François Rioual Full Research Fellow (CR1), INRAE

Présentation

My background is in liquid physics studied in Paris.After a first research experience on granular flows in hoppers in the group of Pr. E.Clément in Paris in 1997, I did my PhD on eolian transport of granular materials under the supervision of Dr. A.Valance and D.Bideau in Rennes (2002). I spent my first postdoctoral time in the Liphy lab. in Grenoble working with Dr. T.Biben and Dr. C.Misbah on the modelling of vesicle dynamics under flow with applications on blood flow rheology (2003). I then joined the foam physics group of Pr. D.Weaire in Trinity College Dublin where I worked on foam rheology (dilatancy) in possible relation to the onset of convective instability in foams (2004).Since 2005, i worked in IRSTEA then INRAE on particulate flow processes and transfers with applications in environment (spreading technologies in agriculture (TSCF lab), rockfall modelling in mountain areas (ETNA lab)) and chemical engineering related to refrigeration applications for food or bioenergy (FRISE lab) as in grain storage or heat exchange technologies.I appreciate to do fundamental science on technologically relevant systems with sometimes unexpected results...More generally, my recent work is part of a more general approach which intends to revisit the different process chains encountered in the agriculture and agro-food sector in the perspective of the necessary energy transition.

Publications

Article dans une revue (21)

Mobile bed heat exchangers: Overview and beyond François Rioual Applied Thermal Engineering, 2025, 279, pp.127630. ⟨10.1016/j.applthermaleng.2025.127630⟩ Article dans une revue hal-05245291v1
Characterisation of the granular dynamics at the interface between a pipe and a granular flow in a rotating drum François Rioual,Paule Emmanuelle Eva Gbehe Particuology , 2024, 86, pp.117-125. ⟨10.1016/j.partic.2023.05.003⟩ Article dans une revue hal-04218727v1
Experimental investigation on the wetting behavior of a superhydrophobic surface under controlled temperature and humidity Walid Samah,Pascal Clain,Francois Rioual,Laurence Fournaison,Anthony Delahaye Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2023, 656 (B), pp.130451. ⟨10.1016/j.colsurfa.2022.130451⟩ Article dans une revue hal-03986067v1
Review on ice crystallization and adhesion to optimize ice slurry generators without moving components Walid Samah,Pascal Clain,François Rioual,L. Fournaison,Anthony Delahaye Applied Thermal Engineering, 2023, 223, pp.119974. ⟨10.1016/j.applthermaleng.2023.119974⟩ Article dans une revue hal-04003327v1
Investigation of ice detachment by a liquid jet on various submerged surfaces for the development of ice slurry generators without mechanical scraping Walid Samah,Pascal Clain,François Rioual,L. Fournaison,Anthony Delahaye Applied Thermal Engineering, 2023, pp.121463. ⟨10.1016/j.applthermaleng.2023.121463⟩ Article dans une revue hal-04273785v1
A model for the threshold of the rolling transition François Rioual Technische Mechanik, 2019, 32 (2-5), pp.530-534 Article dans une revue hal-02596857v1
The Rolling Transition in a Granular Flow along a Rotating Wall François Rioual,Aurélie Le Quiniou,Yuri Lapusta Materials, 2011, 4 (11), pp.2003-2016. ⟨10.3390/ma4112003⟩ Article dans une revue hal-04072630v1
Experimental study of the bouncing trajectory of a particle along a rotating wall A. Le Quiniou,François Rioual,Philippe Heritier,,Yuri Lapusta Physics of Fluids, 2009, 21 (12), ⟨10.1063/1.3273364⟩ Article dans une revue hal-04218848v1
DEM simulations of the particle flow on a centrifugal fertilizer spreader P. van Liedekerke,E. Tijskens,E. Dintwa,François Rioual,J. Vangeyteet al. Powder Technology, 2009, 190 (3), pp.348-360. ⟨10.1016/j.powtec.2008.08.018⟩ Article dans une revue hal-02596869v1
Impact of a bead on a rotating wall François Rioual,A. Le Quiniou,Y. Lapusta Comptes Rendus. Mécanique, 2008, 336, pp.664-669. ⟨10.1016/j.crme.2008.05.007⟩ Article dans une revue istex hal-02590915v1
Flow of a particle along a rotating wall A. Le Quiniou,François Rioual EPL - Europhysics Letters, 2008, 82 (34001), pp.1-6. ⟨10.1209/0295-5075/82/34001⟩ Article dans une revue hal-02590914v1
Characterization of the fragmentation of protein aggregates in suspension subjected to flow N. Péron,S.P. Heffernan,E.P. Byrne,François Rioual,J.J. Fitzpatrick Chemical Engineering Science, 2007, 62 (22), pp.6440-6450. ⟨10.1016/j.ces.2007.07.061⟩ Article dans une revue istex hal-04082426v1
Rolling and sliding dynamics in centrifugal spreading François Rioual,Emmanuel Piron,E. Tijskens Applied Physics Letters, 2007, 90 (2), p. 021918 - p. 021918-3. ⟨10.1063/1.2424647⟩ Article dans une revue hal-04219313v1
Elastic dilatancy in wet foams: A simple model François Rioual,S. Hutzler,D. Weaire Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2005, 263 (1-3), pp.117-120. ⟨10.1016/j.colsurfa.2005.01.019⟩ Article dans une revue istex hal-04072610v1
Analytical analysis of a vesicle tumbling under a shear flow François Rioual,T. Biben,C. Misbah Physical Review E : Statistical, Nonlinear, and Soft Matter Physics [2001-2015], 2004, 69 (6), pp.061914. ⟨10.1103/PhysRevE.69.061914⟩ Article dans une revue hal-04219315v1
Steady to unsteady dynamics of a vesicle in a flow J. Beaucourt,François Rioual,T. Séon,T. Biben,C. Misbah Physical Review E : Statistical, Nonlinear, and Soft Matter Physics [2001-2015], 2004, 69 (1), pp.011906. ⟨10.1103/PhysRevE.69.011906⟩ Article dans une revue hal-04072533v1
Collision process of a bead on a two-dimensional bead packing: Importance of the inter-granular contacts François Rioual,Alexandre Valance,D Bideau EPL - Europhysics Letters, 2003, 61 (2), pp.194-200. ⟨10.1209/epl/i2003-00212-8⟩ Article dans une revue istex hal-04072591v1
Dynamics of aeolian sand ripples Z. Csahók,C. Misbah,François Rioual,Alexandre Valance European Physical Journal E: Soft matter and biological physics, 2000, 3 (1), pp.71-86. ⟨10.1007/s101890070043⟩ Article dans une revue hal-04082436v1
Experimental study of the collision process of a grain on a two-dimensional granular bed François Rioual,Alexandre Valance,Daniel Bideau Physical Review E , 2000, 62 (2), pp.2450-2459. ⟨10.1103/physreve.62.2450⟩ Article dans une revue hal-04072600v1
Granular hydrodynamics and density wave regimes in a vertical chute experiment G Reydellet,François Rioual,E Clément EPL - Europhysics Letters, 2000, 51 (1), pp.27-33. ⟨10.1209/epl/i2000-00333-0⟩ Article dans une revue istex hal-04072567v1
A nonlinear model for aeolian sand ripples Alexandre Valance,François Rioual The European Physical Journal B: Condensed Matter and Complex Systems, 1999, 10 (3), pp.543-548. ⟨10.1007/s100510050884⟩ Article dans une revue istex hal-04082442v1

