نتایج جستجو برای: time fractional inverse diffusion problem

تعداد نتایج: 2776381  

Journal: :Journal of Mathematical Sciences 2022

We establish sufficient conditions for the unique solvability of inverse problem finding two unknown functions from a Schwarz-type space smooth rapidly decreasing at infinity on right-hand side diffusion equation with Caputo–Djrbashian time fractional derivative. In this case, we use overdetermination integral respect to time.

Journal: :iranian journal of science and technology (sciences) 2013
b. loghmani

in this paper, a new numerical method for solving time-fractional diffusion equations is introduced. for this purpose, finite difference scheme for discretization in time and chebyshev collocation method is applied. also, to simplify application of the method, the matrix form of the suggested method is obtained. illustrative examples show that the proposed method is very efficient and accurate.

Journal: :Inverse Problems 2023

In this paper, we are concerned with the stochastic time-fractional diffusion-wave equations in a Hilbert space. The main objective of paper is to establish properties weak solutions initial-boundary value problem, such as existence, uniqueness and regularity estimates. Moreover, apply obtained theories an inverse source problem. problem under boundary measurements proved.

2011
Salman A. Malik Mokhtar Kirane

We consider the inverse problem of finding the temperature distribution and the heat source whenever the temperatures at the initial time and the final time are given. The problem considered is one dimensional and the unknown heat source is supposed to be space dependent only. The existence and uniqueness results are proved.

Journal: :Applied Mathematics and Computation 2014
Khaled M. Furati Olaniyi Samuel Iyiola Mokhtar Kirane

We propose a method for determining the solution and source term of a generalized timefractional diffusion equation. The method is based on selecting a bi-orthogonal basis of L space corresponding to a nonself-adjoint boundary value problem. Uniqueness is proven and an existence result is obtained for smooth initial and final conditions. The asymptotic behavior of the generalized Mittag–Leffler...

Journal: :iranian journal of science and technology (sciences) 2014
z. avazzadeh

in this work, we apply the radial basis functions for solving the time fractional diffusion-wave equation defined by caputo sense for                         . the problem is discretized in the time direction based on finite difference scheme and is continuously approximated by using the radial basis functions in the space direction which achieves the semi-discrete solution. numerical results s...

Journal: :Computers & Mathematics with Applications 2010
Mark M. Meerschaert Yong Zhang Boris Baeumer

Previous work [51] showed how to solve time-fractional diffusion equations by particle tracking. This paper extends the method to the case where the order of the fractional time derivative is greater than one. A subordination approach treats the fractional time derivative as a random time change of the corresponding Cauchy problem, with a first derivative in time. One novel feature of the time ...

2006
A. M. MATHAI

This paper deals with the investigation of a closed form solution of a generalized fractional reaction-diffusion equation. The solution of the proposed problem is developed in a compact form in terms of the H-function by the application of direct and inverse Laplace and Fourier transforms. Fractional order moments and the asymptotic expansion of the solution are also obtained.

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