Vortex Models of Turbulence and Large-Eddy Simulation

湍流涡模型和大涡模拟

• 批准号: 9634222
• 负责人: Dale Pullin
• 金额: $ 25万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634222&HistoricalAwards=false
• 关键词: Vortex; Models; Turbulence; Large; Eddy

ABSTRACT Proposal Number: 9634222 Principal Investigator: Pullin This is a continuation grant to investigate the role of dynamics and kinematics of stretched vortices in describing the fine scales of turbulence with special emphasis on the relation of the fine and inertial range scales to the large scales in the context of large eddy simulation. The research will focus on three areas: a) continued development and testing of an LES model of for flows of increasing complexity, b) completion of the calculation of the longitudinal-velocity structure functions followed by the calculation of other structure functions of other turbulence quantities such as pressure and dissipation, and c) continuation of supporting research in vortex dynamics which will enhance our understanding of the structure of turbulence. This is an extension of prior work in which a standard model of turbulence was developed on the basis of the stretched vortex model of Lundgren.

摘要 建议编号：9634222 主要研究者：Pullin 这是一笔连续补助金，用于调查 拉伸涡的动力学和运动学 湍流的精细尺度，特别强调 精细和惯性距离尺度与大尺度的关系 大涡模拟中的尺度。 的 研究将集中在三个方面：a）持续发展 和测试的LES模型的流量增加 复杂性，B）完成计算 速度结构函数， 其它湍流其它结构函数计算 压力和耗散等量，以及c） 继续支持涡流动力学研究， 将增强我们对 急流. 这是先前工作的扩展，其中 湍流的标准模型是在 Lundgren的拉伸涡旋模型