Results 21 to 30 of about 1,171,815 (343)

Sensitivity Analysis for Transient Thermal Problems Using the Complex-Variable Finite Element Method

open access: yesApplied Sciences, 2022
Solving transient heat transfer equations is required to understand the evolution of temperature and heat flux. This physics is highly dependent on the materials and environmental conditions. If these factors change with time and temperature, the process
Juan-Sebastian Rincon-Tabares   +5 more
doaj   +1 more source

An ADM 3+1 formulation for Smooth Lattice General Relativity [PDF]

open access: yes, 1997
A new hybrid scheme for numerical relativity will be presented. The scheme will employ a 3-dimensional spacelike lattice to record the 3-metric while using the standard 3+1 ADM equations to evolve the lattice.
Barret J W   +5 more
core   +2 more sources

Modelo numérico do transporte de água e soluto no solo: I - simulação da distribuição de umidade Numerical model for water and solute transport in the soil: I - simulation of the moisture distribution

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2006
As equações diferenciais do movimento de água e do transporte de soluto em solo não saturado, considerando-se a existência de extração pela planta, foram resolvidas utilizando a técnica diferenças finitas. Para a implementação do modelo desenvolveu-se um
Marcus M. Corrêa   +5 more
doaj   +1 more source

Calculation of transonic flows around profiles with blunt and angled leading edges

open access: yesVietnam Journal of Mechanics, 2016
Transonic flow is a mixed flow of subsonic and supersonic regions. Because of this mixture, the solution of transonic flow problems is obtained only when solving the differential equations of motion with special treatments for the transition from ...
Hoang Thi Bich Ngoc, Nguyen Manh Hung
doaj   +1 more source

Addressing Integration Error for Polygonal Finite Elements Through Polynomial Projections: A Patch Test Connection [PDF]

open access: yes, 2013
Polygonal finite elements generally do not pass the patch test as a result of quadrature error in the evaluation of weak form integrals. In this work, we examine the consequences of lack of polynomial consistency and show that it can lead to a ...
Paulino, Glaucio H., Talischi, Cameron
core   +1 more source

Contemporary approach to computer aided simulation of servosystems

open access: yesVojnotehnički Glasnik, 1999
The approach to the problem of computer aided simulation is based on practical and easy-to-use realization of the servosystem operation in virtual (computer) reality.
Nenad Dodić
doaj   +1 more source

Efficiency of Higher Order Finite Elements for the Analysis of Seismic Wave Propagation [PDF]

open access: yes, 2000
The analysis of wave propagation problems in linear damped media must take into account both propagation features and attenuation process. To perform accurate numerical investigations by the finite differences or finite element method, one must consider ...
AKI   +15 more
core   +3 more sources

Finite difference magnetoelastic simulator

open access: yesOpen Research Europe, 2021
We describe an extension of the micromagnetic finite difference simulation software MuMax3 to solve elasto-magneto-dynamical problems. The new module allows for numerical simulations of magnetization and displacement dynamics in magnetostrictive materials and structures, including both direct and inverse magnetostriction.
Frederic Vanderveken   +7 more
openaire   +3 more sources

Chaotic finite difference operators

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2023
In this article, we analyze the chaotic behavior of finite difference operators associated with certain differential equations. Our examples range from numerical schemes for a birth-and-death model with proliferation to a class of second-order partial differential equations that includes the hyperbolic heat transfer equation, the telegraph equation ...
Marina Murillo-Arcila   +2 more
openaire   +5 more sources

Inhomogeneous dielectrics: conformal mapping and finite-element models

open access: yesOpen Physics, 2017
Field singularities in electrostatic and magnetostatic fields require special attention in field calculations, and today finite element methods are normally used, both in homogeneous and in inhomogeneous dielectric cases.
Costamagna Eugenio, Barba Paolo Di
doaj   +1 more source

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