Compressible Vortex Dynamics and Turbulence: Reconnection, Core Dynamics, and Fine-Scale Organization

采用直接数值模拟的方法研究了可压缩性对湍流剪切流动中几种旋涡动力学现象的影响。重点研究了涡重联、涡核动力学以及有组织的涡旋结构和无序背景湍流之间的相互作用。研究的一个新特点是分析了初始条件对可压缩流动数值模拟的影响。这一研究既影响了高速流动技术，也影响了以更高的精度和经济性对这些和其他湍流进行数值模拟的技术。

Direct Numerical Simulation (DNS) will be carried out in a study of the effect of compressibility on several vortex dynamics phenomena in turbulent shear flow. The study is focused on vortex reconnection, vortex core dynamics, and the interaction between organized vortex structures and disorganized background turbulence. A novel feature of the research is an analysis of the effect of initial condition on numerical compressible flow simulations. This research impacts both the technology of high speed flows and the technology of simulating these and other turbulent flows numerically with greater accuracy and economy.