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Vortex generator for propeller type ship and ship

A vortex generator and vortex generation technology, which is applied in the field of marine transportation, can solve the problems of propeller blade cavitation, increased ship resistance, and low vortex strength, and achieve the effects of vortex concentration, reduced pulsating pressure, and consistent vortex size

Active Publication Date: 2021-06-18
ZHEJIANG OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of cavitation, vibration and noise at the propeller blade of the ship due to the small and low intensity of the vortex generated by the vortex generator, and the increase in ship resistance, the present invention proposes a vortex generator for propeller ships. include:

Method used

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  • Vortex generator for propeller type ship and ship
  • Vortex generator for propeller type ship and ship

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Embodiment Construction

[0033] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0034] Please refer to Figure 1-Figure 2 , the invention discloses a vortex generator for a propeller ship, comprising:

[0035] The bottom surface 1 is used for connecting with the ship;

[0036] The first vortex generating area is connected to the bottom surface 1 and is used to create a first vortex; the first vortex generating area includes a first flow-facing surface 2, and the first flow-facing surface 2 is perpendicular to the bottom surface 1 ;

[0037] The second vortex generating area is connected to the end of the first vortex generating area away from the bottom surface 1, and is used to create a second vortex;

[0038] A vortex mixing zone, one end of the vortex mixing zone is connected to the second vorte...

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Abstract

The invention discloses a vortex generator for a propeller type ship and the ship, a first incident flow face is additionally arranged, the first incident flow face is perpendicular to the bottom face, additional vortexes can be generated, the additional vortexes and main vortexes are overlapped, and mixed vortexes with the increased wake and the enhanced energy are obtained. When the mixed vortex is transmitted to a stern flow lagging area, flow separation can be restrained, generation of an excessive low-pressure area can be restrained, the variation gradient of wake flow at propeller blades is reduced, cavitation bubbles at the position are enabled to develop stably, pulsating pressure generated by the cavitation bubbles is reduced, and therefore the damping effect is achieved, and the sailing resistance is reduced.

Description

technical field [0001] The invention relates to the technical field of marine transportation, in particular to a vortex generator for a propeller ship and the ship. Background technique [0002] The phenomenon of large-scale separation flow widely exists in aviation, spaceflight, navigation, wind engineering and other fields. Large separation flows usually show strong unsteady vortex shedding, accompanied by increased resistance, decreased lift, noise, and even fatigue damage caused by vibration of the structure. [0003] In recent years, vortex generators have been widely used in aerospace, aviation, ship engineering and other fields as a new type of flow separation control method. After the boundary layer flow is mixed, the energy is transferred to the boundary layer, so that the boundary layer flow field in the reverse pressure gradient can continue to attach to the surface of the object without separation after obtaining additional energy, thereby reducing the flow resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B1/32
CPCB63B1/32Y02T70/10
Inventor 高亚儒薛大文刘志庞聪利潘昀沈良朵
Owner ZHEJIANG OCEAN UNIV
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