Ship body drag reduction structure based on shark gill bionic jet flow
A hull and shark technology, applied in the direction of hull, hull design, hydrodynamic characteristics/hydrostatic characteristics, etc., can solve the problems of environmental protection and environmental friendliness, and achieve the goal of inhibiting separation, improving energy efficiency and reducing frictional resistance Effect
Pending Publication Date: 2021-01-22
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology
[0003] At present, there are many methods for hull drag reduction technologies, such as: adding drag reducers or additives to the fluid, but these technologies require additional consumption of materials, which are not environmentally friendly and environmentally friendly; in addition, vibration drag reduction or micro Water bubbles, water film, and water layer drag reduction, using the friction between empty water and water to replace the friction between the hull and water, these technologies require additional devices
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings and specific embodiments of the present invention. Obviously, the described embodiments are only some 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 making creative efforts belong to the protection scope of the present invention.
[0026] It should be pointed out that the orientation words "upper" and "lower", "inner" and "outer" mentioned herein are defined based on the relative positions of the components in the drawings of the present invention, and are only used to describe the technical solutions. Clear and convenient, it should be understood that the application of this location word does not constitute a limit to the protection scope of this application.
[0027] In the d...
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The invention discloses a ship body drag reduction structure based on shark gill bionic jet flow, and relates to the technical field of ship drag reduction. The ship body drag reduction structure comprises a ship body and a plurality of drainage stand columns, a concave cavity is formed in the lower side of the outer surface of the ship body towards the interior, and the drainage stand columns arevertically arranged in the concave cavity side by side; a water flow inlet channel is arranged between the plurality of drainage stand columns and the inner bottom wall of the concave cavity, one port of the concave cavity is the inlet end of the water flow inlet channel, and a water flow drainage channel is formed between every two adjacent drainage stand columns; when flowing through the outersurface of the ship body, water flow flows into the water flow inlet channel from the inlet end and flows out of the water flow drainage channels, and jet flow is formed when the water flow flows outof the water flow drainage channels. The ship body drag reduction structure based on shark gill bionic jet flow can effectively control the speed gradient of the outer wall face of the ship body, restrain boundary layer separation, reduce the friction resistance of the ship body and improve the energy efficiency of a ship, water flow playing a drag reduction role is consistent with main flow, dragreducers and additive substances do not need to be added, and the ship body drag reduction structure is environmentally friendly and free of pollution.
Description
technical field [0001] The invention relates to the technical field of ship drag reduction, in particular to a hull drag reduction structure based on shark gill bionic jet flow. Background technique [0002] In the process of ship design, the determination of the best shape of the hull is a very critical design technology, which directly affects important performances such as resistance and propulsion, maneuverability and seakeeping of the ship, and the shape of the hull with the least resistance is the first pursuit of ship shape design. The goal. Since there are many factors that will affect the resistance of the ship, in terms of reducing the resistance of the ship, it is possible to reduce the resistance of the ship by optimizing the shape of the ship to achieve energy saving. Therefore, the application of drag reduction technology has high economic value for both military and civilian ships. [0003] At present, there are many methods for hull drag reduction technolog...
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IPC IPC(8): B63B1/36
CPCB63B1/36Y02T70/10
Inventor 杨凌钟兢军吴宛洋
Owner SHANGHAI MARITIME UNIVERSITY