ESPCI web site
Vorticité et Surface Libre
GdR MéPhy organises a day workshop on vorticity-free surface interaction.
When a solid moves in a fluid, it creates vorticity (boundary layers, shear layers …). What happens when the solid is soft? or even worse, when instead of being a solid, it is a free surface? The vorticity and its dynamics will affect the shape of the free surface… which will in turn affect the flow.
At solid surfaces, vorticity is induced by the no-slip boundary condition. At free surfaces there are as well boundary layers: instead of no-slip, it is no-stress. Detachment of boundary layers changes drastically the flow pattern, and thus the pressure field. With surface tension, a curved free surface is linked to a pressure jump that will in turn interact with the pressure pattern of the flow.
This happens for instance in:
– Hydraulic jumps (recirculation bubbles inside a fragile geometry)
– Atomization (turbulence near to free surfaces, flow in recessing liquid films and ligaments)
– Waves on the ocean (instabilities)
– The wake and oscillation of a rising bubble
-…
Where and when?
The workshop will be wednesday the 16th of septembre at the ESPCI, Amphi urbain (where is ESPCI?).
(The lunch will take place in salle Champetier)
Program
The short presentations consist in 10 minutes of presentation and 3 minutes of questions.
The program may still be subject to some slight modifications…
-
9h15-9h30 Welcoming coffee
1) Introduction
9h30-9h40, 10min|introduction
9h40-10h05, 20+5min|Lagrée|Pierre-Yves| d’Alembert-Paris|Boundary layers and free surfaces|
10h05-10h18, 10+3min|Moisy|Frédéric|FAST-Paris|Vorticity generation in an orbitally shaken container|
2) Hydraulic jump-flow separation
10h18-10h41-20+5min|Bohr|Tomas|DTU Physics-Copenhagen |Scaling and structure of hydraulic jumps|
10h41-10h54, 10+3min|Sébilleau|Julien|IMFT-Toulouse|Flow separation from a stationary meniscus|
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10h54-11h30, Discussion – Coffee
11h30-11h43, 10+3min|Duchesne|Alexis|GRASP-Liège|Circular Hydraulic Jump|
11h43-11h56, 10+3min|Legendre|Dominique|IMFT-Toulouse|Vorticity and bubble dynamics|
11h56-12h2120+5min|Argentina|Médéric|INLN-Nice|Liquid foam hydraulic jump|
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12h21-14h00, Lunch
3) Waves
14h00-14h25, 20+5min|Gallaire|François|LFMI-Lausanne|Instabilities with surface tension and shear|
14h25-14h38, 10+3min|Rousseaux|Germain|Pprime-Poitier|Vorticity effect on wave-current interaction|
14h38-14h51, 10+3min|Scheid|Benoit|TIPs lab-Bruxelles|Hanging hydrodynamic waves|
14h51-15h04, 10+3min|Popinet|Stéphane|d’Alembert-Paris|Breaking wave dissipation and bubble distribution|
15h04-15h17, 10+3min|Berhanu|Michael|MSC-Paris|Dissipation of capillary waves|
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15h17-15h50, Discussion – Coffee
4) Turbulence
15h50-16h15, 20+5min|Rabaud|Marc|FAST-Paris|Wind and sea waves|
16h15-16h28, 10+3min|Zaleski|Stéphane|d’Alembert-Paris|Turbulence and liquid-gas interfaces|
16h28-16h41, 10+3min|Vila|Jean-Paul|IMT-Toulouse|thin-film model with turbulence|
16h41-16h54, 10+3min|Jamin|Timothée|MSC-Paris|Experiments on the interaction between hydrodynamic turbulence and surface waves|
16h54-17h20, 20+5min|Clanet | Christophe | LadHyx-Paris |Footprints of vortices|
-
17h45, Farewell
Registration
To register (please do even though you only want to attend), go to the registration wiki page or write an email to Jérôme Hoepffner.
List of participants
| Nom | Prénom | Laboratoire | Présentation |
|---|---|---|---|
| Bohr | Tomas | DTU Physics-Köpenhamn | From Newton’s bucket to rotating polygons |
| Clanet | Christophe | LadHyx-Paris | Footprints of vortices |
| Limat | Laurent | MSC-Paris | Flow separation from a stationary meniscus |
| Zaleski | Stéphane | d’Alembert-Paris | Turbulence and liquid-gas interfaces |
| Rabaud | Marc | FAST-Paris | Wind and sea waves |
| Moisy | Frédéric | FAST-Paris | Vorticity generation in an orbitally shaken container |
| Lagrée | Pierre-Yves | d’Alembert-Paris | Boundary layers and free surfaces |
| Hoepffner | Jerôme | d’Alembert-Paris | Vorticity in liquid fragmentation |
| Brunet | Philippe | MSC-Paris | … |
| Argentina | Médéric | INLN-Nice | Liquid foam hydraulic jump |
| Scheid | Benoit | TIPs lab-Bruxelles | Hanging hydrodynamic waves |
| Claudin | Philippe | PMMH-Paris | … |
| de Maleprade | Hélène | PMMH-Paris | … |
| Rajchenbach | Jean | LPMC-Nice | … |
| Legendre | Dominique | IMFT-Toulouse | Vorticity and bubble dynamics |
| Gallaire | François | LFMI-Lausanne | Interface instabilities |
| Elias | Florence | MSC-Paris | Waves on a soap film |
| Cortet | Pierre-Philippe | Fast-Orsay | … |
| Vila | J.-P. | IMT-Toulouse | thin-film model with turbulence |
| Ramos-Canut | Stella | ILM-Lyon | … |
| Berhanu | Michael | MSC-Paris | Dissipation of capillary waves |
| Jamin | Timothée | MSC-Paris | Experiments on the interaction between hydrodynamic turbulence and surface waves |
| Rousseaux | Germain | Pprime-Poitier | Vorticity effect on wave-current interaction |
| Chopin | Julien | d’Alembert | … |
| Sauret | Alban | CVI-Paris | … |
| Godoy-Diana | Ramiro | PMMH-Paris | … |
| Guérin | Adrien | IPGP-Paris | … |
| Keiser | Ludovic | PMMH-Paris | … |
| Barthel | Etienne | SIMM-Paris | … |
| Popinet | Stéphane | d’Alembert-Paris | Breaking wave dissipation and bubble distribution |
| Schindler | Michael | PCT-Paris | … |
| Duchesne | Alexis | GRASP-Liège | Circular Hydraulic Jump |
| Aumaître | Sebastien | CEA-Paris | … |
| Labousse | Matthieu | Paris 7-Paris | … |
| Haudin | Florence | Paris 7-Paris | … |
| Sébilleau | Julien | IMFT-Toulouse | … |
| Paré | Gounséti | D’Alembert-Paris | … |
| Penel | Yohan | UPMC-Paris | … |
| Harris | Jeffrey | Ecole des ponts-Paris | … |
| Tuckerman | Laurette | PMMH-Paris | … |
| Bengana | Yacine | PMMH-Paris | … |
| Josserand | Christophe | d’Alembert-Paris | … |
| Ling | Stanley | d’Alembert-Paris | … |
| Raoult | Cécile | … | … |