caa a22 4500 44587452X CHVBK 20180317145523.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10652-010-9199-3 doi (NATIONALLICENCE)springer-10.1007/s10652-010-9199-3 Scalar transport from point sources in the flow around a finite-height cylinder [Elektronische Daten] [Guillermo Palau-Salvador, Manuel García-Villalba, Wolfgang Rodi] This paper presents a large eddy simulation of mass transfer in the flow around a surface-mounted finite-height circular cylinder. The study was carried out for a cylinder with height-to-diameter ratio of 2.5 and a Reynolds number based on the cylinder diameter of 44000. The approach flow boundary layer had a thickness of about 10% of the cylinder height. A tracer was released at various levels upstream of the cylinder. The effect of the release position in the subsequent spreading and dilution of the plumes is analyzed. It is found that a tracer released at the top or at mid-height is entrained into the recirculation zone behind the cylinder, and therefore presents similar plume evolution in the far wake in both cases. If the tracer is released at around three-quarters of the height of the cylinder, it is not significantly entrained by the main recirculation region, leading to smaller rates of spreading of the plume. Finally, if the tracer is released near the floor, the plume is entrained by the horseshoe vortex that wraps around the cylinder, leading to a large lateral spreading of the plume, remaining always near the floor. Springer Science+Business Media B.V., 2010 LES nationallicence Scalar transport nationallicence Finite-height cylinder nationallicence Palau-Salvador Guillermo Department of Rural Engineering, Polytechnical University of Valencia, Valencia, Spain aut García-Villalba Manuel Institute of Hydromechanics, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany aut Rodi Wolfgang Institute of Hydromechanics, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany aut Environmental Fluid Mechanics Springer Netherlands 11/6(2011-12-01), 611-625 1567-7419 11:6<611 2011 11 10652 https://doi.org/10.1007/s10652-010-9199-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10652-010-9199-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Palau-Salvador Guillermo Department of Rural Engineering, Polytechnical University of Valencia, Valencia, Spain aut NATIONALLICENCE 700 1- García-Villalba Manuel Institute of Hydromechanics, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany aut NATIONALLICENCE 700 1- Rodi Wolfgang Institute of Hydromechanics, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany aut NATIONALLICENCE 773 0- Environmental Fluid Mechanics Springer Netherlands 11/6(2011-12-01), 611-625 1567-7419 11:6<611 2011 11 10652 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer