Graduation Semester and Year
2016
Language
English
Document Type
Thesis
Degree Name
Master of Science in Mechanical Engineering
Department
Mechanical and Aerospace Engineering
First Advisor
Hyejin Moon
Abstract
This research studies velocity fields resulted from the marangoni effect in a microscale droplet sandwiched in parallel plates. Surface tension becomes the dominant driving force as opposed to body forces as we move from the macroscale to microscale. Surface tension gradient is required to generate marangoni convection. This could be produced by a temperature gradient along the meniscus of the drop. To study this interfacial phenomenon, indium tin oxide micro thin film heater is utilized to create the necessary temperature gradient. Pure marangoni effect is studied by suppressing the evaporation effect on fluid flow by using an ionic liquid (molten salt) as the working fluid. Flow patterns have been visualized using nylon seeding particles under a polarized light microscope. The temperature distribution and velocity of the particles have been obtained using liquid crystal thermography (LCT) and micro particle image velocimetry (?PIV). The experimental data was validated by finite element analysis in COMSOL Multiphysics software. With recent advancements in the study of thermocapillary effect, microfluidic applications utilizing marangoni convection are gaining momentum. Applications include thermocapillary pumps, micromixers, actuators and sensors.
Keywords
Marangoni convection, Thermocapillary convection, Flow visualization
Disciplines
Aerospace Engineering | Engineering | Mechanical Engineering
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Shetye, Ajinkya Shrikrishna, "EXPERIMENTAL AND NUMERICAL STUDY OF MARANGONI CONVECTION IN A SANDWICHED DROPLET" (2016). Mechanical and Aerospace Engineering Theses. 776.
https://mavmatrix.uta.edu/mechaerospace_theses/776
Comments
Degree granted by The University of Texas at Arlington