矩形声化学反应器内远场声指向性研究  

Study on the directivity in far field of the rectangular sonochemical reactor

作　　者：马奭文 张明铎[1] 李娟[1] 王鲜艳[1] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2012年第4期39-42,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10574085);陕西省教育厅科研计划基金项目(05JK165)

摘　　要：基于镜像原理,研究了声化学反应器内远场的声指向性.结果表明:声源频率愈高,主声束愈窄,同时旁瓣则受抑制;相邻换能器间距愈大,主声束愈窄,旁瓣峰值愈高.虚源级数与主声束无关,但虚源级数愈高,指向性愈尖锐,且旁瓣受抑制.这表明声化学反应器纵向与横向尺寸的比值越大,虚源级数越高,更能准确描述远场的指向性.Based on the principle of mirror image, the directivity in far field of sonochemical reactors is studied. The theoretical analysis and simulation shows that the higher transducer frequency, the narrower main acoustic beam and the smaller side lobe. The longer distance between adjacent transducer, the narrower main acoustic beam and the higher side-lobe peak. Besides,there is no relevance between the virtual source series and main acoustic beam. But the higher the virtual source series, the sharper directivity and the smaller side lobe. This suggests

关 键 词：组合声源 镜像原理 主声束 指向性 仿真 

分 类 号：O426.1[理学—声学]