Zobrazeno 1 - 10
of 1 386
pro vyhledávání: '"Euler scheme"'
Autor:
Henda Ouertani, Mohamed Abdelwahed
Publikováno v:
Boundary Value Problems, Vol 2024, Iss 1, Pp 1-16 (2024)
Abstract We consider two algorithms for the resolution of the time-dependent Stokes problem with nonstandard boundary conditions by the domain-decomposition spectral-element method. The first algorithm (Elimination method) is based on the Uzawa metho
Externí odkaz:
https://doaj.org/article/588b85d3b9d24a6e89c1f3f62fbb8008
Publikováno v:
Results in Applied Mathematics, Vol 23, Iss , Pp 100482- (2024)
The aim of this article is to probe the convergence analysis of an efficient scheme, developed by Jentzen et al. (2011), for the stochastic Burgers’ equation (SBE) with term of additive noise. Although, the same scheme was used by Blomker et al. (2
Externí odkaz:
https://doaj.org/article/6bbf8a65c83b4517afaa58e344b20dce
Autor:
M. E.-B. Keddar, O. Belhamiti
Publikováno v:
Iranian Journal of Numerical Analysis and Optimization, Vol 14, Iss Issue 1, Pp 136-171 (2024)
This study presents a novel approach to understanding the global dynam-ics of COVID-19 transmission with vaccination based on a discrete-time model. We establish biologically meaningful constraints on the model parameters and prove the existence of a
Externí odkaz:
https://doaj.org/article/b64216704c76494b8b4ed00d16dc5f70
Autor:
Mohamed Abdelwahed, Nejmeddine Chorfi
Publikováno v:
Boundary Value Problems, Vol 2024, Iss 1, Pp 1-16 (2024)
Abstract This work deals with the spectral element discretization of the time-dependent Stokes problem in two- and three-dimensional domains. The boundary condition is defined on the normal component of the velocity and the tangential components of t
Externí odkaz:
https://doaj.org/article/94c653c76baa443fa6d272a73d202124
Autor:
Weiwen Wan, Rong An
Publikováno v:
AIMS Mathematics, Vol 9, Iss 1, Pp 453-480 (2024)
Based on the grad-div stabilization method, the first-order backward Euler and second-order BDF2 finite element schemes were studied for the approximations of the time-dependent penetrative convection equations. The proposed schemes are both uncondit
Externí odkaz:
https://doaj.org/article/2238a90b8b7947358827bef24c5a5933
Publikováno v:
Energies, Vol 17, Iss 18, p 4642 (2024)
This paper presents a dynamic homotopy technique that can be used to calculate a preliminary result for a power flow problem (PFP). This result can then be used as an initial estimate to efficiently solve the PFP using either the classical Newton-Rap
Externí odkaz:
https://doaj.org/article/0ef70ec80efe4c8f8ead7080e5597033
Autor:
Kęstutis Kubilius
Publikováno v:
Mathematics, Vol 12, Iss 16, p 2436 (2024)
In this paper, we focus on fractional stochastic differential equations (FSDEs) with a stochastic forcing term, i.e., to FSDE, we add a stochastic forcing term. Using the implicit scheme of Euler’s approximation, the conditions for the existence an
Externí odkaz:
https://doaj.org/article/bd8f7cad122d433391a850271a6a103d
Autor:
Jianyun Wang, Zhikun Tian
Publikováno v:
Results in Applied Mathematics, Vol 20, Iss , Pp 100404- (2023)
In this paper, we propose a new two-grid algorithm for solving two-dimensional Schrödinger equation in semi-discrete and fully discrete mixed finite element scheme, respectively. With this algorithm, the solution of the Schrödinger equation on a fi
Externí odkaz:
https://doaj.org/article/0718583bab564e42a61373f782dd658a
Publikováno v:
Mathematics, Vol 12, Iss 5, p 726 (2024)
In this paper, we construct a new two-grid algorithm of the finite element method for the Schrödinger equation in backward Euler and Crank–Nicolson fully discrete schemes. On the coarser grid, we solve coupled real and imaginary parts of the Schr
Externí odkaz:
https://doaj.org/article/e65130fb7180412cbf4b07bca9c8c5e8
Publikováno v:
Boundary Value Problems, Vol 2022, Iss 1, Pp 1-15 (2022)
Abstract We consider a time-dependent Navier–Stokes problem in dimension two and three provided with mixed boundary conditions. We propose an iterative algorithm and its implementation for resolving this considered problem. The discretization is ba
Externí odkaz:
https://doaj.org/article/7c1f35d7ac9e48d1ba44034243a2e448