate Flow Lines Generated By Sand Filters Underdrains [aplicação De Túnel De Vento Na Avaliação De Linhas De Fluxo Geradas Por Crepinas De Filtros De Areia]
Registro en:
Engenharia Agricola. , v. 33, n. 3, p. 548 - 559, 2013.
1006916
10.1590/S0100-69162013000300011
2-s2.0-84883826643
Autor
dos santos M.B.
Mesquita M.
Testezlaf R.
Institución
Resumen
Looking for technical information to improve the hydraulic efficiency in sand filters during the filtering and backwash processes, this project had the objective to evaluate a teaching wind tunnel as a reliable method to visualize and characterize flow lines distribution generated by the interaction of a specific model of underdrain with different flow velocities.The experiment was performed by installing a commercial underdrain model, cylinder type, in an experimental section specially constructed to be coupled to a vertical wind tunnel.Three flow rate values were simulated in the tunnel, obtaining high-speed photographs.The obtained images were treated to highlight the flow lines distribution and preferred flow pathways for the filtration and backwash processes.The wind tunnel operating range was correlated by similarity with values of water flow rate in filtration processes carried out in commercial sand filters with diameters of 40, 60 and 100 cm.The obtained results validated the proposed methodology, allowing the visualization and analysis of the underdrain geometry effects on the generated flow lines, for both filtration and backwash processes. 33 3 548 559 Azevedo Neto, J.M., (1998) Manual de hidráulica, p. 669. , São Paulo: Edgar Blucher Burt, C.M., (2010) Hydraulics of commercial sand media filters tanks used for agricultural drip irrigation: criteria for energy efficiency, , www.itrc.org/reports/mediafilters.htm, San Luis Obispo: Irrigation Training and Research Center, [2010] (Report R10-001).Acesso em: [20] set Cararo, D.C., Botrel, T.A., Uso de cloração e ar comprimido no controle do entupimento de gotejadores ocasionado pela aplicação de água residuária (2007) Engenharia Agrícola, Jaboticabal, 27 (2), pp. 336-345 Gomes, A.W.A., Frizzone, A., Neto, O.R., Miranda, J.H., Perda de carga localizada em gotejadores integrados em tubos de polietileno (2010) Engenharia Agrícola, Jaboticabal, 30 (3), pp. 435-446 Mailapalli, D.R., Marques, A.A., Thomas, K.J., Performance evaluation of hydrocyclone filter for microirrigatio (2007) Engenharia Agrícola, Jaboticabal, 27 (2), pp. 373-382 Matos, A.T., Magalhães, M.A., Sarmento, A., Perda de carga em filtros orgânicos utilizados no tratamento de água residuária de suinoculturas (2010) Engenharia Agrícola, Jaboticabal, 30 (3), pp. 527-537 Mesquita, M., Testezlaf, R., Ramirez, J.C.S., The effect of media bed characteristics and internal auxiliary elements on sand filter head loss (2012) Agricultural Water Management, Amsterdam, 115, pp. 178-185 Mises, R.V., Prager, W., Kuertti, G., Theory of flight NewYork: Dover Publication, 1945, , [636] Mueller, T.J., History of smoke visualization in wind tunnels (1983) Astronautics and Aeronautics, 1, pp. 50-54. , New York Pizarro Cabelo, F., Riegos localizados de alta frecuencia (1996) Madrid: Ediciones Mundi-Prensa, p. 511 Ramirez, J.C.S., (2010), Efeito das características granulométricas e da altura da camada filtrante no processo de retrolavagem em filtros de areia.2010.159 f.Dissertação (Mestrado em Água e Solo) - Faculdade de Engenharia Agrícola, Universidade Estadual de Campinas CampinasRibeiro, A.A., Coelho, R.D., Teixeira, M.B., (2010) Entupimento de tubos gotejadores convencionais com aplicação de cloreto de potássio (branco e vermelho) via duas qualidades de água.Engenharia Agrícola, Jaboticabal, 30 (2), pp. 279-287 Ribeiro, T.A., Airoldi, R.S., Paterniani, J.E.S., Silva, M.J.M., Variação temporal da qualidade da água no desempenho de filtros utilizados na irrigação por gotejamento (2005) Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, 9 (4), pp. 450-456 Salcedo, J.C., Testezlaf, R., Mesquita, M., Processo da retrolavagem em filtros de areia usados na irrigação localizada (2011) Engenharia Agrícola, Jaboticabal, 31 (6), pp. 1226-1237 Sham Dol, S., Mohd Nor, M.A., Kamaruzaman, M.K., An improved smoke-wire flow visualization technique (2006) Proceedings., 4, pp. 231-236. , International Conference On Fluid Mechanics And Aerodynamics Elounda. Greece: WSEAS (2010), http://www.tecquipment.com/Aerodynamics/Subsonic/AF10.aspx, TECQUIPMENT.Modular Airflow Bench AF10.Acesso em: 25 juTestezlaf, R., Filtros de areia aplicados à irrigação localizada: teoria e prática (2008) Engenharia Agrícola, Jaboticabal, 28 (3), pp. 604-613 Vermerein, L., Jobling, G.A., (1984) Localized irrigatio Rome: FAO, p. 203. , (Irrigation and Drainageaper 36)