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A Method for Mixing Spray Jet and Mainstream Gas

A spray-type, mainstream technology, applied in the direction of fluid mixers, chemical instruments and methods, mixers, etc., can solve the problems of lack of organizational technology and achieve the effect of promoting development and reducing high energy consumption

Active Publication Date: 2020-08-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of reasonable and efficient organizational technology for the mixing process of the spray jet and the mainstream gas in the confined space of the engine

Method used

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  • A Method for Mixing Spray Jet and Mainstream Gas
  • A Method for Mixing Spray Jet and Mainstream Gas
  • A Method for Mixing Spray Jet and Mainstream Gas

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Embodiment 1

[0049] see figure 1 , figure 1 A structural schematic diagram of a mixing chamber for mixing a spray jet and a mainstream gas provided by the present invention; the mixing chamber of a liquid jet and a mainstream gas is a rectangular pipe structure, and its cross-sectional size is D×D=180mm×180mm, The mainstream gas is air at normal temperature and pressure, and the Reynolds number Re of the airflow g 2.4×10 4 ; The working medium of the jet fluid is water at normal temperature, and the volume flow rate is 6.18×10 -6 m 3 / s.

[0050] According to the organization method of a kind of spray jet mixed with mainstream gas of the present invention, the characteristic cross-section of the mixed flow field is selected as 1.33D, and the vortex center depth and vortex center distance of the symmetrical anti-vortex pair on the cross-section are selected as 0.3~0.4D, After calculation, the initial spray droplet size is selected as about 80 μm, and the initial droplet velocity is abo...

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Abstract

The invention discloses a method for organizing the mixing of spray jet and mainstream gas. By analyzing the mixing mechanism and law of spray jet and mainstream gas, combined with particle dynamics, vortex dynamics and other theories, a blending method based on regulation and control is proposed. The large-scale vortex structure-symmetric anti-vortex pair that dominates the diffusion characteristics of spray droplets in the flow field is used to realize a new idea of ​​rationally organizing the mixing process of the spray jet and the mainstream gas, and according to the characteristics of the symmetrical anti-vortex pair in the mixing flow field The internal relationship between the size and the parameters of the flow field, the determination method of the spray jet atomization characteristic parameters and the nozzle selection method based on the mainstream gas state are given, which solves the problem of mixing the spray jet with the mainstream gas in the current industrial process. The problem of lack of organizational skills in the mixed process.

Description

technical field [0001] The invention belongs to the technical field of engine fluid, in particular to a method for organizing the mixing of spray jet and mainstream gas. Background technique [0002] The mixing of spray jet and air flow has important applications in many types of aero-engines, such as the fuel spray premixed combustion process in the combustion chamber, the jet pre-cooling process of the turbine engine intake port, and the jet cooling and mass-enhancing process of the tail nozzle of high-energy fuel engines. And the tail flame spraying water cooling process of the high-thrust rocket, etc. The rational organization of the liquid spray jet and the mainstream gas is the prerequisite for the efficient mixing of the two, which is of great significance to the optimization and configuration design of the above-mentioned engine-related processes. For a long time, related research at home and abroad has focused on the crushing and atomization process of jet liquid i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F5/02
CPCB01F25/20
Inventor 张海滨白博峰王璞
Owner XI AN JIAOTONG UNIV
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