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Title: Large eddy simulations of 45° inclined dense jets
Authors: Jiang, Baoxin
Law, Adrian Wing-Keung
Zhao, Bing
Zhang, Shuai
Keywords: DRNTU::Engineering::Civil engineering::Water resources
Issue Date: 2015
Source: Zhang, S., Jiang, B., Law, A.-K., & Zhao, B. (2015). Large eddy simulations of 45° inclined dense jets. Environmental Fluid Mechanics, 1-21
Series/Report no.: Environmental fluid mechanics
Abstract: Submerged inclined dense jets (negatively buoyant jets) occur in many engineering applications such as brine discharges from seawater desalination plants and de-cooling water discharges from liquefied natural gas plants, and their mixing behavior needs to be examined in details for the environmental impact analysis. In the present study, a detailed numerical investigation was performed using the large eddy simulation (LES) approach with both the Smagorinsky and Dynamic Smagorinsky sub-grid scale (SGS) models to simulate the characteristics of the inclined dense jet with 45° inclination. The numerical predictions included the jet trajectory, geometrical characteristics, jet spread and eddy structures. Experimental measurements were also obtained for the validation of the LES predictions, and data from existing studies in the literature were included for comparison. Overall, the LES predictions were able to reproduce the geometric characteristics of the inclined dense jet in a satisfactory manner in most aspects. The dilution was however generally underestimated, which was attributed primarily to the inability of the SGS models to reproduce the convective mixing induced by the buoyancy-induced instability using the adopted grid spacing in the bottom half of the inclined dense jet.
ISSN: 1567-7419
DOI: 10.1007/s10652-015-9415-2
Rights: © 2015 Springer Science+Business Media Dordrecht. This is the author created version of a work that has been peer reviewed and accepted for publication by [Environmental Fluid Mechanics], [Springer Science+Business Media Dordrecht]. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [doi:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles

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