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Numerical Solution for One Dimensional Linear Types of Parabolic Partial Differential Equation and Application to Heat Equation
Mathematics and Computer Science
Volume 5, Issue 4, July 2020, Pages: 76-85
Received: Mar. 10, 2020; Accepted: Apr. 7, 2020; Published: Oct. 12, 2020
Author
Kedir Aliyi Koroche, Department of Mathematics, College of Natural Sciences, Ambo University, Ambo, Ethiopia
Article Tools Abstract PDF (1959KB)
Abstract
In this paper, present solution of one-dimensional linear parabolic differential equation by using Forward difference, backward difference, and Crank Nicholson method. First, the solution domain is discretized using the uniform mesh for step length and time step. Then applying the proposed method, we discretize the linear parabolic equation at each grid point and then rearranging the obtained discretization scheme we obtain the system of equation generated with tri-diagonal coefficient matrix. Now applying inverse matrixes method and writing MATLAB code for this inverse matrixes method we obtain the solution of one-dimensional linear parabolic differential equation. The stability of each scheme analyses by using Von-Neumann stability analysis technique. To validate the applicability of the proposed method, two model example are considered and solved for different values of mesh sizes in both directions. The convergence has been shown in the sense of maximum absolute error (E) and Root mean error (E2). Also, condition number (K(A)) and Order of convergence are calculated. The stability of this Three class of numerical method is also guaranteed and also, the comparability of the stability of these three methods is presented by using the graphical and tabular form. The proposed method is validated via the same numerical test example. The present method approximate exact solution very well.
Keywords
Linear Parabolic Equation, Implicit Crank Nicholson Method, Root Mean Square Error, Condition Number, Order of Convergence
Kedir Aliyi Koroche, Numerical Solution for One Dimensional Linear Types of Parabolic Partial Differential Equation and Application to Heat Equation, Mathematics and Computer Science. Vol. 5, No. 4, 2020, pp. 76-85. doi: 10.11648/j.mcs.20200504.12
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