Multi-scale wear-resistant super-hydrophobic anti-drag surface and preparation method thereof

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 a