Gravity currents from moving sources

R Ouillon, C Kakoutas, E Meiburg… - Journal of Fluid …, 2021 - cambridge.org
Emerging technologies such as deep-sea mining and geoengineering pose fundamentally
new questions regarding the dynamics of gravity currents. Such activities can continuously …

Turbulence characteristics and mixing properties of gravity currents over complex topography

MR Maggi, ME Negretti, EJ Hopfinger, C Adduce - Physics of Fluids, 2023 - pubs.aip.org
Understanding gravity currents developing on complex topography, which involve
turbulence and mixing processes on a wide range of spatial and temporal scales, is of …

On the dynamics of quasi-steady gravity currents flowing up a slope

MC De Falco, C Adduce, ME Negretti… - Advances in Water …, 2021 - Elsevier
Quasi-steady gravity currents propagating first on a horizontal and then up a sloping
boundary are investigated by means of theoretical analysis and laboratory experiments. The …

High-fidelity simulations of gravity currents using a high-order finite-difference spectral vanishing viscosity approach

RAS Frantz, G Deskos, S Laizet, JH Silvestrini - Computers & Fluids, 2021 - Elsevier
This numerical work investigates the potential of a high-order finite-difference spectral
vanishing viscosity approach to simulate gravity currents at high Reynolds numbers. The …

Experimental study on the vertical motion of colliding gravity currents

SU Okon, Q Zhong, Z He - Physics of Fluids, 2021 - pubs.aip.org
Predicting the consequences of colliding gravity currents remains one of the most significant
challenges in geophysical fluid dynamics. While the collision phenomenon has long been …

Intruding gravity currents and re-circulation in a rotating frame: Laboratory experiments

ME Negretti, FL Tucciarone, A Wirth - Physics of Fluids, 2021 - pubs.aip.org
We present experimental results of rotating downslope gravity currents performed at the
Coriolis Platform in Grenoble, France. A novel experimental design to produce the …

Numerical experiments of partial-depth colliding gravity currents using LES

A Kokkinos, P Prinos - Environmental Fluid Mechanics, 2022 - Springer
The collision of two opposing, horizontal gravity currents is investigated numerically using
Large Eddy Simulation (LES). The classical lock-exchange configuration is considered for …

On the initial down-slope propagation of a lock-release particle-driven gravity current: shallow-water predictions and comparisons with previously published data

M Ungarish - Journal of Fluid Mechanics, 2024 - cambridge.org
We consider the initial 'slumping phase'of a lock-release gravity current (GC) on a down
slope with focus on particle-driven (turbidity) flows, in the inertia–buoyancy (large Reynolds …

Simultaneous velocity–density measurements of downslope density clouds

ME Negretti, A Martin, F Naaim-Bouvet - Advances in Water Resources, 2022 - Elsevier
We present results from laboratory experiments of the downslope propagation of a finite
volume released gravity current by means of combined PIV/PLIF measurements. The …

On the definition, evolution, and properties of the outer edge of gravity currents: A direct-numerical and large-eddy simulation study

JS Salinas, S Balachandar, SL Zúñiga… - Physics of …, 2023 - pubs.aip.org
Gravity currents are flows driven by the action of gravity over fluids with different densities.
Here, we focus on gravity currents where heavier fluid travels along the bottom of a sloping …