Surfzone Turbulence and Bubble Dynamics

将进行实地调查，研究气泡及其相关浮力在冲浪区的能量平衡中所起的作用。现有的测量结果与目前的紊流耗散模式不一致。假设与气泡相关的显著浮力通量可能对平均密度和耗散有重要影响。估计了由于空气夹带引起的耗散、空隙率和浮力通量的垂直结构。关于能量收支和冲浪区湍流的新理论将被定义和测试。

Trowbridge_0136088A field investigation will be carried out to study the role that bubbles and their associated buoyancy play in the energy balance of the surf zone. Existing measurements do not agree with present models of turbulent dissipation in this region. It is hypothesized that the a significant buoyancy flux associated with bubbles may have an important effect on mean density and, consequently, dissipation. The vertical structure of dissipation, void fraction, and buoyancy flux due to air entrainment will be estimated. New theory for energy budgets and surf zone turbulence will be defined and tested.