Abstract
A theory of tailing wavetrain generation for the precursor soliton generation in two-layer flow is presented by using averaged KdV equations (AKdV), which are derived by the authors in terms of Whitham's method of averaging[1,2]. From the AKdV equations, group velocities of the tailing wavetrain generation are obtained by means of generating conditions of the tailing wavetrains, furthermore an analytical solution of the tailing wavetrain generation is found theoretically. A comparison between the theoretical and numerical results is carried out in the present paper, which shows that the theoretical results are in good agreement with the numerical ones, obtained from the fKdV equation in two-layer flow with the depth of unity in the rest.
Similar content being viewed by others
References
Whitham GB. Nonlinear dispersive waves.Proc Roy Sci London, 1965, A283: 238–261
Whitham GB. Linear and nonlinear waves. New York: J Willey and Sons, 1974
Smyth NF. Modulation theory solution for resonant flow over topography.Proc Roy Sci London, 1987, A409: 79–97
Xu ZT et al. Theoretical amplitude and period of precursor soliton generation in two-layer flow.Acta Mechanica Sinica, 1996, 12(4): 323–337
Xu ZT et al. Moving velocities of precursor soliton generation in two-layer flow.Acta Mechanica Sinica, 1998, 14(4): 289–296
Xu ZT et al. Physical universals in problem of precursor soliton generation.Science in China, 1997, D40(3):306–314
Xu ZT et al. A numerical calculation of forced supercritical soliton in single-layer flow.J Ocean Univ Qingdao, 1994, 24(3): 309–319
Xu ZT et al. Theoretical mean wave resistance of precursor soliton generation in two-layer flow.Acta Mechanica Sinica, 1997, 13(1): 1–9
Xu ZT et al. Theoretical period and amplitude of locally forced precursor soliton generation in single-layer flow.Progress in Natural Science, 1997, 7(5): 573–582
Xu ZT et al. Theoretical mean wave resistance of precursor soliton generation in single-layer flow.Chin J Oceanol Limnol, 1996, 14(4): 330–336
Xu ZT et al. Velocities of precursor soliton generation in single-layer flow.Chin J Oceanol Limnol, 1997, 15(2): 130–136
Shen SS. Forced solitary waves and hydraulic falls in two-layer flow over topography.J Fluid Mech, 1992, 232: 563–612
Author information
Authors and Affiliations
Additional information
The project is supported by the National Natural Science Foundation of China (No. 49776284)
Rights and permissions
About this article
Cite this article
Zhaoting, X., Hao, X. & Shen, S.Sp. Tailing wavetrain generation in precursor soliton generation in two-layer flow. Acta Mech Sinica 16, 1–7 (2000). https://doi.org/10.1007/BF02487936
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02487936