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dc.creatorPechlivanidis, G.en
dc.creatorKeramaris, E.en
dc.creatorPechlivanidis, I.en
dc.date.accessioned2015-11-23T10:45:17Z
dc.date.available2015-11-23T10:45:17Z
dc.date.issued2015
dc.identifier10.1080/14685248.2014.946605
dc.identifier.issn1468-5248
dc.identifier.urihttp://hdl.handle.net/11615/32120
dc.description.abstractLaboratory experiments are used to explore the effect of impermeable bed on the turbulent flow by using particle image velocimetry (PIV). The experiments were conducted in an open channel of 6.5 m length, 7.5 cm width and 25 cm height. Two different types of permeable bed (flexible vegetation with grass and gravel bed) with different height (2 and 6 cm) with the same porosity epsilon = 0.80 (volume of fluid over total porous medium volume) were used to represent the porous bed. These conditions can be commonly found in systems with sediment transport. Forty-eight (48) experiments were carried out for permeable beds, twenty-four (24) for flexible vegetation with grass and twenty-four (24) for gravel bed. Hydraulic characteristics such as distributions of velocities, turbulent intensities, turbulent kinetic energy and Reynolds stress are investigated. Measurements of velocity were taken for horizontal channel slope at different heights using the PIV. Results show that the kind of the bed type can significantly influence the turbulent characteristics of the flow.en
dc.source.uri<Go to ISI>://WOS:000343864600001
dc.subjectflow structureen
dc.subjectopen channel flowen
dc.subjectparticle image velocimetryen
dc.subjectriveren
dc.subjectbedsen
dc.subjectroughnessen
dc.subjectSUBMERGED FLEXIBLE VEGETATIONen
dc.subjectOPEN-CHANNEL FLOWen
dc.subjectRESISTANCEen
dc.subjectMechanicsen
dc.subjectPhysics, Fluids & Plasmasen
dc.titleExperimental study of the effects of grass vegetation and gravel bed on the turbulent flow using particle image velocimetryen
dc.typejournalArticleen


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