An Extension of Gmunu: General-relativistic Resistive Magnetohydrodynamics Based on Staggered-meshed Constrained Transpo...
status: published
The challenge to pass from shallow water flows to sediment transport and bed evolution in a coupled 1D/2D model
Sediment transport is present in the river flows at all stages and may cause a change of the shape of the bed with consequences on the flowing conditions. The finer part of the sediments is carried by the flow in the whole water column while the coarser one stays close to the bed. Except strong variations of hydraulic parameters, the finer sediment...
A method for coupling 1D and 2D models used to simulate floods and its application to the Niger inner delta
For calculating flood hazard, 2-D models are more and more used replacing 1-D models because they permit to obtain a detailed view of the flooding patterns. However, a 2-D calculation on large areas remains time consuming. Thus, one alternative consists in coupling 1-D and 2-D models. Often, the 1-D model is dedicated to the areas such as the river...
Finite element methods for fourth order axisymmetric geometric evolution equations
Fourth order curvature driven interface evolution equations frequently appear in the natural sciences. Often axisymmetric geometries are of interest, and in this situation numerical computations are much more efficient. We will introduce and analyze several new finite element schemes for fourth order geometric evolution equations in an axisymmetric...
Comparison of various CFD codes for les simulations of turbomachinery: from inviscid vortex convection to multi-stage co...
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Some possible future High Fidelity CFD codes for LES simulation of turbomachinery are compared on several test cases increasing in complexity , starting from a very simple inviscid Vortex Convection to a multistage axial experimental compressor. Simulations were performed between 2013 and 2016 b y major Safran partners (Cenaero, Cerfacs, CORIA and ...
Fluid simulations of plasma turbulence at ion scales: comparison with Vlasov-Maxwell simulations
Comparisons are presented between a hybrid Vlasov-Maxwell (HVM) simulation of turbulence in a collisionless plasma and fluid reductions. These include Hall-magnetohydrodynamics (HMHD) and Landau fluid (LF) or FLR-Landau fluid (FLR-LF) models that retain pressure anisotropy and low-frequency kinetic effects such as Landau damping and, for the last m...
The Lagrangian coordinate system and what it means for two-dimensional crowd flow models
A continuum crowd flow model is solved using the Lagrangian coordinate system. The system has proven to give computational advantages over the traditional Eulerian coordinate system for (one- dimensional) road traffic flow. Our extension of the model and simulation method to (two- dimensional) crowd flow paves the way to explore the advantages for ...
Summertime moisture transport over Southeastern South America and extratropical cyclones behavior during inter-El Nio ev...
CLARIS
Summertime moisture transport over Southeastern South America and extratropical cyclones behavior during inter-El Nio ev...
CLARIS
Summertime moisture transport over Southeastern South America and extratropical cyclones behavior during inter-El Nio ev...
CLARIS
