ERCOFTAC Workshop

Turbulence and Interface

Date

June, 15th-17th, 2022

Location

École Centrale de Lyon

Evaporating droplet's holograms in turbulence
(PRF, 5/113602, 2020)

Organizing Committee

• Mikhael Gorokhovski, Laboratoire de Mécanique des Fluides et d’Acoustique, École Centrale de Lyon
• Alfredo Soldati, Technische Universität Wien, Università di Udine
• Mickaël Bourgoin, Laboratoire de Physique, École Normale Supérieure de Lyon
• Anne Cadiou, Laboratoire de Mécanique des Fluides et d’Acoustique, École Centrale de Lyon
• Florence Raynal, Laboratoire de Mécanique des Fluides et d’Acoustique, École Centrale de Lyon

Motivation and Aims

The current DNS and experiments confirm that the flow at large Reynolds number has a highly irregular structure, i.e. the regions with low gradients of the velocity (the non-turbulent motion) are intermittent with very narrow regions of persisting vortical and sheared structures, in which the velocity gradients are very large. The interactions of such structures may induce the violent local accelerations in the fluid. In many natural phenomena and practical applications, we can meet such a highly-intermittent flow but in the presence of the gas/liquid interface. The examples include see surface turbulence, primary air-blast atomization, the turbulence in stratocumulus clouds, industrial flows with droplets and bubbles. Our main question is two-fold: how the flow structures induce two-phase interactions, and on what may be the signature of the interface between two immiscible fluids on the dynamics of flow structures. By bringing together researchers in various backgrounds, we propose to open discussions on the physics behind these interactions, and we hope that this will motivate the further studies. The expected audience in this Workshop is of about 20 external participants. The Colloquium will be open for free attendance to students and junior researchers, although we highly expect to draw international researchers, complimentary to a score of invited speakers.

Booklet of abstracts

Wednesday, June 15, 2022 - SkyLab, École Centrale de Lyon, Écully

08:30-09:00 Registration
(badges, lunch invitations for speakers, ticket for bus access to the Ampère Museum site)

09:00-09:30 Welcome and opening remarks

Christophe Corre (ÉCL), Christophe Bailly (LMFA), Mikhael Gorokhovski (ERCOFTAC PC Henri Bénard)

09:30-11:15 Targets.

Chair: Claude Cambon

• 9:30 - 10:00 G. Bagheri and O. Schlenczek, B. Thiede, L. Turco, K. Stieger, J-M. Kosub, B. Hejazi, S. Clauberg, M.L. Pöhlker, Ch. Pöhlker, J. Moláček, S. Scheithauer, E. Bodenschatz, Max Planck Institute, Göttingen (Germany)
  Physics of airborne disease transmission: why do we need to advance our understanding?

• 10:00 - 10:30 S. Popinet and L. Deike, W. Mostert, P. K. Farsoiya, J. Wu, B. Deremble, T. Uchida, A. Berny, T. Séon - Inst. D’Alembert, Univ. Grenoble Alpes (France), Princeton Univ. and Oxford Univ. (USA)
  Toward a multiscale framework for ocean atmosphere turbulence

• 10:30 - 10:45 Refreshment Break

• 10:45 - 11:15 A. Pumir and D. Buaria - LP, École Normale Supérieure Lyon (France), Max Planck Institute, Göttingen (Germany) and New York Univ., New York (USA)
  Extreme events in Navier-Stokes turbulence

11:15 - 11:45 Turbulence and spray onset.

