中文
相关论文

相关论文: Numerical identification of initial temperatures i…

200 篇论文

We study an inverse parabolic problem of identifying two source terms in heat equation with dynamic boundary conditions from a final time overdetermination data. Using a weak solution approach by Hasanov, the associated cost functional is…

偏微分方程分析 · 数学 2022-03-22 E. M. Ait Ben Hassi , S. E. Chorfi , L. Maniar

In Lipschitz domains, we study a Darcy-Forchheimer problem coupled with a singular heat equation by a nonlinear forcing term depending on the temperature. By singular we mean that the heat source corresponds to a Dirac measure. We establish…

数值分析 · 数学 2023-04-25 Alejandro Allendes , Gilberto Campaña , Enrique Otarola

This paper considers the initial-boundary value problem for the heat equation with a dynamic type boundary condition. Under some regularity, consistency and orthogonality conditions, the existence, uniqueness and continuous dependence upon…

数学物理 · 物理学 2013-06-21 Nazim B. Kerimov , Mansur I. Ismailov

We address the inverse problem of identifying a time-dependent source coefficient in a one-dimensional heat equation with a fractional Laplacian subject to Dirichlet boundary conditions and an integral nonlocal data. An a priori estimate is…

数值分析 · 数学 2025-11-21 Arshyn Altybay , Niyaz Tokmagambetov , Gulzat Nalzhupbayeva

This paper studies an inverse hyperbolic problem for the wave equation with dynamic boundary conditions. It consists of determining some forcing terms from the final overdetermination of the displacement. First, the Fr\'echet…

偏微分方程分析 · 数学 2022-12-28 S. E. Chorfi , G. El Guermai , L. Maniar , W. Zouhair

We study an inverse problem involving the restoration of two radiative potentials, not necessarily smooth, simultaneously with initial temperatures in parabolic equations with dynamic boundary conditions. We prove a Lipschitz stability…

偏微分方程分析 · 数学 2021-05-06 E. M. Ait Ben Hassi , S. E. Chorfi , L. Maniar

In this work we develop a Bayesian setting to infer unknown parameters in initial-boundary value problems related to linear parabolic partial differential equations. We realistically assume that the boundary data are noisy, for a given…

统计方法学 · 统计学 2017-09-13 Fabrizio Ruggeri , Zaid Sawlan , Marco Scavino , Raul Tempone

We consider the initial boundary value problem of non-homogeneous stochastic heat equation. The derivative of the solution with respect to time receives heavy random perturbation. The space boundary is Lipschitz and we impose non-zero…

偏微分方程分析 · 数学 2011-07-01 Tongkeun Chang , Kijung Lee , Minsuk Yang

This paper presents computational analysis of the inverse Stefan type free boundary problem, where information on the boundary heat flux is missing and must be found along with the temperature and the free boundary. We pursue optimal…

最优化与控制 · 数学 2018-07-24 Ugur G. Abdulla , Vladislav Bukshtynov , Ali Hagverdiyev

In this work the authors consider the recovery of the point source in the heat equation. The used data is the sparse boundary measurements. The uniqueness theorem of the inverse problem is given. After that, the numerical reconstruction is…

数值分析 · 数学 2025-02-06 Qiling Gu , Wenlong Zhang , Zhidong Zhang

This paper considerers the problem of computing the value of a solution of the heat equation at a given point inside a bounded domain after the initial time. It is assumed that the initial value of the solution inside the domain (possibly…

偏微分方程分析 · 数学 2010-02-02 Masaru Ikehata

We consider the inverse problem of reconstructing the interior boundary curve of a doubly connected domain from the knowledge of the temperature and the thermal flux on the exterior boundary curve. The use of the Laguerre transform in time…

数值分析 · 数学 2024-02-23 Roman Chapko , Leonidas Mindrinos

In this paper, we consider simultaneous reconstruction of the diffusion coefficient and initial state for a one-dimensional heat equation through boundary control and measurement. The boundary measurement is known to make the system exactly…

偏微分方程分析 · 数学 2016-05-18 Zhi-Xue Zhao , Mapundi Kondwani Banda , Bao-Zhu Guo

In this paper, we study an inverse problem for identifying the initial value in a space-time fractional diffusion equation from the final time data. We show the identifiability of this inverse problem by proving the existence of its unique…

偏微分方程分析 · 数学 2024-12-10 Mohamed BenSalah , Salih Tatar

From the final and interior temperature measurements identifying the source term with initial temperature simultaneously is an inverse heat conduction problem which is a kind of ill-posed. The optimal control framework has been found to be…

偏微分方程分析 · 数学 2020-06-16 Arzu Erdem Coşkun

In this paper, we study the flux identification problem for a nonlinear time-fractional viscoelastic equation with a general source function based on the boundary measurements. We prove that the direct problem is well-posed, i.e., the…

偏微分方程分析 · 数学 2024-07-24 Mohamed BenSalah , Salih Tatar , Suleyman Ulusoy , Masahiro Yamamoto

This article is concerned with the solution of a time-dependent shape identification problem. Specifically we consider the heat equation in a domain, which contains a time-dependent inclusion of zero temperature. The objective is to detect…

最优化与控制 · 数学 2019-06-17 Rahel Brügger , Helmut Harbrecht , Johannes Tausch

This paper deals with the numerical methods for the reconstruction of source term in linear parabolic equation from final overdetermination. We assume that the source term has the form f(x)h(t) and h(t) is given, which guarantees the…

偏微分方程分析 · 数学 2014-02-19 Xiaoping Fang , Youjun Deng , Jing Li

The aim of this paper is to develop stable and accurate numerical schemes for boundary integral formulations of the heat equation with Dirichlet boundary conditions. The accuracy of Galerkin discretisations for the resulting boundary…

数值分析 · 数学 2018-05-01 Alexey Chernov , Anne Reinarz

We consider the statistical linear inverse problem of recovering the unknown initial heat state from noisy interior measurements over an inhomogeneous domain of the solution to the heat equation at a fixed time instant. We employ…

统计方法学 · 统计学 2025-06-18 Matteo Giordano
‹ 上一页 1 2 3 10 下一页 ›