Results 1 to 10 of about 8,225 (78)

MeshfreeFlowNet: A Physics-Constrained Deep Continuous Space-Time Super-Resolution Framework [PDF]

open access: yes, 2020
We propose MeshfreeFlowNet, a novel deep learning-based super-resolution framework to generate continuous (grid-free) spatio-temporal solutions from the low-resolution inputs. While being computationally efficient, MeshfreeFlowNet accurately recovers the
Anandkumar, Anima   +8 more
core   +2 more sources

Steve Smale and Geometric Mechanics [PDF]

open access: yes, 1993
Thus, one can say-perhaps with only a slight danger of oversimplification- that reduction theory synthesises the work of Smale, Arnold (and their predecesors of course) into a bundle, with Smale as the base and Arnold as the fiber.
Marsden, Jerrold E.
core   +1 more source

Weak Continuity and Compactness for Nonlinear Partial Differential Equations [PDF]

open access: yes, 2015
We present several examples of fundamental problems involving weak continuity and compactness for nonlinear partial differential equations, in which compensated compactness and related ideas have played a significant role.
Chen, Gui-Qiang G.
core   +1 more source

Multisymplectic formulation of fluid dynamics using the inverse map [PDF]

open access: yes, 2007
We construct multisymplectic formulations of fluid dynamics using the inverse of the Lagrangian path map. This inverse map, the ‘back-to-labels’ map, gives the initial Lagrangian label of the fluid particle that currently occupies each Eulerian position.
Cotter, CJ, Holm, DD, Hydon, PE
core   +2 more sources

Analytic solutions of the Madelung equation [PDF]

open access: yes, 2017
We present analytic self-similar solutions for the one, two and three dimensional Madelung hydrodynamical equation for a free particle. There is a direct connection between the zeros of the Madelung fluid density and the magnitude of the quantum ...
Barna, Imre F.   +2 more
core   +3 more sources

3+1 formulation of non-ideal hydrodynamics [PDF]

open access: yes, 1997
The equations governing dissipative relativistic hydrodynamics are formulated within the 3+1 approach for arbitrary spacetimes. Dissipation is accounted for by applying the theory of extended causal thermodynamics (Israel-Stewart theory).
Appl, Stefan, Peitz, Jochen
core   +2 more sources

Energy preserving model order reduction of the nonlinear Schr\"odinger equation [PDF]

open access: yes, 2018
An energy preserving reduced order model is developed for two dimensional nonlinear Schr\"odinger equation (NLSE) with plane wave solutions and with an external potential.
Karasözen, Bülent, Uzunca, Murat
core   +2 more sources

Analysis of the shearing instability in nonlinear convection and magnetoconvection [PDF]

open access: yes, 1996
Numerical experiments on two-dimensional convection with or without a vertical magnetic field reveal a bewildering variety of periodic and aperiodic oscillations.
A M Rucklidge   +41 more
core   +1 more source

Approximation of tensor fields on surfaces of arbitrary topology based on local Monge parametrizations [PDF]

open access: yes, 2020
We introduce a new method, the Local Monge Parametrizations (LMP) method, to approximate tensor fields on general surfaces given by a collection of local parametrizations, e.g.~as in finite element or NURBS surface representations.
Arroyo, Marino   +2 more
core   +3 more sources

New variational and multisymplectic formulations of the Euler-Poincar\'e equation on the Virasoro-Bott group using the inverse map

open access: yes, 2018
We derive a new variational principle, leading to a new momentum map and a new multisymplectic formulation for a family of Euler--Poincar\'e equations defined on the Virasoro-Bott group, by using the inverse map (also called `back-to-labels' map).
Holm, Darryl D., Tyranowski, Tomasz M.
core   +1 more source

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