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A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow

A technology of fluid-solid coupling and elastic support, which is applied in the fields of instruments, calculations, and electrical digital data processing, etc., can solve the problems of insufficient induced vibration, etc., and achieve the effects of low cost, high efficiency, and improved performance of hardware equipment

Active Publication Date: 2019-02-22
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

At present, it is not enough to study the fluid-induced vibration of a cylinder under the action of wake flow using the fluid-solid coupling method in computational fluid dynamics software.

Method used

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  • A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow
  • A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow
  • A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow

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Embodiment Construction

[0051] A Fluid-Structure Interaction Analysis Method for Elastically Supported Cylinder Galloping under Wake Flow

[0052] 1.1. Establish a galloping model of a single cylinder under the action of fluid

[0053] Such as figure 1 As shown, the vibration model of the cylinder under the action of fluid can be approximated as a spring vibrator system. Because the influence of torsion is relatively small in the simulation in this paper, only the influence of torsional degree of freedom is not considered, and only the translational degrees of freedom in the X and Y directions are considered. If the mass of the unit length (1m) cylinder in the spring vibrator system, the stiffness of the spring and the damping of the damper are represented by M, K and C respectively; the two-degree-of-freedom vibration model can be expressed by the following equation:

[0054]

[0055] In the formula, for the two-dimensional problem, M is the mass of the section with the span length of the syste...

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Abstract

A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow includes such steps as establishing galloping model of single cylinder under fluid action, calculatinggalloping fluid-structure coupling of galloping fluid-structure coupling of elastic supporting cylinder under wake flow, and calculating galloping fluid-structure coupling of galloping fluid-structurecoupling of galloping fluid-structure coupling of galloping fluid. S2, defining the parameters needed for numerical simulation of computational fluid dynamics software; S3, fluid-structure coupling calculation based on CFD; S4, Computational Fluid Dynamics software is used to simulate and analyze the vibration model of two cylinders under the action of fluid.

Description

technical field [0001] The invention relates to the technical field of flow around a cylinder, in particular to a galloping fluid-solid coupling analysis method for an elastically supported cylinder under wake flow. Background technique [0002] Since the problem of flow around multiple cylinders is not only complex but also widespread, a lot of researches have been done on it. But it is basically based on the flow around a single cylinder or the flow around both front and rear cylinders is fixed. At present, it is still not enough to study the fluid-induced vibration of a cylinder under the action of wake by using the fluid-solid coupling method in computational fluid dynamics software. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a galloping fluid-solid coupling analysis method for elastically supported cylinders under wake flow. [0004] The purpose of the present invention is achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 晏致涛游溢张江滔王灵芝何成刘欣鹏廉超超李伟赵建平王欣欣董新胜庄文兵张龙马瑞龙
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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