Thesis
Applications of surface tension driven flow in drop absorption and puddle jumping
Washington State University
Master of Science (MS), Washington State University
2018
Handle:
https://hdl.handle.net/2376/100343
Abstract
Capillary phenomena are widely studied topics within sub-domains like wetting, wicking, droplet impact, droplet study etc. In this study we investigate the applications, (i) drop absorption in porous substrate and (ii) puddle jumping in zero gravity, where the surface tension forces drive the event. For the first application, understanding the fundamentals in drop absorption in porous substrate made of nylon powder PA2200 is essential for use in the additive manufacturing. We experimentally studied the wetting and absorption behavior of aqueous solutions of isopropyl alcohol with porous substrate through the parameters like surface tension and porous substrate porosity. The surface tension of the aqueous solutions of isopropyl alcohol varied from 30 mN/m to 49 mN/m and porous substrates of porosity 0.28, 0.34, 0.38 and 0.41 were used. This study is further categorized into two based on the size of the drop employed viz. millimeter size and micrometer size. We find considerable differences in the wetting behavior between the millimeter size and micrometer size drops for the same substrate for e.g. the critical surface tension parameter from millimeter size drops do not apply for micrometer size drop absorption.
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Details
- Title
- Applications of surface tension driven flow in drop absorption and puddle jumping
- Creators
- Amit Goraksh Avhad
- Contributors
- Hua Tan (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525146101842
- Language
- English
- Resource Type
- Thesis