Results 1 to 10 of about 92,046 (236)

From the Boltzmann equation to fluid mechanics on a manifold [PDF]

open access: greenPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011
We apply the Chapman–Enskog procedure to derive hydrodynamic equations on an arbitrary surface from the Boltzmann equation on the surface.
Love, Peter John, Cianci, Donato, '10
core   +9 more sources

Relativistic fluid mechanics, Kähler manifolds, and supersymmetry [PDF]

open access: greenPhysical Review D, 2003
We propose an alternative for the Clebsch decomposition of currents in fluid mechanics, in terms of complex potentials taking values in a Kahler manifold. We reformulate classical relativistic fluid mechanics in terms of these complex potentials and rederive the existence of an infinite set of conserved currents. We perform a canonical analysis to find
Tino S. Nyawelo   +2 more
semanticscholar   +6 more sources

Globalizing manifold-based reduced models for equations and data [PDF]

open access: yesNature Communications
One of the very few mathematically rigorous nonlinear model reduction methods is the restriction of a dynamical system to a low-dimensional, sufficiently smooth, attracting invariant manifold.
Bálint Kaszás, George Haller
doaj   +3 more sources

A Hierarchy of Probability, Fluid and Generalized Densities for the Eulerian Velocivolumetric Description of Fluid Flow, for New Families of Conservation Laws [PDF]

open access: yesEntropy, 2022
The Reynolds transport theorem occupies a central place in continuum mechanics, providing a generalized integral conservation equation for the transport of any conserved quantity within a fluid or material volume, which can be connected to its ...
Robert K. Niven
doaj   +2 more sources

Fractional vector calculus and fluid mechanics

open access: yesJournal of the Mechanical Behavior of Materials, 2017
Basic fluid mechanics equations are studied and revised under the prism of fractional continuum mechanics (FCM), a very promising research field that satisfies both experimental and theoretical demands.
Lazopoulos Konstantinos A.   +1 more
doaj   +2 more sources

Linear and nonlinear dimensionality reduction from fluid mechanics to machine learning [PDF]

open access: yesMeasurement science and technology, 2022
Dimensionality reduction is the essence of many data processing problems, including filtering, data compression, reduced-order modeling and pattern analysis.
M. A. Mendez
semanticscholar   +1 more source

NOMAD: Nonlinear Manifold Decoders for Operator Learning [PDF]

open access: yesNeural Information Processing Systems, 2022
Supervised learning in function spaces is an emerging area of machine learning research with applications to the prediction of complex physical systems such as fluid flows, solid mechanics, and climate modeling.
Jacob H. Seidman   +3 more
semanticscholar   +1 more source

Diffusion-driven flows in a nonlinear stratified fluid layer [PDF]

open access: yesJournal of Fluid Mechanics, 2023
Diffusion-driven flow is a boundary layer flow arising from the interplay of gravity and diffusion in density-stratified fluids when a gravitational field is non-parallel to an impermeable solid boundary.
Lingyun Ding
semanticscholar   +1 more source

Free Boundary Problem for a Gas Bubble in a Liquid, and Exponential Stability of the Manifold of Spherically Symmetric Equilibria [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2022
We consider the dynamics of a gas bubble immersed in an incompressible fluid of fixed temperature, and focus on the relaxation of an expanding and contracting spherically symmetric bubble due to thermal effects.
Chen-Chih Lai, M. Weinstein
semanticscholar   +1 more source

A Data-Driven Space-Time-Parameter Reduced-Order Model with Manifold Learning for Coupled Problems: Application to Deformable Capsules Flowing in Microchannels

open access: yesEntropy, 2021
An innovative data-driven model-order reduction technique is proposed to model dilute micrometric or nanometric suspensions of microcapsules, i.e., microdrops protected in a thin hyperelastic membrane, which are used in Healthcare as innovative drug ...
Toufik Boubehziz   +5 more
doaj   +1 more source

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