The Transitional and Turbulent Structure of Rotating Disk Boundary Layers

能源、材料加工、制造和空气动力学领域的设计优化往往依赖于与表面相邻的流体流动(壁面流动)，而且许多这样的流动是三维的。目前，人们对三维壁面流动的了解还很少，因此，我们的目标是对旋转圆盘上的典型三维壁面流动进行首次全面研究。在定制的设备中进行的实验将涵盖重要的流型(过渡和湍流)，新型传感器将量化详细的三维流动结构。通过阐明临界不稳定情景和揭示湍流标度结构，该项目将从根本上促进对三维壁流的物理理解以及分析和计算模型。

Design optimization in areas of energy, materials processing, manufacturing and aerodynamics often depends on fluid flows adjacent to surfaces (wall-flows), and many such flows are three-dimensional (3-D). At present, 3-D wall-flows are poorly understood, and thus we aim to provide the first comprehensive study of the prototypical 3-D wall-flow on a rotating disk. Experiments in a bespoke facility will cover the important flow regimes (transitional and turbulent), and novel sensors will quantify the detailed 3-D flow structure. By clarifying critical instability scenarios and revealing turbulent flow scaling structure, this project will fundamentally advance physical understanding and analytical and computational models of 3-D wall-flows