Abstract
Since the high-speed objects will suffer the strong impact which could lead to the structural damage on the objects during the whole process of water-entry, the cushion mechanism has been the key issue of the water-entry process. According to the bubble dynamics and fluid mechanics, this paper proposed a method to reduce the water-entry impact by giving the cylinder an air nozzle, in order to study the law of its influence on the water-entry impact. The mathematical model of the head-jetting at cylinder was set up and the mechanism of reduce the water-entry impact was suggested. The impact pressure of the head-jetting at cylinder and the direct-entry at cylinder is compared and verified by using numerical simulation method.
| Original language | English |
|---|---|
| Pages (from-to) | 1691-1695 |
| Number of pages | 5 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 36 |
| Issue number | 8 |
| State | Published - 1 Aug 2015 |
Keywords
- Head-jetting
- Impact pressure
- Water-entry