CAJ | 학술논문

液滴与球形表面的碰撞为喷雾包衣等工程应用的基础.以单液滴与球形光滑表面为研究对象,采用高速相机,分析了在液滴不同撞击速度(0.88~4.43,m/s)和不同直径的球面(5~15,mm)实验条件下涂覆率的变化.研究了液滴与球面发生碰撞时发生的铺展震荡、涂覆球面、破碎飞溅现象.最后,建立了 K 值、球面直径与碰撞现象之间的关系图,为理论分析和数值模拟提供依据.
액적여구형표면적팽당위분무포의등공정응용적기출.이단액적여구형광활표면위연구대상,채용고속상궤,분석료재액적불동당격속도(0.88~4.43,m/s)화불동직경적구면(5~15,mm)실험조건하도복솔적변화.연구료액적여구면발생팽당시발생적포전진탕、도복구면、파쇄비천현상.최후,건립료 K 치、구면직경여팽당현상지간적관계도,위이론분석화수치모의제공의거.
Droplet-spherical surface collision is a fundamental issue in the application of spray coating. Under the experi-mental conditions of different impact velocity(0.88-4.43,m/s)and different outer diameters of the spherical surface(5-15,mm),the impact of a single droplet on a spherical surface at room temperature was investigated by analyzing the changes of coating with the help of a high-speed camera. When contacting the spherical surface,the droplet spreads,retracts,relaxes or splashes on the surface. Consequently,the relationship between the K value,sphere diameter and impacting phenomena was established for theoretic analysis and numerical simulation.