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The Fission Process of N-Waves Over a Mild Slope

Published online by Cambridge University Press:  05 May 2011

Y.-H. Lin  and
H.-H. Hwung
Y.-H. Lin*
Affiliation:
Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C. Department of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, U.S.A
H.-H. Hwung*
Affiliation:
Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.
*
*Ph.D and Visting Scientist
**Professor, corresponding auther
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Abstract

The aim of this paper is to investigate the mechanism of the fission process and the flow field of N-waves in the near-shore region. From the elaborate experimental analysis, a subsequence of a second soliton released during shoaling reigon is identified to realize the further evolution of N-waves over a sloping beach, in comparison with the non-fission case. The fission index is indicated by a dimensionless factor A0/d0, which is used to describe the nonlinearity as well. It is known that the reflecting wave and the breaking effect could easily initiate another soliton, especially for strong nonlinear case. A series of experiments were conducted in a super wave flume (300m × 5m × 5.2m) at Tainan Hydraulics Laboratory (THL), National Cheng Kung University (NCKU). The entire evolution of the leading and second solitons and the generation mechanism for the third soliton would be discussed in this paper.

Keywords

N-waveSolitary waveFission.
Type
Articles
Information
Journal of Mechanics , Volume 24 , Issue 2 , June 2008 , pp. 205 - 214
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2008

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