My research interests include modeling and simulations of
complex non-Newtonian fluids.
See also my
publication list for details.
Fig. 1 : [left] A viscoelastic fluid (e.g. a liquid polymer) flowing through an abrupt contraction ;
[right] A yield stress fluid (e.g. mud) flowing around an obstacle ; adaptive mesh
Click on the images to enlarge and get more comments.
This includes some theoretical researches
and some applications
- Modeling of non-colloidal suspensions as a rate-independent viscoelastic fluid.
Olivier Ozenda (PhD, LJK, Grenoble)
Guillaume Chambon (IRSTEA, Grenoble).
Fig. 2 : Couette inversion for a suspension (experimental data from F. Blanc et al.).
Modeling of the arctic sea ice cover as a britle-viscoelastic fluid.
Véronique Dansereau (post-doc, Isterre, Grenoble)
Jérome Weiss (Isterre, Grenoble).
Fig. 3 : A britle-viscoelastic model for the ice (Dansereau, Saramito, Weiss).
Fractures appear and propagate during an uniaxial compression : view of the deformation.
Simulation of volcanic lava flows with shallow-depth averaged viscoplastic models.
Noé Bernabeu (post-doc, LJK, Grenoble),
Andrew Harris (LMV, Clermont-Ferrand)
Claude Smutek (IPGP, Saint-Denis de La Réunion).
See also the LAVA project web site.
Fig. 4 : Simulation of volcanic lava flows (Bernabeu, Saramito, Smutek).
Partial derivative equation on a surface: application to morphogenesis, biological tissues.
With Mahamar Dicko (former PhD, LJK, Grenoble)
Jocelyn Étienne (LIPHY, Grenoble).
Fig. 5 : Gastrulation of a drosophila embryon:
comparison between observation (op) and simulation (bottom).
Simulation of foam flows
Ibrahim Cheddadi (former PhD stduent; now TIM-C, Grenoble)
François Graner (LMSC et Univ. Diderot, Paris).
Fig. 6 : Foam flow around an obstacle: (top) simulation (Cheddadi, Saramito, Graner); (bottom) experiment.
Click here for a numerical simulation based video animation due to I. Cheddadi (gif, 0.7 mb).
Click here for an experimental observation based video animation due to M. Asipauskas (avi, 24 mb):
bubbles are colored according to the number of sides: blue=7, red=5.
Numerical modelling of red blood cells and vesicule membranes
with Aymen Laadhari (ETH, Zurich, Suisse).
and Chaouqi Misbah (Liphy, Grenoble).
Fig. 7 : Tumbling of red blood cells and vesicle under shear flow:
(top) experiment (Abkarian and Viallat, 2008);
(bottom) simulation (Laadhari, Saramito, Misbah).
Previous research interests and applications
Last updated: March 2, 2018
Direct simulation of the motion of particles in flowing liquids
Daniel D. Jospeh and
Adaptive mesh for the epitaxial grown of cristal films
with Éric Bonnetier
and Morgan Brassel (LJK, Grenoble).
See also the IMAG PIF project home page.
Numerical simulation of mud flows
with Dominique Laigle, Mohammed Naim (IRSTEA),
Fabrice Neyret (LJK, Grenoble).
Numerical simulation of powder-snow avalanches in mountains
Jocelyn Étienne (former PhD student, now Liphy, Grenoble),
Emil Hopfinger (LEGI, Grenoble).
Fig. 8 : Snow avalanche with aerosol and mesh adaptation (click on the images to enlarge).
Click here for watching a direct simulation of snow avalanche (gif, 7.6 mb).
Click here for a real movie where I present some new results on snow avalanches simulation (wmv, 49 mb).
Risques d'avalanches élevés : explication.
Intervention à l'édition nationale du journal télévisé de la chaine FR3, le 24 f´vrier 2006, 12h-14h : cliquez ici (wmv, 6.7 mb).
Structures and instabilities in geophysic and mechanic: analysis and simulation, with J. C. Paumier.