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Publications (11)
Periodic winds acting on a stratified waterbody can amplify normal modes of motion and enhance the basin-scale circulation via resonance. Here, we use idealized large-eddy simulations to investigate the flow features and quantify the horizontal transport in periodically wind-forced stratified basins. Motivated by observations in lakes, we focus on...
This paper presents a 3-D, non-hydrostatic, Reynolds-Averaged Navier-Stokes (RANS) model using the volume of fluid (VOF) approach to simulate dam-break flows. Good agreement is observed between the 3-D model predictions and results of dam-break experiments performed in the laboratory. The 3-D model is then applied to predict flood-wave propagation...
Confluences are locations of complex hydrodynamic conditions within river systems. The effects on hydrodynamics and mixing of temperature‐induced density differences between incoming flows are investigated at a small‐size, concordant bed confluence. To evaluate density effects, results of eddy‐resolving simulations for a densimetric Froude number F...
Well-resolved detached eddy simulation (DES) and unsteady Reynold-averaged Navier–Stokes (URANS) simulations are conducted for a water pump-intake bay. Three cases are analysed: a high-submergence, low discharge case (Case 1), a low-submergence, low-discharge case (Case 2) and a low-submergence, high-discharge case (Case 3). The numerical model use...
We report novel results of a numerical experiment designed for examining the basin-scale hydrodynamics that control the mass, momentum, and energy distribution in a daily wind-forced, small thermally-stratified basin. For this purpose, the 3-D Boussinesq equations of motion were numerically solved using large-eddy simulation (LES) in a simplified (...
This paper discusses development and validation of a 3-D, non-hydrostatic, Reynolds-Averaged Navier–Stokes (RANS) model using the Volume of Fluid (VOF) approach to simulate flooding events in natural environments. A series of validation simulations in simple and complex geometries are performed to test the different modules of the flow solver. The...
The paper discusses the application of a fully 3-D, non-hydrostatic, RANS model with deformable free-surface capabilities to several main types of flood-related engineering problems. The model is found to accurately simulate the dam break flow developing in a 900 open channel bend for which detailed validation data from a laboratory experiment are...
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Madre de Dios is the most degraded region in the Amazon rainforest due to extensive ASGM activities. However, the effect on river geomorphic processes still remain largely unknown. We here aim to augment the knowledge on the impacts of ASGM on river morphodynamics, sediment transport and, consequently, mercury dispersion, in the Madre de Dios Basin for more efficient river monitoring and mitigation strategies.
