The numerical simulation of internal mixing nozzle flow field

被引：0

作者：

Zhang, Lin ^{[1
]}

Wang, Li-Kun ^{[1
]}

Xue, Lei ^{[1
]}

Wang, Hui-Qiang ^{[1
]}

机构：

[1] School of Mechanical Engineering, Changzhou University

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2012年 / 26卷 / 06期

关键词：

Flow characteristics; Internal mixing nozzle; Numerical simulation; Saving energy; Spray particle size;

D O I：

10.3969/j.issn.1003-9015.2012.06.009

中图分类号：

学科分类号：

摘要：

A new kind structure of internal mixing nozzle was put forward in order to improve the combustion efficiency of fuel boilers and furnaces. The working principle of the new kind structure of internal mixing nozzle was introduced. Meanwhile, CFD software was used to build the physical model and simulate the flow field of the internal mixing nozzle. The influences of mixing-room length of the internal mixing nozzle and gas to liquid ratio on spray particle size were discussed. The distribution law of spray particle size at different face positions behind the fuel nozzle was studied. The numerical simulation results of the average spray particle size for the new structure of internal mixing nozzle were compared with the calculation results of experience formula for the conventional mixing nozzle. The results show that the best length of the mixing-room of internal mixing nozzle is 70~80 mm and the spray particle size reduces with increasing of gas to liquid ratio. It was found that the secondary spraying of liquid fuel happens within the area of 100 mm apart from the nozzle. The spray particle size of the new structure internal mixing nozzle is smaller than that of traditional internal mixing nozzle.

引用

页码：959 / 963

页数：4

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