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Device, system and method for suppressing vortex-induced vibration of bluff body

A vortex-induced vibration and suppression device technology is applied in the field of vortex-induced vibration suppression devices for bluff bodies, which can solve problems such as fatigue damage of bluff body structures, and achieve the effects of avoiding fatigue damage, changing force characteristics, and suppressing vortex-induced vibrations.

Active Publication Date: 2021-08-27
BEIHANG UNIV
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Problems solved by technology

[0005] The embodiments of the present invention provide a device, system and method for suppressing vortex-induced vibration of a blunt body, so as to solve the technical problem that the vortex-induced vibration of the blunt body occurs after the fluid flows through the blunt body, and the vortex-induced vibration causes fatigue damage to the structure of the blunt body

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  • Device, system and method for suppressing vortex-induced vibration of bluff body
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  • Device, system and method for suppressing vortex-induced vibration of bluff body

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0045] In describing the present invention, it is to be understood that the terms "centre", "length", "width", "thickness", "top", "bottom", "upper", "lower", " "Left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", etc. indicate the orientation or positional relationship based on the drawings Th...

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Abstract

The embodiment of the invention provides a device, system and method for suppressing vortex-induced vibration of a bluff body. The device comprises at least one suppression component, wherein the suppression component is of a sheet-shaped flexible structure, and the suppression component is fixed to a preset outer surface area of the bluff body; a connecting part between the suppression component and the bluff body is distributed in the axial direction of the bluff body, so that the surface, where the sheet-shaped suppression component is located, of the suppression component is unfolded in the flowing direction of fluid when the fluid flows through the bluff body; and the suppression component and the fluid in the wake of the bluff body generate a fluid-solid coupling effect, so that the suppression component deforms, and the stress characteristic of the bluff body is changed. According to the device, system and method, the stress characteristic of the bluff body can be changed when the fluid flows through the bluff body, vortex-induced vibration of the bluff body in the fluid is suppressed, and fatigue damage of the bluff body structure caused by the vortex-induced vibration is avoided.

Description

technical field [0001] The invention relates to the technical field of flow control, in particular to a device, system and method for suppressing vortex-induced vibration of a blunt body. Background technique [0002] In daily life and various engineering fields, fluids often flow through blunt bodies, such as atmospheric or ocean currents flowing through buildings, bridges, power lines, and submarine cables. [0003] After the fluid flows through the blunt body, flow separation occurs, and the generated shear layer will be induced to generate alternately shedding wake vortices, which will generate periodically changing aerodynamic force, causing the blunt body to undergo vortex-induced vibration. [0004] However, the vortex-induced vibration of the blunt body will cause fatigue damage to the blunt body structure. Contents of the invention [0005] The embodiments of the present invention provide a device, system and method for suppressing vortex-induced vibration of a b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15D1/00G01H9/00
CPCF15D1/006F15D1/0065F15D1/007G01H9/00
Inventor 冯立好崔国鹏王晋军
Owner BEIHANG UNIV
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