Results 11 to 20 of about 3,003,723 (207)

Generalized Cahn-Hilliard equations based on a microforce balance [PDF]

open access: yesJournal of Applied Mathematics, 2003
We present some models of Cahn-Hilliard equations based on a microforce balance proposed by M. Gurtin. We then study the existence and uniqueness of solutions.
Alain Miranville
doaj   +2 more sources

Balance equations for physics-informed machine learning [PDF]

open access: yesHeliyon
Using traditional machine learning (ML) methods may produce results that are inconsistent with the laws of physics. In contrast, physics-based models of complex physical, biological, or engineering systems incorporate the laws of physics as constraints ...
Sandor M. Molnar   +2 more
doaj   +2 more sources

A remark on energy balance of the Navier–Stokes equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
In this short note, we provide a self-contained proof for the criterion $\nabla u\in L^\frac{5}{2}(0, T; L^2(\mathbb{R}^3))$ to Navier–Stokes equations energy balance, which improves some recent results on this problem.
Fan Wu
doaj   +2 more sources

Application of harmonic balance method for solving non-linear equations of motion

open access: yesMATEC Web of Conferences, 2018
This article presents the advantages and limitations of a harmonic balance method applied for solving non-linear equations of monition. This method provides an opportunity to find stable and unstable periodic solutions, which was demonstrated for a few ...
Kostek Robert
doaj   +2 more sources

Balance Equations

open access: yes, 2023
Borrowing from the mechanics of systems of particles, the balance equations for mass, linear momentum, and angular momentum are established. Next, the balance of energy is obtained after having realized that energy in general requires a more general ...
Morro A.   +3 more
core   +1 more source

On non-elliptic regions and solvability of balance equations for atmosphere dynamics Sobre regiões não elípticas e solvabilidade de equações de balanço para dinâmica da atmosfera

open access: yesRevista Brasileira de Meteorologia, 2007
To eliminate the fast gravitational waves of great amplitude, which are not observed in the real atmosphere, the initial fields for numerical schemes of atmosphere forecasting and modeling systems are usually adjusted dynamically by applying balance ...
Andrei Bourchtein, Ludmila Bourchtein
doaj   +1 more source

Homogenized Balance Equations for Nonlinear Poroelastic Composites

open access: yesApplied Sciences, 2021
Within this work, we upscale the equations that describe the pore-scale behaviour of nonlinear porous elastic composites, using the asymptotic homogenization technique in order to derive the macroscale effective governing equations. A porous hyperelastic
Laura Miller, Raimondo Penta
doaj   +1 more source

A frequency-domain approach to the analysis of stability and bifurcations in nonlinear systems described by differential-algebraic equations [PDF]

open access: yes, 2007
A general numerical technique is proposed for the assessment of the stability of periodic solutions and the determination of bifurcations for limit cycles in autonomous nonlinear systems represented by ordinary differential equations in the differential ...
Bonani, Fabrizio   +6 more
core   +1 more source

Simplified models for describing multitasking modes in living recognition systems [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purposeof this study is to explore the possibilities and create versions of simplified languages that describe the variety of dynamic modes during the alternating execution of multiple tasks. These languages can be used for an adequate description of
Golovina, Alina Andreevna   +1 more
doaj   +1 more source

An operator-splitting Galerkin/SUPG finite element method for population balance equations : stability and convergence [PDF]

open access: yes, 2012
We present a heterogeneous finite element method for the solution of a high-dimensional population balance equation, which depends both the physical and the internal property coordinates.
Sashikumaar Ganesan   +1 more
core   +1 more source

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