Vortex Models of Turbulence and Large-Eddy Simulation

项目编号：9634222项目负责人：Pullin这是一项持续资助，旨在研究拉伸涡的动力学和运动学在描述湍流精细尺度中的作用，特别强调在大涡模拟的背景下，精细尺度和惯性尺度与大尺度的关系。研究将集中在三个方面：a)继续开发和测试日益复杂的流动的LES模型；b)完成纵向-速度结构函数的计算，然后计算其他湍流量（如压力和耗散）的其他结构函数；c)继续支持涡旋动力学的研究，这将增强我们对湍流结构的理解。这是先前工作的延伸，其中湍流的标准模型是在伦德格伦的拉伸涡模型的基础上发展起来的。

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.