Imperial College London
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ProfessorSylvainLaizet

Faculty of Engineering, Department of Aeronautics

Professor in Computational Fluid Mechanics
 
 
 
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Contact

 

+44 (0)20 7594 5045s.laizet Website

 
 
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Location

 

339City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Schuch:2018:10.1029/2018JC014027,
author = {Schuch, FN and Pinto, LC and Silvestrini, JH and Laizet, S},
doi = {10.1029/2018JC014027},
journal = {Journal of Geophysical Research: Oceans},
pages = {4820--4832},
title = {Threedimensional turbulenceresolving simulations of the plunge phenomenon in a tilted channel},
url = {http://dx.doi.org/10.1029/2018JC014027},
volume = {123},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Hyperpycnal flows are produced when the density of a fluid flowing in a relatively quiescent basin is greater than the density of the fluid in the basin. The density differences can be due to the difference in temperatures, salinity, turbidity, concentration, or a combination of them. When the inflow momentum diminishes, the inflowing fluid eventually plunges under the basin fluid and flows along the bottom floor as an underflow density current. In the present work, 3D turbulenceresolving simulations are performed for an hyperpycnal flow evolving at the bottom floor of a tilted channel. Using advanced numerical techniques designed for supercomputers, the incompressible NavierStokes and transport equations are solved to reproduce numerically the experiments of Lamb et al. (2010, https://doi.org/10.1130/B30125.1) obtained inside a flume with a long tilted ramp. This study focuses on presenting and validating a new numerical framework for the correct reproduction and analysis of the plunge phenomenon and its associated flow features. A very good agreement is found between the experimental data of Lamb et al. (2010), the analytical models of Parker and Toniolo (2007, https://doi.org/10.1061/(ASCE)0733-9429(2007)133:6(690)), and the present turbulenceresolving simulations. The mixing process between the ambient fluid and the underflow density current is also analyzed thanks to visualizations of vortical structures at the interface.
AU  - Schuch,FN
AU  - Pinto,LC
AU  - Silvestrini,JH
AU  - Laizet,S
DO  - 10.1029/2018JC014027
EP  - 4832
PY  - 2018///
SN  - 2169-9275
SP  - 4820
TI  - Threedimensional turbulenceresolving simulations of the plunge phenomenon in a tilted channel
T2  - Journal of Geophysical Research: Oceans
UR  - http://dx.doi.org/10.1029/2018JC014027
UR  - https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JC014027
UR  - http://hdl.handle.net/10044/1/61063
VL  - 123
ER  -
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