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Bilinear form, solitons, breathers and lumps of a (3 + 1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt equation in ocean dynamics, fluid mechanics and plasma physics

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A Comment to this article was published on 06 August 2020

Abstract

A \((3+1)\)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt equation in ocean dynamics, fluid mechanics and plasma physics is investigated in this paper. Bilinear form, soliton and breather solutions are derived via the Hirota method. Lump solutions are also obtained. Amplitudes of the solitons are proportional to the coefficient \(h_1\), while inversely proportional to the coefficient \(h_2\). Velocities of the solitons are proportional to the coefficients \(h_1\), \(h_3\), \(h_4\), \(h_5\) and \(h_9\). Elastic and inelastic interactions between the solitons are graphically illustrated. Based on the two-soliton solutions, breathers and periodic line waves are presented. We find that the lumps propagate along the straight lines affected by \(h_4\) and \(h_9\). Both the amplitudes of the hump and valleys of the lump are proportional to \(h_4\), while inversely proportional to \(h_2\). It is also revealed that the amplitude of the hump of the lump is eight times as large as the amplitudes of the valleys of the lump. Graphical investigation indicates that the lump which consists of one hump and two valleys is localized in all directions and propagates stably.

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Acknowledgements

The authors express sincere thanks to the members of our discussion group for their valuable suggestions. This work has been supported by the National Natural Science Foundation of China under Grant Nos. 11772017 and 11272023 and by the Fundamental Research Funds for the Central Universities [Grant Number 50100002016105010].

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Authors and Affiliations

  1. Ministry-of-Education Key Laboratory of Fluid Mechanics and National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China

    Yu-Jie Feng, Yi-Tian Gao, Liu-Qing Li & Ting-Ting Jia

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  1. Yu-Jie Feng
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  2. Yi-Tian Gao
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  4. Ting-Ting Jia
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Correspondence to Yi-Tian Gao.

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Feng, YJ., Gao, YT., Li, LQ. et al. Bilinear form, solitons, breathers and lumps of a (3 + 1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt equation in ocean dynamics, fluid mechanics and plasma physics. Eur. Phys. J. Plus 135, 272 (2020). https://doi.org/10.1140/epjp/s13360-020-00204-2

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