Research Initiation Award: Differential Diffusion and Interscale Spectral Transfer of Multiple Scalars in Turbulent Mixing

研究启动奖：湍流混合中多标量的微分扩散和跨尺度谱传递

• 批准号: 9307973
• 负责人: Pui-Kuen Yeung
• 金额: $ 9.98万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9307973&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Differential; Diffusion

Funded under a Research Initiation Award, numerical simulations will be carried out of the turbulent transport of both heat and chemical species. The issue is differential diffusion, in which the molecular transport rates of heat, species, and momentum are different. In the presence of turbulence, these differential diffusion effects are important but poorly understood and little investigated. The approach is via Direct Numerical Simulations based on spectral methods. The research has application to turbulent combustion, and mixing of chemical species in reactors.

由研究启动奖资助，数字 模拟将进行的湍流输送的 热量和化学物质问题在于差异化 扩散，其中热的分子传输速率， 物种和动量是不同的。存在下 湍流，这些微分扩散效应是重要的 但人们对此知之甚少，也很少进行调查。该方法是 通过基于谱方法的直接数值模拟。 该研究可应用于湍流燃烧， 反应器中化学物质的混合。