Index Catalog // ScholarsArchive@OSU

Design and preliminary characterization of thermally-actuated pumps utilizing Marangoni and Leidenfrost effects

Creator:: Sedler, Stephen Joseph
Abstract:: Design and preliminarily characterization of two thermally-actuated pumps is presented in this thesis. The unique feature of both pumps is the presence of periodic asymmetrical structures on the channel walls. Two heat transfer effects are used with surface asymmetry to generate forces that drive the fluid in a preferential direction...
Resource Type:: Honors College Thesis
Full Text:: . Finally I would like to thank my committee members, Dr. A. Murty Kanury and Dr. Deborah Pence

Temperature measurement, electrical characteristics, and lorentz mixing of alkali seeded flames

Creator:: Pattee, Heidi Ann
Abstract:: When trace quantities of an alkali element are added to a flame, its optical and electrical properties change significantly. Addition of alkali seed to both premixed and diffusion flames has been used in the development of two new techniques, one for flame temperature measurement and the other for enhanced mixing....
Resource Type:: Dissertation
Full Text:: faculty members have served on my graduate committee: Dr. Dwight Bushnell, Dr. Max Deinzer, Dr. A. Murty

Characterization of the near-field flow structure of an acoustically self-excited jet in a large enclosure using particle image velocimetry (PIV)

Creator:: Tobias, Jason A.
Abstract:: An experimental study of the near-field flow structure produced by an incompressible turbulent Acoustically Self-Excited Jet (ASEJ) in a large enclosure using Particle Image Velocimetry (PIV) is presented. The salient feature of this jet is that it provides an increase in near-field mixing and turbulence without additional external power input....
Resource Type:: Masters Thesis
Full Text:: author would like to thank Dr. Jim Liburdy and Dr. Murty Kanury for the many great discussions both in

An experimental study of ammonia-water bubble absorption in a constrained microscale film

Creator:: Jenks, Jeromy W.
Abstract:: An experimental study of absorption of ammonia into a constrained thin film of ammonia-water solution is presented. A large aspect ratio microchannel with one of its walls formed by a porous material is used to constrain the thickness of the liquid film. Experiments were performed at a pressure of 1,...
Resource Type:: Masters Thesis
Full Text:: like to thank Dr. Jim Liburdy and Dr. Murty Kanury for insightful discussions during the course of my

Heat transfer during the piston-cylinder expansion of a gas

Creator:: Rodrigues, Matthew Jose
Abstract:: The expansion of a gas within a piston-cylinder arrangement is studied in order to obtain a better understanding of the heat transfer which occurs during this process. While the situation of heat transfer during the expansion of a gas has received considerable attention, the process is still not very well...
Resource Type:: Masters Thesis
Full Text:: Heat Transfer During the Piston-Cylinder Expansion of a Gas

Void fraction variations in a fractal-like branching channel network

Creator:: Cullion, Rebecca
Abstract:: Two-phase flow in a fractal-like branching microchannel heat sink may have enhanced heat transfer capabilities over single phase flow in the same branching channel network. In order to exploit this potential, a complete understanding of flow boiling in this geometry is required. The fractal-like geometry is similar to that of...
Resource Type:: Dissertation
Full Text:: . Charles Brunner, Dr. Murty Kanury, Dr. James Liburdy, and Dr. Vinod Narayanan for serving on my

Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface

Creator:: Shen, Jian
Abstract:: This study investigates the hydrodynamic characteristics of droplet impinging on heated surfaces using High Speed High Resolution (HSHR) imaging and evaluates the effect of surface temperature and using water and a nanofluid on a polished and a nano-structured surface. Three types of surfaces are used in the study: polished silicon,...
Resource Type:: Dissertation
Full Text:: Woods, Dr. Murty Kanury, Dr. Deborah Pence, and Dr. Vinod Narayanan for serving on my committee. I

A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

Creator:: Daniels, Brian J.
Abstract:: A one-dimensional numerical model has been developed to study diabatic and adiabatic flow boiling in microchannels. This model accounts for developing flow effects and variable property effects. The model uses correlations for void fraction and two-phase multipliers found in the literature. The model has been used to study the performance...
Resource Type:: Dissertation
Full Text:: presented on September 10, 2008. Title: A Study of Adiabatic and Diabatic Flow Boiling in Parallel

Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

Creator:: Yang, Guozhong
Abstract:: For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...
Resource Type:: Dissertation
Full Text:: : _________________________________________________ James A. Liburdy For

ScholarsArchive@OSU

Design and preliminary characterization of thermally-actuated pumps utilizing Marangoni and Leidenfrost effects

Temperature measurement, electrical characteristics, and lorentz mixing of alkali seeded flames

Characterization of the near-field flow structure of an acoustically self-excited jet in a large enclosure using particle image velocimetry (PIV)

An experimental study of ammonia-water bubble absorption in a constrained microscale film

Heat transfer during the piston-cylinder expansion of a gas

Void fraction variations in a fractal-like branching channel network

Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface

A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

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