naa a22 4500 510751199 CHVBK 20180411083105.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1469-5 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1469-5 Relating Water and Air Flow Characteristics in Coarse Granular Materials [Elektronische Daten] [Rune Andreasen, Eriona Canga, Charlotte Kjaergaard, Bo Iversen, Tjalfe Poulsen] This paper investigates the connection between the velocity (V)-pressure drop (ΔP) relationships for air and water flow in coarse porous filter media with the aim of linking the V-ΔP relationships for air and water. Investigations were carried out using a common biofilter medium, Leca® consisting of rounded porous particles of 2- to 18-mm diameter. V-∆P relations for water flow were measured for 14 different Leca® particle size fractions and compared with measurements of V-∆P relations for air flow in 36 different Leca® particle size fractions (including the 14 used for water flow). The measurements showed a strong relationship between the two types of relationships, and further that this relationship could be described using a single constant. An approach for predicting the water flow V-∆P relationship from the corresponding air flow relationship across different particle size fractions from the same material is suggested, tested, and found valid for Re numbers higher than that which is considered in the presently available studies of air/water V-∆P relationships. Springer Science+Business Media Dordrecht, 2013 Air flow nationallicence Water flow nationallicence Granular porous media nationallicence Permeability nationallicence Particle size distribution nationallicence Filtration nationallicence Andreasen Rune Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000, Aalborg, Denmark aut Canga Eriona Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut Kjaergaard Charlotte Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut Iversen Bo Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut Poulsen Tjalfe Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000, Aalborg, Denmark aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1469-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1469-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Andreasen Rune Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000, Aalborg, Denmark aut NATIONALLICENCE 700 1- Canga Eriona Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut NATIONALLICENCE 700 1- Kjaergaard Charlotte Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut NATIONALLICENCE 700 1- Iversen Bo Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Aarhus, Denmark aut NATIONALLICENCE 700 1- Poulsen Tjalfe Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000, Aalborg, Denmark aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer