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Sparse matrices for transient simulations with computing memory reduction
(2020-06-01)
Modified numerical integration methods and modelling have been analysed for application to simulations of electromagnetic transient phenomena in transmission lines. Both objectives are considered: minimize numerical errors ...
Numerical modeling of flow through an industrial burner orifice
(Elsevier B.V., 2014-06-01)
This paper presents numerical modeling of a turbulent natural gas flow through a non-premixed industrial burner of a slab reheating furnace. The furnace is equipped with diffusion side swirl burners capable of utilizing ...
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks
(Springer, 2021-04-22)
We present a numerical technique capable of handling evolving fractures in rocks triggered by coupled thermo-hydro-mechanical (THM) phenomena. The approach is formulated in the context of the finite-element method (FEM) ...
Analysis of the Stresses in Corrugated Sheets under Bending
(Univ Fed Sao Carlos, Dept Engenharia Materials, 2014-03-01)
This paper presents three different numerical models for the evaluation of the stresses in corrugated sheets under bending. Regarding the numerical simulations different approaches can be considered, i.e., a elastic linear ...
Integration Methods Used in Numerical Simulations of Electromagnetic Transients
(Institute of Electrical and Electronics Engineers (IEEE), 2011-12-01)
This paper made an analysis of some numerical integration methods that can be used in electromagnetic transient simulations. Among the existing methods, we analyzed the trapezoidal integration method (or Heun formula), ...
Thermal stress analysis of a directionally solidified Al-1 wt%Ni alloy casting
(Elsevier Science BvAmsterdamHolanda, 2010)
NUMERICAL QUENCHING FOR A SEMILINEAR PARABOLIC EQUATION WITH A POTENTIAL AND GENERAL NONLINEARITIES
(Universidad Católica del Norte, Departamento de Matemáticas, 2008)
Simple estimation of linear 1+1 D long wave run-up
(Oxford University Press, 2017-05)
An analytical solution is derived concerning the linear run-up for any given initial wave generated over a sloping bathymetry. Due to the simplicity of the linear formulation, complex transformations are unnecessary, hence ...
Determination of the critical coupling for oscillators in a ring
(American Institute of Physics (AIP), 2009-09-01)
We study a model of coupled oscillators with bidirectional first nearest neighbors coupling with periodic boundary conditions. We show that a stable phase-locked solution is decided by the oscillators at the borders between ...
Perturbations of asymptotically stable differential systems.
(1984)
We consider systems of differential equations of the form (1) x’ = f(t,x), for t ∊ [a,∞), x in some domain D ⊂ IRn and f ∈ c1 ([a,∞) × D) (a a fixed real number). We assume that the solution x(t,to,xo) of (1) defined for ...