Horizontal underwater manual ventilation cavitation simulating device

Abstract

The invention discloses a horizontal underwater manual ventilation cavitation simulating device, which comprises a projectile body and a sealing piston. The projectile body has a cavity with preset volume. A plurality of ventilation holes are arranged in the projectile body. The sealing piston is movably arranged in the cavity of the projectile body and is arranged at positions where the ventilation holes are arranged. The sealing piston and the projectile body are in closed fit with each other. By simulating the momentum transmission rod of an underground launching device, when the projectile body is launched, the projectile body is instantly accelerated to a high-speed state, the sealing piston cannot move immediately under the effect of inertia, the sealing piston and the projectile body move relatively and the cavity is communicated with the external world through the ventilation holes. In the high-speed moving process of the projectile body, the pressure of the area of the ventilation holes is much smaller than normal pressure in the cavity, air runs out of the ventilation holes at the moment to form a manual ventilation cavitation phenomenon.

Description

Technical field [0001] The invention relates to a simulated horizontal underwater artificial ventilation cavitation device. Background technique [0002] When the speed of an underwater object reaches a certain critical condition, the pressure around the local area of ​​the object will be lower than the saturated vapor pressure, and the nearby water body will vaporize, forming cavitation. Cavitation is common in many high-speed underwater movements such as propellers, submarines, and torpedoes. Local cavitation will cause irregular changes in the pressure around the object, which will seriously affect the trajectory of high-speed objects such as submarines and torpedoes. [0003] However, cavitation also has a good side. It will reduce the water resistance in the cavitation area. People use this to establish artificial ventilation cavitation technology to increase the cavitation phenomenon around moving objects and even achieve supercavitation. The purpose of resistance reduction...

AI Technical Summary

Problems solved by technology

However, people's research on the influence of cavitation pressure and the changing law of cavitation cycle is still in its infancy, and more in-depth experimental and theoretical research is needed.

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