A B-spline finite element method is used to solve the regularized long wave equation numerically. This approach involves a Galerkin method with quadratic B-spline finite elements so that there is continuity of the dependent variable and its first derivative throughout the solution range. Time integr
Least-squares quadratic B-spline finite element method for the regularised long wave equation
✍ Scribed by İdris Daǧ
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 219 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0045-7825
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✦ Synopsis
An approximate solution consisting of a combination of the quadratic B-spline functions is incorporated into the least-squares method. An application of this method is presented for computing the solution of the Regularised Long Wave (RLW) equation. Quadratic B-spline solution of the RLW equation leads to tridiagonal matrix system which is solved easily by using the Thomas algorithm. Performance of this scheme is tested by obtaining a solitary wave solution of the equation and by studying the development of the undular bore. Numerical results of the proposed algorithm is shown to have higher accuracy in terms of L 2 -error norm compared studying the migration of the solitary wave. A Fourier stability analysis of the method is investigated.
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It has been brought to the attention of the Editors and Publisher that there was a signi®cant omission in the references of the above paper. The 1997 Ph.D. Thesis of Dr. Abdul-Kadir Dogan entitled ``Petrov±Galerkin ®nite element methods'' (University of Wales (Bangor)) should be cited in the refere