Thesis
Drop capture by a helically-supported capillary channel and the resulting capillary waves
Washington State University
Master of Science (MS), Washington State University
2012
Handle:
https://hdl.handle.net/2376/100981
Abstract
A liquid cylinder can be supported by a helical wire of a small coil radius due to the surface tension effects in normal gravity. This is effectively a capillary channel. A recently developed theoretical model of a liquid cylinder supported by an array of rings of infinitesimally thin wires predicts lower wave packet velocities at higher pitches l. The experimental results show the same trend qualitatively. The experimental measurements of wave packet velocities give higher values than the theoretical model based on infinitesimal wires. The finite wire size in the experimental system would be expected to lead to a stiffer system and thus higher wave speeds . The pressure in the water-filled channel can be maintained at slightly lower than atmospheric pressure because of the Laplace pressure effect. This facilitates drop capture when a droplet moving at a low velocity comes in contact with the channel. The experimental results show nearly complete drop absorption over a range of impact parameter.
Metrics
2 File views/ downloads
7 Record Views
Details
- Title
- Drop capture by a helically-supported capillary channel and the resulting capillary waves
- Creators
- Fahim Chandurwala
- Contributors
- David B. Thiessen (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Physics and Astronomy, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525376501842
- Language
- English
- Resource Type
- Thesis