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Method for establishing liquid shaking model in rectangular liquid tank with porous elastic baffle

An elastic baffle, liquid sloshing technology, applied in the direction of instrument, design optimization/simulation, calculation, etc., can solve the problems of instability of hazardous chemical tanker, damage to the inner wall structure of the tank, traffic safety accidents, etc., and achieve good sloshing effect. , poor bending performance, the effect of simplifying the calculation process

Active Publication Date: 2021-08-13
HUAIYIN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

Previous studies have shown that the impact load caused by sloshing will not only cause damage to the inner wall and structure of the tank, but in severe cases will also cause the instability of the hazardous chemical tanker and cause traffic safety accidents. Analytical research is necessary

Method used

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  • Method for establishing liquid shaking model in rectangular liquid tank with porous elastic baffle
  • Method for establishing liquid shaking model in rectangular liquid tank with porous elastic baffle
  • Method for establishing liquid shaking model in rectangular liquid tank with porous elastic baffle

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0054] The invention discloses a method for establishing a liquid sloshing model in a rectangular liquid tank with a porous elastic baffle, comprising the following steps:

[0055] Step 1: A porous elastic baffle is vertically installed at the center of the rectangular liquid tank, and a pair of mooring lines with a spring stiffness of K are connected to the top of the porous elastic baffle, and the other ends of the mooring lines are respectively fixed on the two sides of the rectangular liquid tank. On the wall of the side tank, the mooring line and the y-axis are distributed at an angle of θ. Establish a two-dimensional coordinate system for a rectangular liquid tank, take the intersection o...

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Abstract

The invention relates to the technical field of kinematics and dynamics modeling, and discloses a method for establishing a liquid shaking model in a rectangular liquid tank with a porous elastic baffle. The porous elastic baffle is vertically arranged in the center of the rectangular liquid tank, and the top end of the porous elastic baffle is connected with a pair of mooring lines with the spring rigidity being K; the velocity potential of fluid in a tank is calculated by using a Laplace equation and a linearized free liquid level boundary equation based on a fluid dynamic analysis method of a two-dimensional linear potential theory; according to a Green formula matching characteristic function expansion method and a Darcy theorem, the bending moment and the shearing stress of liquid shaking on the baffle and the liquid height and the dynamic pressure in the liquid tank are solved, so that a specific analytical solution of important parameters of liquid shaking in the tank is obtained. The mathematical model established by the invention can effectively solve the problem of kinetic analysis of the rectangular liquid tank with the porous elastic baffle, and a relatively small weight load is applied to the tank body, so that the calculation process is simplified, and the accuracy of the model is improved.

Description

technical field [0001] The invention relates to the technical field of kinematics and dynamics modeling, in particular to a method for establishing a liquid sloshing model in a rectangular liquid tank with a porous elastic baffle. Background technique [0002] When the container storage tank is externally excited, the liquid in the tank is prone to severe free liquid surface oscillations. This phenomenon is called sloshing, and it is an important engineering problem worthy of research. Previous studies have shown that the impact load caused by sloshing will not only cause damage to the inner wall and structure of the tank, but in severe cases will also cause the instability of the hazardous chemical tanker and cause traffic safety accidents. Analytical research is necessary. [0003] Previously in anti-sloshing installations, vertical and horizontal rigid baffles were considered to be effective tools for suppressing liquid sloshing, but they also exert considerable gravitat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F2113/08G06F2119/14Y02T90/00
Inventor 赵志国徐连高孙中张磊毛康康魏晓倩王瑞刘台凤
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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