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Journal of Porous Media
Impact-faktor: 1.49 5-jähriger Impact-Faktor: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v13.i2.80
pages 183-193

COMPARISON BETWEEN DIFFERENT POROUS BED (POROUS FILTER AND RODS BUNDLE) IN OPEN CHANNELS

Evangelos Keramaris
Division of Hydraulic and Environmental Engineering, Department of Civil Engineering, University of Thessaly, Pedion Areos, 38334, Volos, Greece

ABSTRAKT

In this study the characteristics of turbulent flow in an open channel with porous bed are studied experimentally with the use of hot-film anemometry. Experiments were carried out with two types of porous bed with the same porosity, ε = 0.85: (a) porous filter and (b) rods bundle. The main emphasis is given to the effects of relative porous thickness s/h (s = porous thickness, h = total flow depth) on the flow characteristics over the porous bed. The relative thickness s/h varies between 0.524 and 0.647. Measurements of mean velocity and turbulence characteristics (Reynolds stresses) indicate the effects of the bed material used on the flow characteristics.


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