Journal
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
Volume 4, Issue 2, Pages 85-99Publisher
ELSEVIER
DOI: 10.1016/j.joes.2019.01.003
Keywords
Sumudu transform scheme; Homotopy perturbation technique; RLW equations; Ion acoustic wave; Shallow water waves in oceans
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In this work, we apply an efficient analytical algorithm namely homotopy perturbation Sumudu transform method (HPSTM) to find the exact and approximate solutions of linear and nonlinear time-fractional regularized long wave (RLW) equations. The RLW equations describe the nature of ion acoustic waves in plasma and shallow water waves in oceans. The derived results are very significant and imperative for explaining various physical phenomenons. The suggested method basically demonstrates how two efficient techniques, the Sumudu transform scheme and the homotopy perturbation technique can be integrated and applied to find exact and approximate solutions of linear and nonlinear time-fractional RLW equations. The nonlinear expressions can be simply managed by application of He's polynomials. The result shows that the HPSTM is very powerful, efficient, and simple and it eliminates the round-off errors. It has been observed that the proposed technique can be widely employed to examine other real world problems. (C) 2019 Shanghai Jiaotong University. Published by Elsevier B.V.
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