An algorithm based on a new DQM with modified exponential cubic B-splines for solving hyperbolic telegraph equation in (2 + 1) dimension

Nonlinear engineering: Modeling and application

article

Brajesh Kumar Singh¹  Pramod Kumar² 

[1] Department of Applied Mathematics, Babasaheb Bhimrao Ambedkar University;Department of Applied Mathematics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University

关键词: Differential quadrature method;    hyperbolic telegraph equation;    modified exponential cubic B-splines;    mExp-DQM;    Thomas algorithm;   

DOI  :  10.1515/nleng-2017-0106

来源: De Gruyter

【 摘 要 】

In this paper, a new method modified exponential cubic B - Spline differential quadrature method (mExp-DQM) has been developed for space discretization together with a time integration algorithm for numeric study of (2 + 1) dimensional hyperbolic telegraph equations. The mExp-DQM (i.e., differential quadrature method with modified exponential cubic B-splines as new basis) reduces the problem into an amenable system of ordinary differential equations (ODEs), in time. The time integration SSP-RK54 algorithm has been adopted to solve the resulting system of ODEs. The proposed method is shown stable by computing the eigenvalues of the coefficients matrices while the accuracy of the method is illustrated in terms of L 2 and L ∞ error norms for each problem. A comparison of mExp-DQM solutions with the results of the other numerical methods has been carried out for various space sizes and time step sizes.

【 授权许可】

Unknown