ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Sylvain Patinet
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH - Karen Mulleners (EPFL)
Getting smarter overnight : how automated experiments help unwind unsteady vortex-dominated flows
Abstract : Typical unsteady vortex-dominated flows like those involved in bio-inspired propulsion, unsteady airfoil separation, and vortex-induced vibrations can be prohibitively expensive to simulate and impossible to measure comprehensively. They are inherently non-linear, often involve moving boundaries, high-dimensional parameter spaces, and multiscale flow structures. The classical way to get around these challenges has been to reduce the experimental complexity by using canonical motions (e.g. ramp-up or sinusoidally pitching motions) or simplified unsteady inflow conditions (e.g. one-minus-cosine or trapezoidal gust shapes). In our lab, we design automated experiments that can run continuously and autonomously such that we can explore and exploit higher-dimensional parameter spaces that cover more realistic and technically relevant unsteady conditions compared to what is traditionally feasible when conducting supervised canonical motion experiments. This approach give us the ability to derive more robust and generalizable models and control solutions while still discovering rare and extreme events. Our recent experiments allowed us to uncover flapping wing kinematics that maximize lift and efficiency, to optimize blade pitching kinematics that improve the power production of vertical axis wind turbines, and to gain insight into the influence of morphology on the forces of thin flexible objects. Once the experiments are started, the experimentalists' input is minimized while the potential for scientific discovery is maximized.
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- Seminars
Seminars (3)
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Séminaire PMMH - Louis-Alexandre Couston (ENS Lyon)
Vendredi 17 mai de 11h00 à 12h00 - Salle réunion PMMH 1
What we know and don't know about the ocean circulation and ice melting around Antarctica
The Antarctic ice sheet is losing mass increasingly rapidly and could contribute several tens of centimetres of sea-level rise by 2100. In this presentation I will review our understanding of the southern ocean circulation, which (we know) is controlling ice melting around Antarctica and driving the retreat of the (...) -
Séminaire PMMH - François Petrelis (ENS)
Vendredi 31 mai de 11h00 à 12h00 - Salle réunion PMMH 1
Earthquake statistical properties : an explanation for the distribution of magnitude and for the existence of aftershocks
Earthquakes in nature follow several statistical properties. In particular, the distribution of energy released by an earthquake (Gutenberg-Richter's law) and the frequency of aftershocks after a large event (Omori's law) are both power-laws. By studying several earthquake models, we have shown that the (...) -
Séminaire PMMH - Avin Babataheri (Ladhyx)
Vendredi 20 septembre de 11h00 à 12h00 - Salle réunion PMMH 1
1D confinement controls cell shape and migration
Pericytes are mural cells of the microvasculature, they wrap around small vessels, support the vessels mechanically and participate in blood flow regulation. Pericytes are distinguished by two main characteristics ; first their distinct morphology, which has been likened to a “bump on a log”, as they present long (...)
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
