65 citations · 222 across the 10 of their papers we have counts for
10 papers
On the concentration distribution in turbulent thermals
Ludovic Huguet, Victor Lherm, Renaud Deguen +2
Turbulent thermals emerge in a wide variety of geophysical and industrial flows, such as atmospheric cumulus convection and pollutant dispersal in oceans and lakes. When a buoyant…
A Unified Theory for Chaotic Mixing in Porous Media: from Pore Networks to Granular Systems
Daniel Lester, Joris Heyman, Yves Meheust +1
Recent studies have revealed the central role of chaotic stretching and folding at the pore scale in controlling mixing within porous media, whether the solid phase is discrete (as…
Dispersion versus diffusion in mixing fronts
Gauthier Rousseau, Satoshi Izumoto, Tanguy Le Borgne +1
Mixing fronts form when fluids with different chemical compositions are brought into contact. They influence a large range of biogeochemical processes in hydrological systems. An i…
Mixing as a correlated aggregation process
Joris Heyman, Tanguy Le Borgne, Philippe Davy +1
Mixing describes the process by which solutes evolve from an initial heterogeneous state to uniformity under the stirring action of a fluid flow. Fluid stretching forms thin scalar…
Impact of pore-scale chaotic mixing on Darcy-scale reaction rates
Satoshi Izumoto, Gauthier Rousseau, Tanguy Le Borgne +1
Prediction of reactive transport in porous media remains challenging when pore scale incomplete mixing is at play. Previous experimental studies investigated chemical reactions in…
Scalar signatures of chaotic mixing in porous media
Heyman J., Lester D., Le Borgne T
Steady laminar flows through porous media spontaneously generate Lagrangian chaos at pore scale, with qualitative implications for a range of transport, reactive and biological pro…
Signature of coalescence during scalar mixing in a Rankine vortex
Sabyasachi Sen, Prajwal, Joris Heyman +2
We analyze the dynamics of solute mixing in a vortex flow. The transport of a passive tracer is considered in a Rankine vortex. The action of a shear flow, in general, is to achiev…
Statistics of bedload transport over steep slopes: Separation of time scales and collective motion
J. Heyman, F. Mettra, H. B. Ma +1
Steep slope streams show large fluctuations of sediment discharge across several time scales. These fluctuations may be inherent to the internal dynamics of the sediment transport…
Spatial correlations in bed load transport: evidence, importance, and modelling
J. Heyman, H. B. Ma, F. Mettra +1
This article examines the spatial {dynamics of bed load particles} in water. We focus particularly on the fluctuations of particle activity, which is defined as the number of movin…
Compressibility regularizes the "" rheology for granular flows
J. Heyman, R. Delannay, H. Tabuteau +1
The -rheology has been recently proposed as a potential candidate to model the flow of frictional grains in a dense inertial regime. However, this rheology was shown to be il…