Three-dimensional numerical simulation method for droplet atomization in transonic flow process of compressible fluid

A technology of flow process and three-dimensional numerical value, applied in 3D modeling, image data processing, electrical digital data processing, etc., can solve problems such as the inability to study the distribution of droplets, the inability to break droplets and atomize, and particle tracking

Active Publication Date: 2019-11-05
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

None of these three methods can provide us with the droplet breaking atomization and particle tracking in the three-dimensional transonic flow field, and w...

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  • Three-dimensional numerical simulation method for droplet atomization in transonic flow process of compressible fluid
  • Three-dimensional numerical simulation method for droplet atomization in transonic flow process of compressible fluid
  • Three-dimensional numerical simulation method for droplet atomization in transonic flow process of compressible fluid

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Embodiment Construction

[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] The method of this example is as follows.

[0045] Step 1: Use numerical simulation software to generate the parametric equation of the side wall curve of the Laval structure, and use the obtained parametric equation to establish a geometric solid model of the Laval structure in the two-dimensional axisymmetric space module;

[0046] In this embodiment, use matlab software to generate the parametric equation of the Laval structure side wall curve as shown in Table 1, and the parametric equation curve is as shown in Table 1. figure 1 As shown; use comsol software to establish a geometric solid model of the Laval structure in the two-dimensional axisymmetric space mo...

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Abstract

The invention provides a three-dimensional numerical simulation method for droplet atomization in a transonic flow process of compressible fluid, and relates to the field of fine atomization. According to the invention, simulation of a process from generation of a transonic flow field to breaking of liquid particles in the transonic flow field in a three-dimensional model space is realized by using a numerical simulation method; the established numerical model and calculation steps can be used for visualizing and analyzing three-dimensional states of a liquid crushing process, a crushing mechanism, particle position distribution, particle size distribution, particle speed distribution and the like in transonic flow fields in spray pipes with different shapes and based on a Laval mechanism.The established numerical model provides accurate prediction and most intuitive theoretical basis for crushing processes and results of different liquid particles in flowing under different airflow inlet and outlet boundary conditions under initial conditions.

Description

technical field [0001] The invention relates to the field of fine atomization, in particular to a three-dimensional numerical simulation method of droplet atomization in the process of compressible fluid transonic flow. Background technique [0002] The Laval nozzle is an air control structure that can accelerate air from subsonic to supersonic by applying high-pressure air flow at the inlet boundary, combined with the contraction and expansion structure of the Laval nozzle itself. Transonic atomization is a method of accelerating the air to break the liquid column through the Laval nozzle. In the transonic flow field, the liquid column is broken into micron-sized droplet particles by the ultra-high speed gas. This process produces a large number of fine mist Droplets can be applied in the field of dust removal, and achieve efficient capture of respirable dust. The formed gas-liquid two-phase fog curtain can effectively isolate the dust source from workers. The effect of in...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00Y02T90/00
Inventor 张天荆德吉葛少成孟祥曦任帅帅马明星安日娜庞星宇贾荞溪
Owner LIAONING TECHNICAL UNIVERSITY
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