Supercavitation navigation body and cavitation flow control method using wake flow ejection

A supercavitation vehicle and vehicle technology, applied in the direction of hydrodynamic characteristics/hydrostatic characteristics, hull, hull design, etc., can solve problems that restrict the internal geometric layout and voyage of supercavitation vehicles, and achieve saving Spatial layout, reduction of deflection angle and turbulence intensity, effect of reducing cavitation pulsation problem

Active Publication Date: 2021-06-08
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] At present, the problem of cavitation gas source restricts the internal geometric layout and voyage of the supercavitating vehicle. I...

Method used

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  • Supercavitation navigation body and cavitation flow control method using wake flow ejection
  • Supercavitation navigation body and cavitation flow control method using wake flow ejection
  • Supercavitation navigation body and cavitation flow control method using wake flow ejection

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in t...

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Abstract

The invention provides a supercavitation navigation body and a cavitation flow control method using wake flow ejection. The navigation body comprises a cavitator and a navigation body, the cavitator is arranged at the head of the navigation body, a vent hole is formed in the rear side of the cavitator, an air chamber is arranged in the navigation body, the air chamber and the vent hole are connected through a vent pipeline, an air valve is arranged on the vent pipeline, and an exhaust nozzle capable of spraying gas jet flow is arranged at the tail of the navigation body. After initial cavitation is formed in the navigation body, a low-pressure gas channel is formed from the cavitator to the exhaust nozzle, the gas jet flow sprayed out of the exhaust nozzle flows back forwards in a natural entrainment mode, a gas is supplemented for the cavitation, the cavitation form is maintained, and therefore active control over the cavitation form and the stability problem is achieved.

Description

technical field [0001] The invention relates to the application field of the supercavitation technology of an underwater vehicle, in particular to a supercavitation vehicle and a cavitation flow control method using wake ejection thereof. Background technique [0002] The basic principle of ventilated supercavitation technology is to pass non-condensable gas behind the cavitator at the head of the vehicle to generate cavitation bubbles that stably wrap the vehicle and isolate the surface of the vehicle from the liquid medium. The viscosity of the gas is One-thousandth of water, which can greatly reduce the frictional resistance of the vehicle body, and can achieve a drag reduction rate of more than 90%, showing a huge application prospect. [0003] Supercavitation drag reduction technology has completely changed the operating mode of underwater vehicles, which will inevitably lead to technological changes in underwater vehicles and weapons. At present, supercavitation techn...

Claims

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Application Information

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IPC IPC(8): B63B1/38
CPCB63B1/38B63B2001/382Y02T70/10
Inventor 赵小宇向敏张为华刘波谢泽阳李尚中
Owner NAT UNIV OF DEFENSE TECH
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