内混式扇形空气雾化喷嘴参数研究

化工进展

内混式扇形空气雾化喷嘴参数研究

蒋斌1，3，王子云2，付祥钊3，王勇3

1西南科技大学土木工程与建筑学院，四川绵阳 621010；2四川大学建筑与环境学院，四川成都 610065；3重庆大学三峡库区生态环境教育部重点实验室重庆 400045

出版日期:2011-02-05 发布日期:2011-02-05

Numerical study on fan-shaped air-blast atomizer parameters

JIANG Bin1，3，WANG Ziyun2，FU Xiangzhao3，WANG Yong3

1School of Civil Engineering and Architecture，Southwest University of Science and Technology，Mianyang 621010，Sichuan，China；2School of Architecture and Environment，Sichuan University，Chengdu 610065，Sichuan，China；3MOE Key Lab of Three Gorges Reservoir Region’s Eco-Environment，Chongqing University，Chongqing 400045，China

Online:2011-02-05 Published:2011-02-05

摘要/Abstract

摘要：

采用Eulerian-Lagrangian耦合模型，对内混式空气雾化喷嘴性能进行了数值模拟，模拟结果表明：索特尔平均直径随气液质量流量比的增加，先逐渐减小，达到极小值后，又逐渐增大，SMD的极小值约为39.5 μm；当气液质量流量比为23%时，距离喷嘴出口20 mm处液滴基本被气流束缚在扇形平面方向上±20 mm的范围内，液滴浓度和速度分布呈“双峰型”分布，最大值出现在“扇形”喷雾区域的边缘处（Y=15 mm和Y=－15 mm）；绝大部分液滴粒径在15～50 μm，峰值约为25 μm，索特尔平均直径为45.2 μm。

Abstract:

Based on Eulerian-Lagrangian coupling model，the performance of fan-shaped air-blast atomizer was simulated. The results showed that along with the increasing of gas-liquid mass flow ratio，Sauter Mean Diameter （SMD）decreased firstly，and after reaching the minimum value （39.5 μm），it began to increase. When the gas-liquid mass flow ratio was 23%，the droplets located at 20 mm from the atomizer were restricted to the field ranging from －20 mm to 20 mm in the fan-shaped direction，and the spatial droplet concentration distribution and velocity distribution were in bimodal distribution，with the maximal value occurring on the edge of the fan-shaped field（Y=15 mm，Y=－15 mm）. The droplet diameter mostly ranged from 15 μm to 50 μm，the peak value and SMD were 25 μm and 45.2 μm，respectively.

蒋斌1，3，王子云2，付祥钊3，王勇3. 内混式扇形空气雾化喷嘴参数研究 [J]. 化工进展.

JIANG Bin1，3，WANG Ziyun2，FU Xiangzhao3，WANG Yong3. Numerical study on fan-shaped air-blast atomizer parameters[J]. Chemical Industry and Engineering Progree.