| Summary: | 碩士 === 國立交通大學 === 機械工程系所 === 105 === There are two-part in my study. First, the stretched length of a droplet decrease when we increase the frequency of the extend field. Because there is a lag theta between the extend field and the direction of the drop. This lag theta can divide into parallel and vertical part of the drop. When we increase the frequency, the lag theta also increase. The vertical part becomes smaller so it leads to the stretched length shorter.
In the second case of two droplets, different initial diameters and initial drops distances showed that there are three different situation: self-spin, dual rotation, rigid rotation. Self-spin is the longest initial drops distance. Rigid rotation is bigger radial velocity than dual rotation.
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