The invention relates to the technical field of fluid dynamics, in particular to a multi-scale wear-resistant super-hydrophobic drag reduction surface and a preparation method thereof.The multi-scale wear-resistant super-hydrophobic drag reduction surface comprises a base material with a drag reduction surface; the drag reduction surface comprises large ribs and grooves which are arranged at intervals and have trapezoidal sections; small ribs with rectangular sections are arranged on two side edges of the upper end surface of the large rib; and the super-hydrophobic coatings are coated on the surfaces of the small ribs, the large ribs and the grooves. The problems that the rib top coating is quickly invalid after being mechanically abraded and the contact area is increased, the resistance reduction efficiency is reduced and even the resistance is increased due to the fact that the groove is soaked in water can be solved. The super-hydrophobic coating, the small ribs, the large ribs and the groove structures are simple to prepare and easy to implement, and more excellent resistance reduction stability and efficiency can be achieved.
本发明涉及流体动力学技术领域,具体涉及一种多尺度耐磨超疏水减阻表面及其制备方法,包括:基材,其具有减阻表面;减阻表面包括间隔排列的截面为梯形的大肋和沟槽;所述大肋上端面两侧边设有截面为矩形的小肋;涂覆在小肋、大肋和沟槽表面的超疏水涂层。能够解决肋顶部涂层受到机械磨损后会迅速失效以及沟槽内浸水导致的接触面积增大,减阻效率降低甚至增阻的问题。超疏水涂层和小肋、大肋、沟槽结构制备简单,易于实现,可以达到更优异的减阻稳定性和效率。
Multi-scale wear-resistant super-hydrophobic anti-drag surface and preparation method thereof
一种多尺度耐磨超疏水减阻表面及其制备方法
31.05.2024
Patent
Elektronische Ressource
Chinesisch
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