Identifying a Space-Dependent Source Term and the Initial Value in a Time Fractional Diffusion-Wave Equation
نویسندگان
چکیده
This paper is focused on the inverse problem of identifying space-dependent source function and initial value time fractional nonhomogeneous diffusion-wave equation from noisy final measured data in a multi-dimensional case. A mollification regularization method based bilateral exponential kernel presented to solve ill-posedness for first time. Error estimates are obtained with an priori strategy posteriori choice rule find parameter. Numerical experiments interest show that our proposed effective robust respect perturbation noise data.
منابع مشابه
Landweber iterative method for identifying a space-dependent source for the time-fractional diffusion equation
*Correspondence: [email protected] School of Science, Lanzhou University of Technology, Lanzhou, Gansu 730050, P.R. China Abstract This paper is devoted to identifying an unknown source for a time-fractional diffusion equation with variable coefficients in a general bounded domain. This is an ill-posed problem. Firstly, we obtain a regularization solution by the Landweber iterative regularizatio...
متن کاملSimultaneous Inversion for Space-Dependent Diffusion Coefficient and Source Magnitude in the Time Fractional Diffusion Equation
We deal with an inverse problem of simultaneously identifying the space-dependent diffusion coefficient and the source magnitude in the time fractional diffusion equation from viewpoint of numerics. Such simultaneous inversion problem is often of severe ill-posedness as compared with that of determining a single coefficient function. The forward problem is solved by employing an implicit finite...
متن کاملInitial-boundary-value problems for the generalized multi-term time-fractional diffusion equation
Article history: Received 5 February 2010 Available online 26 August 2010 Submitted by P. Broadbridge
متن کاملA numerical scheme for space-time fractional advection-dispersion equation
In this paper, we develop a numerical resolution of the space-time fractional advection-dispersion equation. We utilize spectral-collocation method combining with a product integration technique in order to discretize the terms involving spatial fractional order derivatives that leads to a simple evaluation of the related terms. By using Bernstein polynomial basis, the problem is transformed in...
متن کاملFinite Element Solutions for the Space Fractional Diffusion Equation with a Nonlinear Source Term
and Applied Analysis 3 Baeumer et al. 8, 13 have proved existence and uniqueness of a strong solution for 1.2 using the semigroup theory when f x, t, u is globally Lipschitz continuous. Furthermore, when f x, t, u is locally Lipschitz continuous, existence of a unique strong solution has also been shown by introducing the cut-off function. Finite difference methods have been studied in 14–16 fo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematics
سال: 2023
ISSN: ['2227-7390']
DOI: https://doi.org/10.3390/math11061521