Dynamics of miscible liquid interfaces
Abstract/Contents
- Abstract
- This thesis is comprised of three parts, focusing on the dynamics of miscible liquid interfaces, the dynamics of ultra-low surface tension liquid interfaces, and the spreading of "rinsing" liquids across rotating, horizontal substrates. Miscible liquids commonly contact one another in natural and technological situations, often as one liquid suspended within another or in the proximity of a solid substrate. A systematic experimental study of the shape evolution of pendant and sessile droplets immersed in miscible environments was conducted. We present experimental findings that have distinctly different shape evolution and time-dependent dynamics from droplets present in immiscible environments, which have been reported previously. A complementary numerical approach to compute the concentration and velocity fields of these systems using a simplified set of governing equations is paired with our experimental findings. Additionally, a study of droplets freely rising through a miscible, more viscous liquid was conducted. We report observations of droplets of water rising through glycerol and corn syrup. A class of ultra-low surface tension liquids are aqueous two-phase solutions, which form by the phase separation of different polymers within an aqueous solution when a critical threshold in concentration of polymer is exceeded. We investigate two configurations of water-water emulsions: a sessile drop, and a drop at a planar liquid-liquid interface of an aqueous two-phase solution. A particular class of liquids that spread across solid surfaces are "rinsing" liquids. When applied to a rotating substrate, the dynamics of rinsing liquids are interesting fundamentally in the interaction of several classic modes of spreading and industrially in a variety of cleaning applications, such as in the manufacturing of silicon wafers. An investigation of the spreading of a rinsing liquid across a horizontal, rotating hydrophilic substrate was conducted. We present experimental findings of the spreading radius of the rinsing liquid, in which we observed four distinct growth rates across the parameter space and use lubrication theory to explain the phenomena.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2018; ©2018 |
| Publication date | 2018; 2018 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Walls, Daniel Joseph |
|---|---|
| Degree supervisor | Fuller, Gerald G |
| Thesis advisor | Fuller, Gerald G |
| Thesis advisor | Shaqfeh, Eric S. G. (Eric Stefan Garrido) |
| Thesis advisor | Spakowitz, Andrew James |
| Degree committee member | Shaqfeh, Eric S. G. (Eric Stefan Garrido) |
| Degree committee member | Spakowitz, Andrew James |
| Associated with | Stanford University, Department of Chemical Engineering. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Daniel Joseph Walls. |
|---|---|
| Note | Submitted to the Department of Chemical Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2018. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2018 by Daniel Joseph Walls
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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