Correlation dimension analysis and capillary wave turbulence in Dragon-Wash phenomena

• 来源期刊: 中国物理B（英文版）
• 关键词: capillary wave wave turbulence correlation dimension
• 年，卷（期）: 2008,（2）
• 页码范围: 637-643
• 页数: 7页
• 语种: 英文

摘要

This paper describes the evolution of surface capillary waves of deep water excited by gradually increasing the lateral external force at a single frequency.The vertical velocities of the water surface are measured by using a Polytec Laser Vibrometer with a thin layer of aluminium powder scattering on the surface to reflect the laser beam.Nonlinear interaction processes result in a stationary Fourier spectrum of the vertical surface velocities (the same as the surface elevation),i.e.Iω～ω-3.5.The observed spectrum can be interpreted as a wave-turbulent Kolmogorov spectrum for the case of 'narrowband pumping' for a direct cascade of energy.Correlation dimension analysis of the whole development process reveals four distinct stages during the wave structure development and identifies the wave turbulence stage.