Communication dans un congrès (4)

Quelques problèmes de génie thermique de la matière en grains pouvant intéresser le GDR Slamm François Rioual Jour,ées du GDR SLAMM, GDR SLAMM, Nov 2024, Le Croisic (FR), France Communication dans un congrès hal-04846820v1
Experimental characterization of the icephobic surfaces properties for optimization of ice slurry production Walid Samah,Pascal Clain,Francois Rioual,Laurence Fournaison,Anthony Delahaye 26e Congrès International du Froid (International Congress of Refrigeration 2023 "ICR 2023"), Institut International du Froid (IIF), Aug 2023, Paris France, France. ⟨10.18462/iir.icr.2023.0211⟩ Communication dans un congrès hal-04193075v1
Granular Flow Under the Action of Centrifugal Force: A Critical Dynamic Friction Coefficient Aurélie Le Quiniou,François Rioual,Yuri Lapusta Traffic and Granular Flow ’07, 2007, PARIS, France Communication dans un congrès hal-04219446v1
Representing particle shape in Discrete Element Modelling Engelbert Tijskens,François Rioual RELPOWFLO, 2008, TROMSO- Norge, Norway. pp.214-219 Communication dans un congrès hal-04219473v1

Poster de conférence (2)

Transferts thermiques dans les matériaux granulaires biosourcés: vers la caractérisation de l'efficacité énergétique d'échangeurs pour la réfrigération François Rioual,Xavier Frank,Houssam Nfissi 33. Congrès de la Société Francaise de Thermique, Jun 2025, Chambéry, France Poster de conférence hal-05239411v1
Frisedrum: a new mobile bed heat exchanger for cooling applications François Rioual,Rihab Khirallah,Paule Emmanuelle Eva Gbehe International Congress of Refrigeration 2023, Aug 2023, PARIS, France Poster de conférence hal-04218737v1

Proceedings/Recueil des communications (3)

Sheet Flows, Avalanches, and Dune Migration on Earth and Mars James Thomas Jenkins,Daniel Hanes,Daniel Bideau,Gaelle Berton,François Rioualet al. 1, pp.370-385, 2002, Sixth Microgravity Fluid Physics and Transport Phenomena Conference Proceedings/Recueil des communications hal-04219388v1
Non linear dynamics of eolian sand ripples Alexandre Valance,François Rioual,Chaouqi Misbah,Zoltan Csahok A.A.Balkema, 2001, PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON MICROMECHANICS OF GRANULAR MEDIA Proceedings/Recueil des communications hal-04219336v1
Jamming Patterns and Blockade Statistics in Model Granular Flows Eric Clément,Guillaume Reydellet,François Rioual,B. Parise,V. Fanguetet al. Springer Berlin Heidelberg, pp.457-468, 2000, ⟨10.1007/978-3-642-59751-0_50⟩ Proceedings/Recueil des communications istex hal-04219350v1

Brevet (1)

Procédé et installation de transfert thermique entre un matériau granulaire et un fluide François Rioual,Alain Denis,Sebastien Saavedra France, Patent n° : FR2302630. 2024 Brevet hal-04540998v1

Rapport (1)

Premiers éléments de caractérisation hydrodynamique d'un nouvel échangeur à chaleur en tambour tournant Francois Rioual,Eva Paule Emmanuelle Gbehe [Rapport de recherche] Paris-Saclay University. 2022 Rapport hal-03764680v1