The flow around porously coated cylinders

流体力学研究领域的相互作用的流动与高度多孔/渗透性的表面层进行了创新的潜力很大。可以预期，可以实现减阻、节能、降噪和减振的新的可能性。不幸的是，在这一领域的知识是缺乏的，即使是简单的几何形状，如周围的流动完全或部分多孔涂层圆柱体，长方体或球体。因此，在本项目中，应研究部分涂有多孔、可渗透薄表面层的圆柱体周围的流动。该项目的目的是详细阐述多孔涂层减少圆柱体和方形圆柱体阻力的基本知识，并通过重新分析测量数据来定义无量纲数，从而控制问题并将结果转移到其他尺度（相似性规则）。

Fluid mechanical research in the field of interaction of flows with highly porous / permeable surface layers carries a high potential for innovation. It is expected that new possibilities of drag reduction, energy saving, noise reduction and vibration damping can be achieved. Unfortunately, in this area the knowledge is lacking even for simple geometries, such as flow around completely or partially porous coated cylinders, cuboids or spheres. Therefore, within this project, the flow around cylindrical bodies which are coated partially with porous, permeable thin surface layers shall be investigated. The aim of the project is to elaborate the basic knowledge of drag reduction of circular and square cylinders by porous coating and to define dimensionless numbers by reanalysis of measurement data, which control the problem and allow to transfer results to other scales (similarity rules).