流化床焚烧炉喷嘴雾化效果的数值模拟  

Numerical simulation of nozzle atomization in fluidized bed incinerator

作　　者：夏善伟[1] 汪向阳[1] 陈金思[1] 胡献国[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2013年第8期902-905,共4页Journal of Hefei University of Technology：Natural Science

基　　金：合肥工业大学科学研究发展基金资助项目(2011QTXM1423)

摘　　要：文章利用Fluent软件对喷嘴的雾化效果进行了数值模拟，讨论了喷嘴结构及气流速度等对液滴雾化效果的影响。结果表明：控制风速在60-70m／s，喷嘴的长径比为2．2时，其雾化效果最好，而且在喷嘴沿着轴线方向以下60mm处为最佳雾化位置，此处以下可以设置为点火位置。喷嘴仿真分析和结构优化为改善喷嘴雾化效果提供了有效的方法。The atomization effect of the nozzle was numerically simulated by using Fluent software, and the influence of the structure of nozzle and the airflow velocity on the droplet atomization effect was discussed. The results showed that the best atomization effect could be gained when the wind speed was 60-70 m/s and the ratio between length and diameter was 2.2. The best atomization position was 60 mm below along the axial direction of the nozzle at which it might be chosen for the ignition. Through the analysis of numerical simulation results and the structure optimization of the nozzle, val- uable reference is provided for the design of air-assistant atomizin nozzle.

关 键 词：雾化喷嘴 液滴粒径 数值模拟 

分 类 号：X783[环境科学与工程—环境工程]