Experimental Study of Deep-Water Wave Instability : Part 2. Evolution of The Initially-Modulated Wave Train

심해파의 불안정성에 관한 실험 연구 -제2부 : 초기변형파의 불안정성

  • 조원철 (중앙대학교 기술과학연구소)
  • Received : 1993.01.25
  • Published : 1993.03.31


Experiment on the instability and breaking of the initially modulated deep-water wave train (in wave amplitude or in wave frequency) is performed to investigate the effect of the initial modulation on nonlinear wave evolution. Wave amplitude and frequency modulations are developed earlier and larger than in the case of the uniform deep-water wave trains. However, for small wave steepness in the initially amplitude-modulated wave train, the wave train becomes demodulated and nearly returns to the original wave form at the end of the wave evolution far downstream from the breaking region, with energy returning to the fundamental wave frequency.