Chair: Alfredo Soldati

• 11:15 - 11:45 R. Fox and P. K. Farsoiya, L. Deike - Iowa State Univ., Center for Multiphase Flow Research/Education and Princeton Univ. (USA)
  Direct-numerical simulation of droplet breakup in homogeneous isotropic turbulence

• 11:45 - 12:15 S. Zaleski - Inst. D’Alambert, Sorbonne-Univ. (France)
  Kolmogorov’s and Frisch’s cascade theories applied to atomization

• 12:30 - 13:45 Lunch

• 13:45 - 14:15 O. Desjardins and L. Vu, A. Han - Cornell University (USA)
  High-fidelity multi-scale modeling framework for predicting turbulent spray atomization

• 14:15 - 14:45 M. Herrmann and D. Kedelty, A. Goodrich - Arizona State Univ. (USA)
  A dual scale LES model for dynamics of immiscible interfaces

• 14:45 - 15:15 M. Gorokhovski and A. Barge - LMFA, École Centrale, Lyon and LEGI, Univ. Grenoble-Alpes (France)
  Stochastic models of spray formation and dispersion - effects of intermittency

• 15:15 - 15:30 Refreshment Break

Chair: Carlomassimo Casciola

• 15:30 - 16:00 N. Machicoane and O. Tolfts - LEGI, Univ. Grenoble-Alpes (France)
  Statistics and dynamics of a liquid jet surrounded by a gas jet

• 16:00 - 16:30 Z. Huang and M. Alonzo, A. Cartellier - LEGI, Univ. Grenoble-Alpes (France)
  Breakup of surfactant liquid jet by a coaxial airblast atomizer

• 16:30 - 17:00 N. Rimbert, B. Ji, G. Kewalramani, Y. Dossman1, M. Gradeck, R. Meignen - Univ. Lorraine, and IRSN, Saint Paul Lez Durance (France)
  Experimental Study of Liquid-liquid jet fragmentation: Eulerian and Lagrangian approach

• 17:00 - 17:30 M. Bourgoin and T. Basset, B. Viggiano, T. Barois, M. Gibert, N. Mordant, R. B. Cal, R. Volk - LP, École Normale Supérieure de Lyon (France) and LEGI, Univ. Grenoble-Alpes (France)
  Entrainment, diffusion and effective compressibility in a self-similar free shear turbulent jet

• 17:30 Welcome aperitif

Thursday, June 16, 2022 - SkyLab, École Centrale de Lyon, Écully

09:30-11:45 Interface dynamics at a high and a low Reynolds numbers. External intermittency.

Chair: Mickaël Bourgoin

• 9:00 - 9:30 F. Coletti - ETH, Zurich (Switzerland)
  Spatial and Temporal Scales of Free-Surface Turbulence

• 9:30 - 10:00 L. Danaila, Zh. Zhang, I. Danaila, E. Levéque - Univ. Rouen and LMFA, École Centrale de Lyon (France)
  High-order statistics and intermittency of a two-fluid HVBK quantum turbulent flow

• 10:00 - 10:30 J.-C. Vassilicos - LMFL, Centrale Lille, Univ. Lille (France)
  The energy cascade at the turbulent/non-turbulent interface

• 10:30 - 10:45 Refreshment Break

• 10:45 - 11:15 S. Chibbaro, M. C. Esposito and L. Brandt - Univ. Paris-Saclay (France) and KTH Royal Institute of Technology (Sweden)
  Modulation of homogeneous and isotropic turbulence in emulsions

• 11:15 - 11:45 M. V. Salvetti, A. Mariotti, M. Antognoli, S. Tomasi Masoni, E. Brunazzi, C. Galletti, R. Mauri - Univ. Pisa (Italy)
  Fascinating interface topology and dynamics in micro mixers

• 12:00 - 12:45 Lunch

• 13:00 - Workshop will move for an afternoon session to Maison d’Ampère in Poleymieux-au-Mont-d’Or, including visit of the Museum – Historic Site of European Physics

Thursday, June 16, 2022 - Maison d’Ampère, Poleymieux-au-Mont-d’Or

13:45-14:00 Words of Welcome
Geneviève Comte-Bellot

14:00-18:30 Turbulence, Particles.

