Wind Shielding Impacts on Water Quality in an Urban Reservoir

Zikun Xing, Lloyd H.C. Chua, Haiyan Miao, Jörg Imberger, Peipei Yang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This study applied an atmospheric Computational Fluid Dynamics (CFD) model and a three-dimensional hydrodynamic-ecological lake model to investigate the impacts of variable wind forcing on lake hydrodynamics and water quality. The CFD model was used to predict the wind field over the lake surface which served as the meteorological forcing for the lake model. The study was carried out for the Marina Reservoir in downtown Singapore where field measurements of the wind field showed that temporal and spatial differences in wind field were found to be significant. By comparing simulations using uniform and spatially variable wind inputs in terms of thermal stratification, Richardson number, vorticity, and spatial gradients, this study demonstrates that the variability in wind forcing in urban lakes that arise from shielding and seasonal effects can have significant impacts on the hydrodynamics and water quality in the reservoir.

Original languageEnglish
Pages (from-to)3549-3561
Number of pages13
JournalWater Resources Management
Volume32
Issue number11
Early online date21 Jun 2018
DOIs
Publication statusPublished - Sep 2018

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Shielding
Water quality
Lakes
water quality
wind field
lake
hydrodynamics
wind forcing
computational fluid dynamics
Hydrodynamics
Dynamic models
Computational fluid dynamics
Richardson number
Thermal stratification
Marinas
marina
vorticity
Vorticity
stratification
simulation

Cite this

Xing, Z., Chua, L. H. C., Miao, H., Imberger, J., & Yang, P. (2018). Wind Shielding Impacts on Water Quality in an Urban Reservoir. Water Resources Management, 32(11), 3549-3561. https://doi.org/10.1007/s11269-018-1980-y
Xing, Zikun ; Chua, Lloyd H.C. ; Miao, Haiyan ; Imberger, Jörg ; Yang, Peipei. / Wind Shielding Impacts on Water Quality in an Urban Reservoir. In: Water Resources Management. 2018 ; Vol. 32, No. 11. pp. 3549-3561.
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Xing, Z, Chua, LHC, Miao, H, Imberger, J & Yang, P 2018, 'Wind Shielding Impacts on Water Quality in an Urban Reservoir', Water Resources Management, vol. 32, no. 11, pp. 3549-3561. https://doi.org/10.1007/s11269-018-1980-y

Wind Shielding Impacts on Water Quality in an Urban Reservoir. / Xing, Zikun; Chua, Lloyd H.C.; Miao, Haiyan; Imberger, Jörg; Yang, Peipei.

In: Water Resources Management, Vol. 32, No. 11, 09.2018, p. 3549-3561.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Wind Shielding Impacts on Water Quality in an Urban Reservoir

AU - Xing, Zikun

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AU - Imberger, Jörg

AU - Yang, Peipei

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AB - This study applied an atmospheric Computational Fluid Dynamics (CFD) model and a three-dimensional hydrodynamic-ecological lake model to investigate the impacts of variable wind forcing on lake hydrodynamics and water quality. The CFD model was used to predict the wind field over the lake surface which served as the meteorological forcing for the lake model. The study was carried out for the Marina Reservoir in downtown Singapore where field measurements of the wind field showed that temporal and spatial differences in wind field were found to be significant. By comparing simulations using uniform and spatially variable wind inputs in terms of thermal stratification, Richardson number, vorticity, and spatial gradients, this study demonstrates that the variability in wind forcing in urban lakes that arise from shielding and seasonal effects can have significant impacts on the hydrodynamics and water quality in the reservoir.

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