摘要
本文通过设计液滴分布实验装置研究气泡在自由液面处破裂产生膜液滴情况。利用熟宣纸特性以及染色液滴进行气泡破裂产生膜液滴的空间分布测量。通过扫描以及图像处理分析得到单个气泡破裂产生膜液滴空间分布情况,包括膜液滴的数目、尺寸、空间位置等。实验结果表明:气泡破裂产生膜液滴数目以及空间分布位置受破裂点产生位置影响,破裂点靠近气泡顶部,分布呈现为扁平;破裂点靠近气泡底部,分布呈现为扇面。统计15个半径为11mm气泡的实验数据,产生膜液滴平均尺寸为珚d=152.4μm,液滴谱分布图中,中小尺寸曲线同n=5的Γ曲线符合良好。
This work describes a new experimental method to observe the spacial distribution of film drops produced by bursting bubbles at a free water surface. Rice paper and dyed liquid drops were used to indicate the positions of the film drops. The film drop information produced by single bubble bursting, including the number, the size and the positions of the drops, were obtained through an image processing program. The experimental results showed that the position o{ the break point on the bubble cap mainly determined the number and the spacial distribution of the film drops. The distribution pattern was flat when the break point was close to the center of the cap while the distribution pattern was sector shaped when the break point was close to the bottom of the cap. Burst data was measured for 15 bubbles with an average radius of 11 mm with the average size of all the film drops being d = 1 524 μm. For small and medium size drops, the spectral distribution of the drops fits very well with a Gamma function with n equal to 5.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第9期1310-1314,共5页
Journal of Tsinghua University(Science and Technology)
基金
清华大学博士研究生创新基金资助项目
关键词
气泡破裂
膜液滴
空间分布
bursting bubbles
film drops
spacial distribution
