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Method for numerical simulation of a drop flow tongue

A numerical simulation and flow technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as research water tongue, time consumption, measurement result error, etc.

Pending Publication Date: 2019-07-26
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the published results of water tongue research, it is found that scientific researchers use traditional measurement methods to measure water tongue movement laws, and the establishment of physical models and measurement data is labor-intensive and time-consuming, and the measurement results have large errors
In recent years, some universities or scientific research institutes have gradually numerically simulated the movement of water tongues, but the results are not spatial angles, but two-dimensional deflected flow or mainly focus on the study of flow field and pressure, so there is currently no effective method to study the law of water tongue movement

Method used

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  • Method for numerical simulation of a drop flow tongue
  • Method for numerical simulation of a drop flow tongue
  • Method for numerical simulation of a drop flow tongue

Examples

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Embodiment 1

[0078] (1) In this embodiment, the overflow weir model is drawn and established in the GAMBIT software. The overflow weir model includes a tetragonal overflow weir area 12 and a quadrilateral water weir vertical to and connected to the upper part of the overflow weir area 12. Tongue area 13, the weir crest of the overflow weir area 12 is horizontal; the connecting part of the overflow weir area 12 and the water tongue area 13 is the interface 6;

[0079] The overflow weir area 12 includes the transfer surface 6 and the inlet 1 respectively located on the front and rear sides of the square area, the left side 2 of the overflow weir area and the right side 3 of the overflow weir area located on the left and right sides, and the The top surface 4 and weir crest of the overflow weir area on the upper and lower end faces; the water tongue area 13 includes the front side 8 of the water tongue area located on the front and rear sides of the quadrangular area, the interface 6 and the w...

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Abstract

The invention relates to a method for numerical simulation of a drop flow tongue. The method comprises the following steps: 1, establishing an overflow weir model, subdividing a structural grid and setting boundary conditions; 2, establishing a drop flow tongue iterative calculation model which comprises establishing a turbulence equation, a two-phase flow model, an initial condition and a relaxation factor; and 3, establishing a numerical simulation result processing model, wherein the numerical simulation result processing model comprises color strip parameter setting, water volume fractionsetting and two-phase display parameter setting. According to the invention, the motion state of the drop tongue can be simulated quickly and accurately, and reference is provided for basic mechanismdevelopment and practical engineering application of the drop tongue diffusion rule.

Description

technical field [0001] The invention belongs to the application field of simulation of a falling water tongue, and in particular relates to a method for numerically simulating a falling water tongue. Background technique [0002] Plunging flow is a rapid flow phenomenon in which the water flow transitions from slow flow to rapid flow, and the water surface drops sharply. When the water body flows from the top surface of the side wall to the outer edge, the water depth decreases until the water depth drops to the critical water depth when the water falls to the sill section. , the state of water flow becomes critical flow, and after passing through the falling ridge section, the component force of water gravity and air resistance are out of balance, causing the water flow to accelerate and the state of water flow to become torrent. The water body falling from the section of the sill is called the water tongue; the vertical distance between the water tongue landing point and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 边永欢郭延凯廉静岳琳罗晓
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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