NDLI: Scalar transport from point sources in the flow around a finite-height cylinder

Content Provider	Springer Nature Link
Author	Palau Salvador, Guillermo García Villalba, Manuel Rodi, Wolfgang
Copyright Year	2010
Abstract	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.
Starting Page	611
Ending Page	625
Page Count	15
File Format	PDF
ISSN	15677419
Journal	Environmental Fluid Mechanics
Volume Number	11
Issue Number	6
e-ISSN	15731510
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-11-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	LES Scalar transport Finite-height cylinder Environmental Physics Oceanography Mechanics Hydrogeology Meteorology/Climatology
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Water Science and Technology

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