SGER: An Experimental Investigation of the Small Scales of Turbulence Near the Ground in the Atomospheric Surface Layer

SGER：大气表层近地面小尺度湍流的实验研究

• 批准号: 9528845
• 负责人: James Wallace
• 金额: $ 3万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-15 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9528845&HistoricalAwards=false
• 关键词: SGER; Experimental; Investigation; Small; Scales

ABSTRACT CTS 95-28845 WALLACE MARYLAND This proposal seeks to understand the physics of turbulent energy dissipation in the atmospheric surface layer, especially near the ground. The unique abilities of a 12-sensor hot-wire probe to measure the velocity vector and the velocity gradient tensor components in the surface layer will be exploited. From these measurements, the turbulent dissipation rate can be calculated using conditional analysis and joint probability density analysis. These measurements can significantly aid in the ability to model turbulence by two-equation modeling and Large Eddy Simulation.

摘要CTS 95-28845马里兰州华莱士 这项建议旨在了解大气表层，特别是近地面的湍流能量耗散的物理学。将利用12传感器热线探头测量速度矢量和速度梯度张量分量在表面层的独特能力。根据这些测量结果，可以使用条件分析和联合概率密度分析来计算湍流耗散率。这些测量可以显著地帮助通过双方程建模和大涡模拟来对湍流进行建模的能力。