Lock-release gravity currents propagating over roughness elements

MR Maggi, C Adduce, ME Negretti - Environmental Fluid Mechanics, 2022 - Springer
The influence of bottom roughness on the development of lock-release gravity currents is
investigated through laboratory experiments using Particle Image Velocimetry. The bottom …

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 …

Fluid experiments on the dump bailing method in the plug and abandonment of oil and gas wells

S Akbari, SM Taghavi - Journal of Petroleum Science and Engineering, 2021 - Elsevier
Plug and abandonment (P&A) operations prevent oil and gas leakages from hydrocarbon
zones to different formations, freshwater underground resources, and the surface. Cement …

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 …

Uncertainty of propagation and entrainment characteristics of lock-exchange gravity current

Y Yuan, D Han, Z He, J Xiong, J Zhang… - Environmental Fluid …, 2023 - Springer
In this study, repeated lock-exchange experiments under well-controlled conditions were
carried out to evaluate the uncertainty of the macro-propagation and entrainment process …

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 …

Gravity currents propagating at the base of a linearly stratified ambient

A Dai, YL Huang, YM Hsieh - Physics of Fluids, 2021 - pubs.aip.org
Gravity currents produced from a full-depth lock release propagating at the base of a linearly
stratified ambient are investigated by means of newly conducted three-dimensional high …

Gravity currents from a constant inflow on unbounded uniform slopes

CS Wu, A Dai - Journal of Hydraulic Research, 2023 - Taylor & Francis
In this study we conducted laboratory experiments to examine the gravity currents produced
from a constant inflow propagating on unbounded uniform slopes in the range 0∘≤ θ≤ …

Mixing, entrainment and energetics of gravity currents released from two-layer stratified locks

R Zhu, Z He, E Meiburg - Journal of Fluid Mechanics, 2023 - cambridge.org
We conduct three-dimensional direct numerical simulations to investigate the mixing,
entrainment and energy budgets of gravity currents emerging from two-layer stratified locks …