摘要
建立了旋流喷嘴雾化的数值计算模型,将计算结果与静止大气环境下液滴粒径的试验数据进行了对比,证明该数值计算模型的准确性.利用数值计算方法,研究了旋流喷嘴在不同安装角下,喷雾进入横向气流场后液滴Sauter直径(SMD)的变化规律,给出了喷嘴出口下游矩形管道中不同截面上雾化液滴粒径的分布情况.结果表明:对于压力旋流喷嘴,安装角与液滴统计粒径呈多值关系;随着喷嘴安装角的增大,液滴粒径的分布变宽.
Numerical models for atomization simulation of swirl nozzles were built, based on which the calculation results of droplet size were compared with that of the experiment performed under atmospheric static conditions, and thus the accuracy of the numerical models was proved. Using numerical calculation algorithm, the variation law of droplet Sauter mean diameter（SMD） in the cross flow field at different setting angles of swirl nozzle was studied, and hence the droplet size distribution obtained at different sections of rectangular pipe in the nozzle downstream. Results show that for pressure swirl nozzles, the setting angle has a multivalued relation with statistical droplet size; with the rise of setting angles, the droplet size distribution is widened.
出处
《动力工程学报》
CAS
CSCD
北大核心
2010年第9期668-672,共5页
Journal of Chinese Society of Power Engineering
