Abstract
This study was partially funded by the Ministry of Economy and Competitiveness (MINECO) under research project TRA2011-28900 (PLVMA3D). B. Perez-Diaz would like to thank MINECO for providing funding under the FPI Program (research fellowship, reference number BES-2012-053693) and the Coasts and Ocean Group of HRWallingford for their assistance with numerical tasks.
Highlights
Bottom density-driven flows, which are generally referred to as density or gravity currents, are continuous underflows that travel downslope due to their negatively buoyant characteristics, i.e., because they are heavier than the surrounding fluid
These spatial and temporal quantities are normalized by the characteristic length and time scales of plume-like behavior flows
As the constant model only uses ν tv as a calibration parameter and as the results presented in Fig. 6 for ν tv 1⁄4 ν th =10 are its best results, we focus on the κ-ε TCMv
Summary
Bottom density-driven flows, which are generally referred to as density or gravity currents, are continuous underflows that travel downslope due to their negatively buoyant characteristics, i.e., because they are heavier than the surrounding fluid. This phenomenon occurs widely in natural environments and is caused by either human activities or natural processes (Simpson 1997; Huppert 2006). Hodges et al (2011) make an analogy between the behavior of a natural salt wedge and such brine discharges into shallow waters, both of which are governed by the density difference, by the hydrodynamics of the surrounding area (Shao et al 2008), and by the bottom slope.
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