Results 31 to 40 of about 225,512 (313)

On the accuracy of invariant numerical schemes

open access: yesCommunications on Pure and Applied Analysis, 2011
In this paper we present a method of construction of invariant numerical schemes for partial differential equations. The resulting schemes preserve the Lie-symmetry group of the continuous equation and they are at least as accurate as the original scheme.
Chhay, Marx, Hamdouni, Aziz
openaire   +2 more sources

Simulations of Compressible, Diffusive, Reactive Flows with Detailed Chemistry Using a High-Order Hybrid WENO-CD Scheme [PDF]

open access: yes, 2012
A hybrid weighted essentially non-oscillatory (WENO)/centered-difference (CD) numerical method, with low numerical dissipation, high-order shock-capturing, and structured adaptive mesh refinement (SAMR), has been developed for the direct numerical ...
Ziegler, John Lewis (Jack)
core   +1 more source

MATHEMATICAL MODELING OF HEATED GAS DISSOCIATION PROCESS INTO THE RESERVOIR SATURATED WITH METHANE AND ITS HYDRATE

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2018
The article presents the mathematical modeling of heated gas dissociation process into the reservoir saturated with methane and its hydrate. We studied how different factors has affected the dissociation process.
N. G. Musakaev   +2 more
doaj   +1 more source

Trigonometrically Fitted Improved Hybrid Method for Oscillatory Problems

open access: yesComputer Sciences & Mathematics Forum, 2023
Presented in this paper is a trigonometrically fitted scheme based on a class of improved hybrid method for the numerical integration of oscillatory problems.
Yusuf Dauda Jikantoro   +2 more
doaj   +1 more source

Explicit Solution of the Time Domain Volume Integral Equation Using a Stable Predictor-Corrector Scheme [PDF]

open access: yes, 2012
An explicit marching-on-in-time (MOT) scheme for solving the time domain volume integral equation is presented. The proposed method achieves its stability by employing, at each time step, a corrector scheme, which updates/corrects fields computed by the ...
Bağcı, H   +11 more
core   +1 more source

Numerical investigation of heat transfer in the nanofluids under the impact of length and radius of carbon nanotubes

open access: yesOpen Physics, 2022
The investigation of thermal transport in the nanofluid over a curved Riga surface is significant and extensively used in many industries as well as in engineering.
Adnan   +6 more
doaj   +1 more source

NUMERICAL OPTIMIZATION OF A MULTIPHYSICS CALCULATION SCHEME [PDF]

open access: yesEPJ Web of Conferences, 2021
This work concerns the numerical optimization of a multiphysics calculation scheme. The considered application is a 5x5 Pressurized Water Reactor (PWR) assemblies mini-core surrounded by radial and axial reflectors. The scenario adopted for the analysis is steady-state nominal conditions and fission products set to the equilibrium concentration.
Cattaneo, Paolo   +4 more
openaire   +4 more sources

Low Mach Asymptotic Preserving Scheme for the Euler-Korteweg Model [PDF]

open access: yes, 2013
We present an all speed scheme for the Euler-Korteweg model. We study a semi-implicit time-discretisation which treats the terms, which are stiff for low Mach numbers, implicitly and thereby avoids a dependence of the timestep restriction on the Mach ...
Giesselmann, Jan
core   +1 more source

gL1 Scheme for Solving a Class of Generalized Time-Fractional Diffusion Equations

open access: yesMathematics, 2022
In this paper, a numerical scheme based on a general temporal mesh is constructed for a generalized time-fractional diffusion problem of order α. The main idea involves the generalized linear interpolation and so we term the numerical scheme the gL1 ...
Xuhao Li, Patricia J. Y. Wong
doaj   +1 more source

Numerical stabilization of the Stokes problem in vorticity–velocity–pressure formulation [PDF]

open access: yes, 2007
We work on a vorticity, velocity and pressure formulation of the bidimensional Stokes problem for incompressible fluids. In previous papers, the authors have developed a natural implementation of this scheme.
Salaün, Michel, Salmon, Stéphanie
core   +1 more source

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