CAJ | 학술논문

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.
기우경상원리,연구료성화학반응기내원장적성지향성.결과표명：성원빈솔유고,주성속유착,동시방판칙수억제;상린환능기간거유대,주성속유착,방판봉치유고.허원급수여주성속무관,단허원급수유고,지향성유첨예,차방판수억제.저표명성화학반응기종향여횡향척촌적비치월대,허원급수월고,경능준학묘술원장적지향성.
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