71 citations · 214 across the 7 of their papers we have counts for
7 papers
Laminar-Turbulent Patterns in Shear Flows : Evasion of Tipping, Saddle-Loop Bifurcation and Log scaling of the Turbulent Fraction
Pavan V. Kashyap, Juan F. Marìn, Yohann Duguet +1
We analyze a one-dimensional two-scalar fields reaction advection diffusion model for the globally subcritical transition to turbulence. In this model, the homogeneous turbulent st…
Local Coulomb versus Global Failure Criterion for Granular Packings
Silke Henkes, Carolina Brito, Olivier Dauchot +1
Contacts at the Coulomb threshold are unstable to tangential perturbations and thus contribute to failure at the microscopic level. How is such a local property related to global f…
Rotation shields chaotic mixing regions from no-slip walls
Emmanuelle Gouillart, Jean-Luc Thiffeault, Olivier Dauchot
We report on the decay of a passive scalar in chaotic mixing protocols where the wall of the vessel is rotated, or a net drift of fluid elements near the wall is induced at each pe…
Slow decay of concentration variance due to no-slip walls in chaotic mixing
Emmanuelle Gouillart, Olivier Dauchot, Bérengère Dubrulle +2
Chaotic mixing in a closed vessel is studied experimentally and numerically in different 2-D flow configurations. For a purely hyperbolic phase space, it is well-known that concent…
Void statistics and compactivity measurement in an experimental granular pile
Frederic Lechenault, Olivier Dauchot, Eric Bertin
We investigate experimentally the statistics of the free volume inside bidimensional granular packings, for two different kinds of grains and two levels of compaction. With the aim…
Memory of the Unjamming Transition during Cyclic Tiltings of a Granular Pile
Stephanie Deboeuf, Olivier Dauchot, Lydie Staron +2
Discrete numerical simulations are performed to study the evolution of the micro-structure and the response of a granular packing during successive loading-unloading cycles, consis…