Results 21 to 30 of about 7,385 (298)

Solving Differential Equations in R: Package deSolve

open access: yesJournal of Statistical Software, 2010
In this paper we present the R package deSolve to solve initial value problems (IVP) written as ordinary differential equations (ODE), differential algebraic equations (DAE) of index 0 or 1 and partial differential equations (PDE), the latter solved ...
Karline Soetaert   +2 more
doaj   +1 more source

Solution of nonlinear stiff differential equations for a three-phase no-load transformer using a Runge–Kutta implicit method [PDF]

open access: yesArchives of Electrical Engineering, 2022
The paper presents an approach to differential equation solutions for the stiff problem. The method of using the classic transformer model to study nonlinear steady states and to determine the current pulses appearing when the transformer is turned on is
Bernard Baron   +4 more
doaj   +1 more source

Optimizing the Coefficients of Numerical Differentiation Formulae Using Neural Networks

open access: yesIEEE Access, 2021
The use of a numerical differentiation formula (NDF) is an excellent method for solving stiff ordinary differential equations. However, the NDF method cannot fully adapt to all stiff systems.
Xinyu Yang   +3 more
doaj   +1 more source

Schur Decomposition for Stiff Differential Equations

open access: yesCoRR, 2023
A quantitative definition of numerical stiffness for initial value problems is proposed. Exponential integrators can effectively integrate linearly stiff systems, but they become expensive when the linear coefficient is a matrix, especially when the time step is adapted to maintain a prescribed local error.
Thoma Zoto, John C. Bowman
openaire   +2 more sources

A Hybrid Model for Fast and Efficient Simulation of Fluid Power Circuits With Small Volumes Utilizing a Recurrent Neural Network

open access: yesIEEE Access, 2022
The modeling and simulation of fluid power systems are essential parts of the real-time simulation of virtual prototypes of mobile working machines.
Stanislav Ustinov   +2 more
doaj   +1 more source

An efficient numerical algorithm for the transient analysis of high-frequency non-linear circuits [PDF]

open access: yes, 2002
The paper proposes a new approach for the discrete-time integration of non-linear differential equations that describe the behaviour of high-frequency circuits, in particular those containing complex equivalent-circuit models of microwave transistor ...
Condon, Marissa   +5 more
core   +1 more source

Explicit Stabilized Multirate Method For Stiff Differential Equations [PDF]

open access: yes, 2022
Stabilized Runge???Kutta methods are especially efficient for the numerical solution of large systems of stiff nonlinear differential equations because they are fully explicit.
Grote, Marcus J.   +3 more
core   +1 more source

Stiff-PINN: Physics-Informed Neural Network for Stiff Chemical Kinetics

open access: yes, 2021
The recently developed physics-informed neural network (PINN) has achieved success in many science and engineering disciplines by encoding physics laws into the loss functions of the neural network such that the network not only conforms to the ...
Zhiyu Shi (11361373)   +9 more
core   +1 more source

Converting DAE models to ODE models: application to reactive Rayleigh distillation [PDF]

open access: yes, 2013
This paper illustrates the application of an index reduction method to some differential algebraic equations (DAE) modelling the reactive Rayleigh distillation.
Monfreda, Fabien   +3 more
core   +1 more source

Relativistic resistive magneto-hydrodynamics code for high-energy heavy-ion collisions

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We construct a relativistic resistive magneto-hydrodynamic (RRMHD) numerical simulation code for high-energy heavy-ion collisions as a first designed code in the Milne coordinates. We split the system of differential equations into two parts, a non-stiff
Kouki Nakamura   +3 more
doaj   +1 more source

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