The invention provides a method for forming, regulating and reducing a cavitation air film on the surface of a micro-structure modified sphere. The behavior of a water film on a sphere interface and the capture and the shape of a cavitation bubble are regulated and controlled by designing the position and the modification proportion of the microstructure. A water inlet cavitation generation strategy of cross-medium water inlet is combined with an air film resistance reduction technology, so that the underwater resistance reduction efficiency is effectively improved, an air film is formed on a full-etching surface and can also be formed on a partial-etching surface, that is, the air film is formed on surfaces with different microstructure modification proportions, and the air film resistance reduction efficiency is improved. Therefore, the problems of high energy consumption, damage to the surface of the aircraft, high maintenance cost and the like in the existing underwater drag reduction technology are solved.
本发明提供了一种微结构修饰小球表面空泡气膜形成、调控及减阻方法。通过设计微结构的位置与修饰比例来调控水膜在球体界面上的行为和空泡的捕获与形状。将跨介质入水的入水空泡产生策略与气膜减阻技术相结合,有效提高水下减阻效率,使得气膜不仅在全刻蚀表面上形成,而且能在部分刻蚀表面上形成,即在不同微结构修饰比例表面上形成,从而解决现有水下减阻技术中能耗高、对航行器表面有损伤和维护成本高等问题。
Microstructure modified sphere surface cavitation bubble gas film forming, regulating and resistance reducing method
一种微结构修饰小球表面空泡气膜形成、调控及减阻方法
2023-04-07
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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