Turbulent Mixing in Buoyancy-Modified Flows

本文将对环境湍流横流中浮力羽流的速度场和浓度场以及在前进的盐楔的稳定密度界面上的混合进行实验测定。利用密度差但折射率相匹配的流体进行LDV诊断，测量速度。这两种结构在大气和海洋环境中的湍流输送中都是至关重要的。研究结果将在设计和分析的计算机代码以及湍流模型验证中得到应用。

An experimental determination will be made of the velocity and concentration fields of buoyant plumes in an ambient turbulent cross-flow, and of mixing across the stable density interface of an advancing saline wedge. Velocities will be measured with LDV diagnostics using fluids with density differences but matched index of refraction. Both configurations are of key importance in turbulent transport in the atmosphere and marine environment. The results of the research will find application both in computer codes for design and analysis, and in turbulence modeling validation.