Results 21 to 30 of about 1,168,562 (287)
Turbulent flows in channels and pipes
Vietnam Journal of Mechanics, 2007 A variational principle for channel and pipe flows of incompressible viscous fluid is proposed. For low Reynolds numbers this variational principle reduces to the principle of minimum dissipation. For high Reynolds numbers it enables one to calculate the
Khanh Le Chau
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Gaussian time-dependent variational principle for the finite-temperature anharmonic lattice dynamics
Physical Review Research, 2021 The anharmonic lattice is a representative example of an interacting, bosonic, many-body system. The self-consistent harmonic approximation has proven versatile for the study of the equilibrium properties of anharmonic lattices.
Jae-Mo Lihm, Cheol-Hwan Park
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, 2004 Variational integrators are a class of discretizations for mechanical systems which are derived by discretizing Hamilton's principle of stationary action.
West, Matthew
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Journal of the European Optical Society-Rapid Publications, 2023 The parameter dynamics of super-sech and super-Gaussian pulses for the perturbed nonlinear Schrödinger’s equation with power-law nonlinearity is obtained in this article. The variational principle successfully recovers this dynamical system.
Zayed Elsayed M.E. +10 more
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Variational Principles for Consolidation
Soils and Foundations, 1971 ABSTRACT The purpose of this paper is to derive, as a basis of the finite element method, a generalized variational principle for consolidation under the following assumptions: Soil is inhomogeneous, anisotropically elastic with respect to effective stress, and saturated by incompressible water; deformation of soil does not depend on pore water ...
YOKOO, YOSHITSURA +2 more
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Relative Entropy and Variational Properties of Generalized Gibbsian Measures [PDF]
, 2004 We study the relative entropy density for generalized Gibbs measures. We first show its existence and obtain a familiar expression in terms of entropy and relative energy for a class of “almost Gibbsian measures” (almost sure continuity of conditional ...
Ny, Arnaud Le, +12 more
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On the structure of minimizers of causal variational principles in the non-compact and equivariant settings [PDF]
, 2012 We derive the Euler-Lagrange equations for minimizers of causal variational principles in the non-compact setting with constraints, possibly prescribing symmetries.
Finster, Felix, Bernard, Yann
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Demonstratio Mathematica, 2022 This paper presents some variants of minimal point theorem together with corresponding variants of Ekeland variational principle. In the second part of this article, there is a discussion on Ekeland variational principle and minimal point theorem ...
Meghea Irina, Stamin Cristina Stefania
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A Variational Principle in Krein Space [PDF]
Transactions of the American Mathematical Society, 1994 A variational characterization, involving a max-inf of the Rayleigh quotient, is established for certain eigenvalues of a wide class of definitizable selfadjoint operators Q in a Krein space.
Binding, Paul, Najman, Branko
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Vectorial Ekeland Variational Principles and Inclusion Problems in Cone Quasi-Uniform Spaces
Abstract and Applied Analysis, 2012 Some new vectorial Ekeland variational principles in cone quasi-uniform spaces are proved. Some new equivalent principles, vectorial quasivariational inclusion principle, vectorial quasi-optimization principle, vectorial quasiequilibrium principle are ...
Jiang Zhu +3 more
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