Results 1 to 10 of about 25,857 (298)

Variable Step Block Hybrid Method for Stiff Chemical Kinetics Problems

open access: yesApplied Sciences, 2022
Integration of a larger stiff system of initial value problems emerging from chemical kinetics models requires a method that is both efficient and accurate, with a large absolute stability region. To determine the solutions of the stiff chemical kinetics
Hira Soomro   +7 more
doaj   +2 more sources

Physics informed neural networks for fluid flow analysis with repetitive parameter initialization [PDF]

open access: yesScientific Reports
Physics-informed neural networks (PINNs) have been widely used to capture the behavior of physical systems governed by partial differential equations (PDEs), enabling the simulation of fluid dynamics across various scenarios.
Jongmok Lee   +7 more
doaj   +2 more sources

A new adaptive nonlinear numerical method for singular and stiff differential problems

open access: yesAlexandria Engineering Journal, 2023
In this work, a new adaptive numerical method is proposed for solving nonlinear, singular, and stiff initial value problems often encountered in real life.
Sania Qureshi   +6 more
doaj   +3 more sources

A comparison of stiff ODE solvers for atmospheric chemistry problems [PDF]

open access: yesAtmospheric Environment, 1996
In the operator splitting solution of atmospheric transport-chemistry problems modeling air pollution, a major task is the numerical integration of the stiff systems of ordinary differential equations describing the chemical transformations. In this paper a numerical comparison is presented between two special purpose solvers developed for this task.
J G Verwer
exaly   +5 more sources

An Approximate Optimization Method for Solving Stiff Ordinary Differential Equations With Combinational Mutation Strategy of Differential Evolution Algorithm

open access: yesMendel, 2022
This paper examines the implementation of simple combination mutation of differential evolution algorithm for solving stiff ordinary differential equations.
Werry Febrianti   +2 more
doaj   +1 more source

Haar wavelet collocation method for linear first order stiff differential equations [PDF]

open access: yesITM Web of Conferences, 2020
In general, there are countless types of problems encountered from different disciplines that can be represented by differential equations. These problems can be solved analytically in simpler cases; however, computational procedures are required for more ...
Atay Mehmet Tarık   +4 more
doaj   +1 more source

Convergence of the Fourth Order Variable Step Size Super Class of Block Backward Differentiation Formula for Solving Stiff Initial Value Problems

open access: yesUMYU Scientifica Journal, 2022
In many fields of study such as science and engineering, various real life problems are created as mathematical models before they are solved. These models often lead to special class of ordinary differential equations known as stiff ODEs.
Najamuddeen Bala, Hamisu Musa
doaj   +1 more source

An approximate numerical solution of some of the stiff linear boundary values problems of the second order using the method of matching with multiple shooting and interpolation. [PDF]

open access: yesمجلة التربية والعلم, 2009
The purpose of this research combining the algorithm of superposition with multiple shooting and interpolation designing for solving Stiff linear boundary value problems in ordinary differential equations.
Mohammed Altai, Suhaib Abdulbaqi
doaj   +1 more source

Techniques for Mixed Multiple Shooting for solve Stiff Initial Value Problems

open access: yesTikrit Journal of Pure Science, 2023
The object of the research is to develop a number of techniques on the subject of multiple shooting for solving stiff initial value problems, and these techniques increase the accuracy of numerical solutions of stiff problems, as well as reduce the ...
Khalid A. M. Khalaf, Bashir M. S. Khalaf
doaj   +1 more source

Numerical solution of stiff systems of differential equations arising from chemical reactions [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2014
Long time integration of large stiff systems of initial value problems, arising from chemical reactions, demands efficient methods with good accuracy and extensive absolute stability region.
Gholamreza Hojjati   +3 more
doaj   +1 more source

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