Assessment of Different Pressure Drop-Flow Rate Equations in a Pressurized Porous Media Filter for Irrigation Systems
dc.contributor.author
dc.date.accessioned
2021-09-07T11:21:25Z
dc.date.available
2021-09-07T11:21:25Z
dc.date.issued
2021-08-09
dc.identifier.uri
dc.description.abstract
The small open area available at the slots of underdrains in pressurized granular bed filters for drip irrigation implies: (1) the existence of a region with non-uniform flow, and (2) local values of modified particle Reynolds number >500. These flow conditions may disagree with those accepted as valid for common pressure drop-flow rate correlations proposed for packed beds. Here, we carried out detailed computational fluid dynamics (CFD) simulations of a laboratory filter to analyze the results obtained with five different equations of head losses in porous media: (1) Ergun, (2) Darcy-Forchheimer, (3) Darcy, (4) Kozeny-Carman and (5) power function. Simulations were compared with experimental data at different superficial velocities obtained from previous studies. Results for two silica sand media indicated that all equations predicted total filter pressure drop values within the experimental uncertainty range when superficial velocities <38.3 m h−1. At higher flow rates, Ergun equation approximated the best to the observed results for silica sand media, being the expression recommended. A simple analytical model of the pressure drop along flow streamlines that matched CFD simulation results was developed
dc.description.sponsorship
This research was funded by the Spanish Research Agency and the European Regional Development Fund through Grant RTI2018-094798-B-100
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
MDPI (Multidisciplinary Digital Publishing Institute)
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.3390/w13162179
dc.relation.ispartof
Water, 2021, vol. 13, núm. 6, p. 2179
dc.relation.ispartofseries
Articles publicats (D-EQATA)
dc.rights
Attribution 4.0 International (CC BY 4.0)
dc.rights.uri
dc.source
Graciano-Uribe, Jonathan Pujol i Sagaró, Toni Puig Bargués, Jaume Duran i Ros, Miquel Arbat Pujolràs, Gerard Ramírez de Cartagena Bisbe, Francisco 2021 Assessment of Different Pressure Drop-Flow Rate Equations in a Pressurized Porous Media Filter for Irrigation Systems Water 13 6 2179
dc.subject
dc.title
Assessment of Different Pressure Drop-Flow Rate Equations in a Pressurized Porous Media Filter for Irrigation Systems
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/publishedVersion
peer-reviewed
dc.identifier.doi
dc.identifier.idgrec
033686
dc.identifier.eissn
2073-4441