Chair: Rodney Fox

• 14:00 - 14:30 C. Casciola, F. Seraffni1, F. Battista1, P. Gualtieri - Sapienza Univ. Rome (Italy)
  Drag reduction in turbulent pipe flows of realistic polymer solutions

• 14:30 - 15:00 O. Simonin, A. Boutsikakis, P. Fede - IMFT, Univ. Toulouse (France)
  On the modelling and simulation of the dynamic of charged particles in turbulent flow

• 15:00 - 15:30 G. Verhille, B. Favier, P. Le Gal - IRPHE, Aix-Marseille Univ. Centrale Marseille (France)
  Inertial deformable particles in turbulence

• 15:30 - 15:45 Refreshment Break

Chair: Olivier Desjardins

• 15:45 - 16:15 A. Soldati, F. Mangani1, A. Roccon - TU Wien, Vienna (Austria) and Univ. Udine (Italy)
  Influence of density and viscosity on deformation, breakage and coalescence of bubbles in turbulence

• 16:15 - 16:45 F. Risso, F. Le Roy de Bonneville, R. Zamansky, A. Boulin, J.-F. Haquet - IMFT, Univ.Toulouse and CEA, Saint-Paul-Lez-Durance (France)
  Dynamics of bubble-induced turbulence from coarse-grained simulations

• 16:45 - 17:15 K. Schneider - Centre de Mathematiques et d’Informatique, Aix-Marseille Univ. (France)
  Multiscale techniques for analyzing voids and clusters in particle-laden turbulence

• 17:15 - 18:00 Guided Tour of Museum

• 18:00 - Bus to Lyon Center (place Bellecour, Lyon 69002)

• 19:30 - Social Diner in Lyon

Friday, June 17, 2022 - SkyLab, École Centrale de Lyon, Écully

09:00-17:00 Turbulence, Particles, Scalars.

Chair: Emmanuel Lévèque

• 9:00 - 9:30 S. Huisman, S. Angriman, P. Cobelli, M. Bourgoin, R. Volk, P. Mininni, Max Planck UT Center (Germany) Univ. Twente (Netherlands), LP, ENS (France) and Univ. Buenos Aires (Argentine)
  Broken mirror symmetry of tracer’s trajectories in turbulence

• 09:30 - 10:00 H. Clercx, M. Madonia, A. A. Guzmán, X. de Wit, R. Kunnen - Eindhoven Univ. of Technology, Eindhoven (Netherlands)
  Turbulent rotating Rayleigh-Bénard convection: Flow organization and heat transfer in slender confined cylinders

• 10:00 - 10:30 M. Obligado and A. Ferran, N. Machicoane, N. Mordant, A. Aliseda - LEGI, Univ. Grenoble Alpes, Grenoble (France) and Univ. Washington, Seattle (USA)
  Gravitational settling of inertial particles in homogeneous isotropic turbulence

• 10:30 - 10:45 Refreshment Break

Chair: Olivier Simonin

• 10:45 - 11:15 C. Marchioli, A. Hajisharifi1, A. Soldati - Univ. Udine (Italy) and TU Wien (Austria)
  Particle capture by large deformable drops in turbulent flow

• 11:15 - 11:45 F. Picano, J. Wang, F. Dalla Barba - Univ. Padova (Italy)
  On the evaporation of dilute droplets in turbulent jets: from physics to applications

• 11:45 - 12:15 A. Naso and M. Z. Sheikh, K. Gustavsson, E. Lévêque, B. Mehlig, A. Pumir - LMFA, École Centrale Lyon and LP, École Normale Supérieure de Lyon (France)
  Collisions between ice crystals in clouds

• 12:15 - 12:45 L. Méès, N. Grosjean and J. L. Marie - LMFA, ÉCL (France)
  Lagrangian tracking of evaporating droplets in a homogeneous quasiisotropic turbulence

• 12:45 - 13:15 D. Tordella, L. Fossa, Sh. Abdunabiev, M. Golshan - Politechnico Turin (Italy)
  Microphysical time scales and local supersaturation balance at a warm Cloud Top Boundary

• 13:15 - 13:30 Concluding remarks by Alfredo Soldati, Mickael Bourgoin and Mikhael Gorokhovski

• 13:30 - 14:00 Lunch

The workshops thanks the GdR Calcul for its financial support for the event