Index Catalog // ScholarsArchive@OSU

Effects of a thin, flexible nozzle on droplet formation and impingement

Creator:: Hawke, Shane R.
Abstract:: The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Shane R. Hawke for the degree of Master of Science in Mechanical

Interactions of a fully modulated inclined jet with a crossflow

Creator:: Dano, Bertrand P. E.
Abstract:: Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in...
Resource Type:: Dissertation
Full Text:: : Interactions of a Fully Modulated Inclined Jet with a Crgssflow. Abstract approved: James A. Liburdy Jets in

Mechanically Enhanced and Optically Compatible Hydrogels for Particle Image Velocimetry in Porous Flow

Creator:: Cornwell-Arquitt, Luke
Abstract:: Hydrogels have been attractive for use as a medium in porous flow studies, but have always been limited in this role because of their poor mechanical properties. This project analyzes and tests two recently developed hydrogels, poly(methacrylamide-co-methacrylic acid) (PMM), and a heat-treated long chain PVA hydrogel. Particle image velocimetry (PIV)...
Resource Type:: Honors College Thesis
Full Text:: approved:_____________________________________________________ James Liburdy Hydrogels have been

Leading Edge Separation Analysis of Oscillating Airfoil Energy Harvesters

Creator:: Ngo, Vickie
Abstract:: Oscillating foil energy harvesters are analyzed at optimal reduced frequencies (𝑘=𝑓𝑐/𝑈) to determine how the leading edge radius of curvature affects leading edge separation. The understanding of leading edge separation and its behaviors is critical to predicting the transient lift profile of an airfoil. The separation is therefore also critical...
Resource Type:: Masters Thesis
Full Text:: approved: James A. Liburdy Oscillating foil energy harvesters are analyzed at optimal reduced

Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

Creator:: Sangplung, Saangrut
Abstract:: Droplet formation from a flexible nozzle plate driven by a prescribed-waveform excitation of a piezoelectric is numerically investigated using a computational fluid dynamics (CFD) model with the VOF method. The droplet generator with a flexible nozzle plate, which is free to vibrate due to the pressure acting on the plate,...
Resource Type:: Dissertation
Full Text:: Multiple Droplet Impingement Abstract approved: James A. Liburdy Droplet formation

A numerical model of drop-on demand droplet formation from a vibrating nozzle and a rigid nozzle

Creator:: Yang, Guozhong
Abstract:: Droplet formation from a rigid and a vibration nozzle driven by a pulsing pressure is simulated. Droplet formation is simulated by using one-dimensional model. For the case of droplet formation from a vibration nozzle, the nozzle vibration is simulated by large deflection plate vibration equation. Droplet formation from a rigid...
Resource Type:: Masters Thesis
Full Text:: pressure input 59 NOMENCLATURE A: Cross section area, A = 'r. r2 Bo: Bound number C: Damping

Study of Energy Harvesting Performance of Oscillating Airfoils using a Discrete Vortex Model

Creator:: Kamrani Fard, Kiana
Abstract:: The energy harvesting performance of oscillating airfoils is studied using a discrete vortex model (DVM) with a leading-edge separation criterion. The airfoil undergoes a combined sinusoidal heaving and pitching motion at reduced frequencies of k = 0.06 − 0.16, with heaving amplitude of h0 = 0.5c, and pitching amplitude of...
Resource Type:: Dissertation
Full Text:: Abstract approved: James A. Liburdy The energy harvesting performance of oscillating airfoils is studied

Effects of orifice geometry and surface boundary condition on heat transfer of impinging jet array

Creator:: Kanokjaruvijit, Koonlaya.
Abstract:: The effects of the orifice geometry and the surface boundary condition on the heat transfer distribution to a flat surface of an impinging jet array were investigated. The jet array impinged normally onto the surface which was either isothermal or had a uniform heat flux. The experiments were performed for...
Resource Type:: Masters Thesis
Full Text:: , Abstract approved: James A. Liburdy 0 The effects of the orifice geometry and the surface boundary

A study of the characteristics of oscillatory surface instabilities leading to droplet formation

Creator:: Daniels, Brian J.
Abstract:: The characteristics of the free surface in an orifice driven by a periodic forcing function have been studied both theoretically and experimentally. In the theoretical study, two wall boundary condition cases were examined: 1) the radial velocity at the wall of the orifice is zero; and 2) the axial velocity...
Resource Type:: Masters Thesis
Full Text:: Characteristics of Oscillatory Surface Instabilities Leading to Droplet Formation. Abstract Approved: James A

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

Effects of a thin, flexible nozzle on droplet formation and impingement

Interactions of a fully modulated inclined jet with a crossflow

Mechanically Enhanced and Optically Compatible Hydrogels for Particle Image Velocimetry in Porous Flow

Leading Edge Separation Analysis of Oscillating Airfoil Energy Harvesters

Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

A numerical model of drop-on demand droplet formation from a vibrating nozzle and a rigid nozzle

Study of Energy Harvesting Performance of Oscillating Airfoils using a Discrete Vortex Model

Effects of orifice geometry and surface boundary condition on heat transfer of impinging jet array

A study of the characteristics of oscillatory surface instabilities leading to droplet formation

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

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