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dc.contributor.authorKalra, Tarandeep S.  Concept link
dc.contributor.authorLi, Xiangyu  Concept link
dc.contributor.authorWarner, John C.  Concept link
dc.contributor.authorGeyer, W. Rockwell  Concept link
dc.contributor.authorWu, Hui  Concept link
dc.date.accessioned2020-02-21T19:07:07Z
dc.date.available2020-02-21T19:07:07Z
dc.date.issued2019-09-26
dc.identifier.citationKalra, T. S., Li, X., Warner, J. C., Geyer, W. R., & Wu, H. (2019). Comparison of physical to numerical mixing with different tracer advection schemes in estuarine environments. Journal of Marine Science and Engineering, 7(10), 338.en_US
dc.identifier.urihttps://hdl.handle.net/1912/25411
dc.description© The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Kalra, T. S., Li, X., Warner, J. C., Geyer, W. R., & Wu, H. Comparison of physical to numerical mixing with different tracer advection schemes in estuarine environments. Journal of Marine Science and Engineering, 7(10), (2019): 338, doi: 10.3390/jmse7100338.en_US
dc.description.abstractThe numerical simulation of estuarine dynamics requires accurate prediction for the transport of tracers, such as temperature and salinity. During the simulation of these processes, all the numerical models introduce two kinds of tracer mixing: (1) by parameterizing the tracer eddy diffusivity through turbulence models leading to a source of physical mixing and (2) discretization of the tracer advection term that leads to numerical mixing. Physical and numerical mixing both vary with the choice of horizontal advection schemes, grid resolution, and time step. By simulating four idealized cases, this study compares the physical and numerical mixing for three different tracer advection schemes. Idealized domains only involving physical and numerical mixing are used to verify the implementation of mixing terms by equating them to total tracer variance. Among the three horizontal advection schemes, the scheme that causes the least numerical mixing while maintaining a sharp front also results in larger physical mixing. Instantaneous spatial comparison of mixing components shows that physical mixing is dominant in regions of large vertical gradients, while numerical mixing dominates at sharp fronts that contain large horizontal tracer gradients. In the case of estuaries, numerical mixing might locally dominate over physical mixing; however, the amount of volume integrated numerical mixing through the domain compared to integrated physical mixing remains relatively small for this particular modeling system.en_US
dc.description.sponsorshipThis study was funded through the Coastal Model Applications and Field Measurements Project and the Cross-shore and Inlets Project, US Geological Survey Coastal Marine Hazards and Resources Program.en_US
dc.publisherMDPIen_US
dc.relation.urihttps://doi.org/10.3390/jmse7100338
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectphysical mixingen_US
dc.subjectnumerical mixingen_US
dc.subjectadvection schemesen_US
dc.subjectestuarine mixingen_US
dc.titleComparison of physical to numerical mixing with different tracer advection schemes in estuarine environmentsen_US
dc.typeArticleen_US
dc.identifier.doi10.3390/jmse7100338


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International