Results 41 to 50 of about 1,753,142 (356)

Choosing the optimal multi-point iterative method for the Colebrook flow friction equation -- Numerical validation [PDF]

open access: yesPraks, P.; Brki\'c, D. Choosing the Optimal Multi-Point Iterative Method for the Colebrook Flow Friction Equation. Processes 2018, 6(8), 130, 2018
The Colebrook equation $\zeta$ is implicitly given in respect to the unknown flow friction factor $\lambda$; $\lambda=\zeta(Re,\epsilon^*,\lambda)$ which cannot be expressed explicitly in exact way without simplifications and use of approximate calculus.
arxiv   +1 more source

Iterative solution of the pressure problem for the multiphase filtration

open access: yesMathematical Modelling and Analysis, 2012
Applied problems of oil and gas recovery are studied numerically using the mathematical models of multiphase fluid flows in porous media. The basic model includes the continuity equations and the Darcy laws for each phase, as well as the algebraic ...
Petr Vabishchevich, Maria Vasil'eva
doaj   +1 more source

Aboodh Transform Iterative Method for Spatial Diffusion of a Biological Population with Fractional-Order

open access: yesMathematics, 2021
In this paper, a new approximate analytical method is proposed for solving the fractional biological population model, the fractional derivative is described in the Caputo sense. This method is based upon the Aboodh transform method and the new iterative
Gbenga O. Ojo, Nazim I. Mahmudov
doaj   +1 more source

Approximate k-space models and Deep Learning for fast photoacoustic reconstruction [PDF]

open access: yes, 2018
We present a framework for accelerated iterative reconstructions using a fast and approximate forward model that is based on k-space methods for photoacoustic tomography. The approximate model introduces aliasing artefacts in the gradient information for
Arridge, Simon   +6 more
core   +2 more sources

New SOR-like methods for solving the Sylvester equation

open access: yesOpen Mathematics, 2014
We present new iterative methods for solving the Sylvester equation belonging to the class of SOR-like methods, based on the SOR (Successive Over-Relaxation) method for solving linear systems.
Kierzkowski Jakub
doaj   +1 more source

A splitting iterative method for solving the neutron transport equation

open access: yesMathematical Modelling and Analysis, 2009
This paper presents an iterative method based on a self‐adjoint and m‐accretive splitting for the numerical treatment of the steady state neutron transport equation.
Onana Awono, Jacques Tagoudjeu
doaj   +1 more source

New Iterative Method of Solving Nonlinear Equations in Fluid Mechanics

open access: yesInternational Journal of Applied Mechanics and Engineering, 2021
This paper presents the results of applying a new iterative method to linear and nonlinear fractional partial differential equations in fluid mechanics.
M. Paliivets   +4 more
doaj   +1 more source

Chebyshev Inertial Iteration for Accelerating Fixed-Point Iterations [PDF]

open access: yes, 2020
A novel method which is called the Chebyshev inertial iteration for accelerating the convergence speed of fixed-point iterations is presented. The Chebyshev inertial iteration can be regarded as a valiant of the successive over relaxation or Krasnosel'ski\v{\i}-Mann iteration utilizing the inverse of roots of a Chebyshev polynomial as iteration ...
arxiv   +1 more source

CONSTRUÇÃO DA CURVA DE EQUILÍBRIO LÍQUIDO-VAPOR USANDO UMA EQUAÇÃO DE ESTADO CÚBICA: USO DO EXCEL NO ENSINO DE FÍSICO-QUÍMICA

open access: yesQuímica Nova, 2016
Cubic equations of state are able to predict the liquid-vapour coexistence curve of volatile substances. However, this property is rarely used to teach Physical Chemistry because solving the resulting equations require numerical technics and many ...
Josefredo R. Pliego Jr.
doaj   +1 more source

Multi-iterative methods

open access: yesComputers & Mathematics with Applications, 1993
AbstractA general class of iterative methods is introduced for solving positive definite linear systems Ax = b. These methods use two or more different iterative techniques and each of them reduces the error by a constant factor in a different subspace of Rn.
openaire   +2 more sources

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