大气和海洋之间泡沫层对风浪的稳定作用
Wind-wave stabilization by a foam layer between the atmosphere and the ocean
摘要:
这项研究的动机是最近发现的减少动量转移从强风到海洋。本文在中短表面波范围内研究了空气、泡沫和水三流体系统的Kelvin-Helmholtz不稳定性。对有效分离大气和海洋所需的泡沫层厚度进行了估算。由于三流体系统中的高密度对比,即使大气和海洋之间的相对薄的泡沫层也可以通过朝向较小尺度的不稳定性的波长偏移来提供水面的显著稳定。据证实,这种稳定定性地解释了所观察到的粗糙度和阻力的减少。
英文摘要:
The study is motivated by recent findings of the decrease in the momentum transfer from strong winds to sea. The Kelvin-Helmholtz instability (KHI) of a three-fluid system of air, foam and water is examined within the range of intermediately short surface waves. The foam layer thickness necessary for effective separation of the atmosphere and the ocean is estimated. Due to high density contrasts in the three-fluid system, even a relatively thin foam layer between the atmosphere and the ocean can provide a significant stabilization of the water surface by the wavelength shift of the instability towards smaller scales. It is conjectured that such stabilization qualitatively explains the observed reduction of roughness and drag.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。