Laboratory Simulation of Buoyancy Influenced Turbulent Mixing in the Ocean

海洋中受浮力影响的湍流混合的实验室模拟

• 批准号: 8817397
• 负责人: Charles Van Atta
• 金额: $ 36.95万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817397&HistoricalAwards=false
• 关键词: Laboratory; Simulation; Buoyancy; Influenced; Turbulent

In this project, laboratory experiments will be used to determine the quantitative influence of buoyancy effects due to stable stratification on turbulent mixing of heat, salt, and momentum. Results will be applied both to interpreting ocean microstructure measurements, and to computational ocean models. Specific problems include: parameterization of turbulent transport in terms of the Prandtl number, Vaisala frequency, Richardson number, large scale flow gradients and flow evolution history; the influence of background or turbulence-generated internal waves on mixing and measured quantities; and comparative studies of 2- versus 3-dimensional turbulent mixing and evaluation of recent theoretical scalings. New optical measurement techniques to be used include laser Doppler anemometry and laser-induced fluorescence.

在这个项目中，实验室实验将用于确定由于稳定分层引起的浮力效应对热、盐和动量的湍流混合的定量影响。研究结果将用于解释海洋微观结构测量和计算海洋模型。具体问题包括：用普朗特数、维萨拉频率、理查德森数、大尺度流动梯度和流动演化历史等参数化湍流输运；背景波或湍流产生的内波对混频和测量量的影响；以及二维和三维湍流混合的比较研究和最近理论标度的评价。新的光学测量技术包括激光多普勒风速测量和激光诱导荧光。