Dynamic contact lines in rotating liquids

Author

Farhad Adib

Abstract

"When a liquid surface makes contact with a solid surface, as in a liquid drop on a solid, the value of the contact angle can be obtained from equilibrium interfacial thermodynamics. Under dynamic situations the contact angles differ greatly from the equilibrium values. Since under dynamic conditions the liquid will have to satisfy the equations of motion and continuity, the equations of fluid mechanics have been solved for the case of an infinite cylinder partly immersed in a liquid and rotating with a constant angular velocity. The profiles obtained show that there are two regions; a macroscopic, smooth and stable region, and a small regional near the contact line which shows large curvatures and is unstable to small disturbances. Consequently, it is suggested that the apparent dynamic contact angles observed are the results of visual extrapolation of the smooth, stable macroscopic shapes to the solid surface. It is also shown that the effect of the fluid mechanical conditions, bulk and surface rheologies, on the apparent dynamic contact angles vary from one case to another"--Abstract, page ii.

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Summer 1985

Pagination

viii, 56 pages

Rights

© 1985 Farhad Adib, All rights reserved.

Document Type

Thesis - Citation

File Type

text

Language

English

Subject Headings

Fluid dynamicsSurface tensionSolid-liquid interfacesRotating masses of fluid

Thesis Number

T 5222

Print OCLC #

13141138

Recommended Citation

Adib, Farhad, "Dynamic contact lines in rotating liquids" (1985). Masters Theses. 350.
https://scholarsmine.mst.edu/masters_theses/350