Modeling gravity and turbidity currents: computational approaches and challenges

E Meiburg, S Radhakrishnan… - Applied …, 2015 - asmedigitalcollection.asme.org
In this review article, we discuss recent progress with regard to modeling gravity-driven, high
Reynolds number currents, with the emphasis on depth-resolving, high-resolution …

Flows over periodic hills of parameterized geometries: A dataset for data-driven turbulence modeling from direct simulations

H Xiao, JL Wu, S Laizet, L Duan - Computers & Fluids, 2020 - Elsevier
Computational fluid dynamics models based on Reynolds-averaged Navier–Stokes
equations with turbulence closures still play important roles in engineering design and …

[HTML][HTML] Xcompact3D: An open-source framework for solving turbulence problems on a Cartesian mesh

P Bartholomew, G Deskos, RAS Frantz, FN Schuch… - SoftwareX, 2020 - Elsevier
Xcompact3D is a Fortran 90–95 open-source framework designed for fast and accurate
simulations of turbulent flows, targeting CPU-based supercomputers. It is an evolution of the …

Physical processes controlling mud depocenter development on continental shelves–geological, oceanographic, and modeling concepts

L Porz, W Zhang, TJJ Hanebuth, C Schrum - Marine Geology, 2021 - Elsevier
Mud depocenters (MDCs) represent major proximal-marine sinks for fine-grained
terrigenous material, carbon, and contaminants on modern continental shelves. Throughout …

Turbidity currents interacting with three-dimensional seafloor topography

MM Nasr-Azadani, E Meiburg - Journal of Fluid Mechanics, 2014 - cambridge.org
Direct numerical simulations are employed to investigate the interactions of bidisperse
turbidity currents with three-dimensional seafloor topography in the form of Gaussian bumps …

Fluid-particle interaction regimes during the evolution of turbidity currents from a coupled LES/DEM model

J Xie, P Hu, T Pähtz, Z He, N Cheng - Advances in Water Resources, 2022 - Elsevier
In this paper, fluid-particle interactions in lock-exchange turbidity currents (TCs) over a flat
bed are investigated using a model combining LES and DEM (Large-Eddy Simulation and …

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 …

Residual-based variational multi-scale modeling for particle-laden gravity currents over flat and triangular wavy terrains

S Xu, N Liu, J Yan - Computers & Fluids, 2019 - Elsevier
In this paper, a numerical formulation for simulating dilute particle-laden gravity currents at
large Reynolds number (Re) is developed using a residual-based variational multi-scale …

[HTML][HTML] The effect of Schmidt number on gravity current flows: The formation of large-scale three-dimensional structures

CR Marshall, RM Dorrell, S Dutta, GM Keevil… - Physics of …, 2021 - pubs.aip.org
The Schmidt number, defined as the ratio of scalar to momentum diffusivity, varies by
multiple orders of magnitude in real-world flows, with large differences in scalar diffusivity …

A high order finite difference solver for simulations of turbidity currents with high parallel efficiency

Z Gong, G Deng, C An, Z Wu, X Fu - Computers & Mathematics with …, 2022 - Elsevier
We present a high order finite difference solver, ParaTC, for the direct numerical simulations
of turbidity currents with canonical turbulent channel configuration (periodic boundary …