甘油/压缩空气两相喷雾动力学研究  

Experimental study on characteristics of glycerol / compressed air two-fluid spray

作　　者：王锐[1] 景青[2] 周致富[1] 白飞龙 陈斌[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049 [2]西安近代化学研究所,西安710065

出　　处：《中国科学院大学学报（中英文）》2016年第2期223-227,共5页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(51336006);陕西省国际科技合作重点项目(2013KW30-05);中央高校基本科研业务费专项基金资助

摘　　要：甘油喷雾在生产和生活中有诸多应用.利用压缩空气辅助甘油喷雾可获得雾化性能良好的甘油液滴,提高甘油的利用率.本文采用双流体喷嘴在不同喷雾压力下进行甘油/压缩空气两相喷雾,使用高速摄像仪拍摄稳态喷雾形态,利用PDPA测量喷雾液滴的直径与速度的空间分布,对两相喷雾动力学进行系统的实验研究.结果表明,在实验压力条件下,甘油经压缩空气混合及二次雾化后,雾化状况良好.实验获得了液滴直径与速度的空间分布及其与喷雾压力的变化关系.Glycerol spray is widely encountered in daily life and industries. With the assistance of compressed air, the glycerol spray achieves good atomization performance which enhances the utilization efficiency of glycerol. We carried out an experimental study on the characteristics of glycerol/compressed air spray using a concentric two-fluid nozzle. The steady spray pattern was captured by the high-speed camera, and the droplet diameters and velocities were measured by phase Doppler particle analyzer. The experiment results showed that good atomization effects were achieved after the intensive mixing of glycerol droplets and compressed air and the secondary spray under the experiment condition. The spatial distributions of droplet diameters and velocities and their change relations with spray pressure were obtained in the experiments.

关 键 词：甘油 压缩空气 喷雾特性 液滴动力学 

分 类 号：O359[理学—流体力学]