On solitary wave in nonuniform shear currents
On solitary wave in nonuniform shear currents
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DOI：
10.1007/s42241-020-0051-z
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发表时间：
2020-08
影响因子：
2.5
通讯作者：
Zhan Wang;Binbin Zhao;W. Duan;R. Ertekin;R. Ertekin;M. Hayatdavoodi;M. Hayatdavoodi;Tian-yu Zhang
中科院分区：
文献类型：
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作者：
Zhan Wang;Binbin Zhao;W. Duan;R. Ertekin;R. Ertekin;M. Hayatdavoodi;M. Hayatdavoodi;Tian-yu Zhang
本文利用高阶格林-纳格迪(HLGN)模型，得到了非均匀剪切流作用下孤立波的定常解。我们主要研究强相反切变流中的大振幅孤立波。考虑了线型电流、二次型电流和三次型电流。特别对波速、波型、速度场、质点轨迹和涡量分布进行了研究。结果表明，非均匀剪切流的存在改变了孤立波的速度场和涡量场。
In this paper, steady solutions of solitary waves in the presence of nonuniform shear currents are obtained by use of the high-level Green-Naghdi (HLGN) model. We focus on large-amplitude solitary waves in strong opposing shear currents. The linear-type currents, quadratic-type currents and cubic-type currents are considered. In particular, the wave speed, wave profile, velocity field, particle trajectories and vorticity distribution are studied. It is demonstrated that presence of the nonuniform shear current modifies the velocity field and vorticity field of the solitary wave.