This workshop, supported by the Simons Foundation,
has been postponed because of Covid-19 concerns.
What: 2020 Simons Workshop on Singularities in Fluids and Plasmas
When: Wed, Mar 18, 2020, 9:00 am to Fri, Mar 20, 2020, 5:00 pm
Where: Princeton Center for Theoretical Science (PCTS: 4th floor, Jadwin Hall)
Directions: https://www.princeton.edu/meet-princeton/visit-us
Overview
Left: Volume plot of the vorticity for the Kida-Pelz initial condition: six pairs of anti-parallel vortex tubes.
Right: Isosurface of the vorticity for a single tube at a late time.
(taken from T. Grafke and R. Grauer, Applied Mathematics Letters 26, 500 (2013))
Schedule
Simons Workshop on Singularities in Fluids and Plasmas |
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Princeton Center for Theoretical Science, March 18-20, 2020 | |||
March 18 | |||
8:00‑9:00 | Registration and Continental Breakfast | ||
SESSION I Chair: A. Bhattacharjee | Speaker | Video Link | |
9:00‑9:10 | Welcome and logistics | A. Bhattacharjee PPPL |
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9:10‑9:50 | A few remarks on singularities in incompressible fluids | Peter Constantin Princeton University |
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9:50‑10:30 | Non-conservation of the dimension for passive and active scalars | Jose Rodrigo University of Warwick |
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10:30‑11:00 | Coffee | ||
11:00‑11:40 | On a sufficient condition for finite-time singularity in Kida-Pelz flow | Chung-Sang Ng University of Alaska-Fairbanks |
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11:40‑12:10 | Discussion of Session I Talks | ||
12:10‑1:30 | Lunch | ||
SESSION II Chair: P. Helander | Speaker | Video Link | |
1:30‑2:10 | Inverse problem for an equilibrium current sheet | Robert Dewar Australian National University |
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2:10‑2:50 | Current singularity formation in line-tied magnetic fields | Yao Zhou PPPL |
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2:50‑3:20 | Coffee | ||
3:20‑4:00 | Lessons learned about the existence and accessibility of three-dimensional ideal MHD equilibria | Joaquim Loizu EPFL-Lausanne |
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4:00‑4:40 | Machine learning from a continuous viewpoint | Weinan E Princeton University |
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4:40‑5:10 | Discussion of Session II talks | ||
6:30‑9:00 | Workshop Dinner: Nassau Inn | ||
March 19 | |||
8:30‑9:00 | Continental Breakfast | ||
SESSION III Chair: R. MacKay | Speaker | Video Link | |
9:00‑9:40 | Quasisymmetric solutions to forced MHD | Daniel Ginsburg Princeton |
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9:40‑10:20 | An ideal magnetic evolution contains the seed of its own destruction | Allen Boozer Columbia University |
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10:20‑10:40 | Coffee | ||
10:40‑11:20 | Near-singular currents and flows near magnetic islands in magnetically confined plasmas | Allan Reiman PPPL |
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11:20‑12:00 | Elimination of MHD current sheets by modifications to the plasma wall in a fixed boundary model | Eugenia Kim Courant Institute of Mathematical Sciences, New York University |
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12:00‑12:30 | Discussion of Session III talks | ||
12:30‑1:30 | Lunch | ||
SESSION IV Chair: P. Constantin | Speaker | Video Link | |
1:30‑2:10 | Singularities in high-Reynolds number turbulence | Katepalli Sreenivasan New York University |
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2:10‑2:50 | The power spectrum of passive scalar turbulence in the Batchelor regime | Jacob Bedrossian University of Maryland |
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2:50‑3:20 | Coffee | ||
3:20‑4:00 | Uniqueness of Whitham’s highest cusped wave | Alberto Enciso ICMAT |
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4:00‑4:40 | Lagrangian and Dirac constraints and geodesic flow for the ideal incompressible fluid and MHD | Philip Morrison University of Texas at Austin |
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4:40‑5:10 | Discussion on Session IV talks | ||
March 20 | |||
8:30‑9:00 | Continental Breakfast | ||
SESSION V Chair: R. Dewar | Speaker | Video Link | |
9:00‑9:40 | The Hasimoto-Madelung transform and skew-mean-curvature flow in Euler hydrodynamics | Boris Khesin University of Toronto (remotely) |
Join Zoom Meeting |
9:40‑10:20 | Singular equilibria and meta-stability | Steven Cowley PPPL |
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10:20‑10:40 | Coffee | ||
10:40‑11:20 | Formation of current sheets in relativistic magnetospheres of black holes and neutron stars |
Alexander Philippov Center for Computational Astrophysics, The Flatiron Institute |
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11:20‑12:00 | Near-singular dynamics of kinetic ballooning instabilities in plasmas | Ge Dong PPPL |
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12:00‑1:00 | Lunch | ||
SESSION VI Chair: A. Bhattacharjee | Speaker | Video Link | |
1:00‑1:40 | On the derivation of the wave-kinetic equation in weak turbulence | Pierre Germain Courant Institute of Mathematical Sciences, New York University |
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1:40‑2:20 | Singularities and phase-space dynamics in wave physics and turbulence | Ilya Dodin PPPL |
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2:20‑3:00 | Shock formation in compressible fluids | Vlad Vicol Courant Institute of Mathematical Sciences, New York University |
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3:00-3:40 | Discussion and Adjournment |