Mixing at a Sheared, Fingering Interface

0117782 Eschmann/IUCThis project is a study of how the dynamics of a thermohaline intrusion changes as a function of stratification，shear strength，and ambient turbulence. 一个特别的焦点是盐指和机械产生的湍流之间的相互作用，以及两者联合收割机产生垂直通量的方式。 这项研究将在实验室环境中进行，旨在详细观察周围温暖的咸水流中冷淡水的被捕楔。 实验将在有和没有静止和振荡网格产生的湍流的情况下进行。 该实验旨在对一种普遍存在的海洋现象进行定性和定量描述，这种现象很难在现场观察。 如果成功的话，它将为具有不同温度和盐度特性的水团的混合提供重要的见解。

0117782Rehmann/UIUCThis project is a study of how the dynamics of a thermohaline intrusion changes as a function of stratification, shear strength, and ambient turbulence. A particular focus is the interaction between salt-fingers and mechanically generated turbulence and the way the two combine to produce vertical fluxes. The study will be carried out in a laboratory setting designed to permit the detailed observation of an arrested wedge of cold, fresh water in an ambient warm, salty flow. Experiments will be conducted with and without turbulence generated by stationary and oscillating grids. The experiment seeks to obtain a qualitative and quantitative description of a ubiquitous oceanic phenomenon that is difficult to observe in situ. If successful, it will provide significant insight into the mixing of water masses with different temperature and salinity properties.