Application of exact coherent structures to transition and turbulence

这个项目的目的是了解相干结构和设计方法，以防止旁路过渡到湍流和减少湍流壁阻力。湍流中的相干结构可以用精确运动方程的非线性解来识别。这种“精确”的相干结构有明确描述的雷诺数依赖性，适用于中等到非常大的雷诺数，远高于完整的Navier-Stokes计算的范围。了解湍流的基本原理有望带来更高效、更便宜的航空运输，以及更好的气候预测和短期天气预报工具。

This project aims to understand coherent structures and devise methods to prevent bypass transition to turbulence and reduce turbulent wall drag. Coherent structures in turbulence may be identified with nonlinear solutions of the exact equations of motion. Such "exact" coherent structures have their Reynolds number dependence described explicitly and apply for moderate to very large Reynolds numbers, well above the range of full Navier–Stokes calculations. Understanding the fundamentals of turbulence is expected to lead to more efficient and cheaper air transportation, and better tools for climate prediction and short-term weather forecasting.