Index Catalog // ScholarsArchive@OSU

Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Creator:: Strahl, Jordan D.
Abstract:: The application of a flapping foil with prescribed trailing edge motion to energy harvesting in a low reduced frequency (k = fc/U∞) regime was experimentally studied. The effects of the phase and amplitude of the applied trailing edge motion upon time-variant power extraction capability have been measured and are interpreted....
Resource Type:: Masters Thesis
Full Text:: , both directly and indirectly. I would further like to express my thanks to Dr. Deborah Pence for being

Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

Creator:: Lewis, Kevin T.
Abstract:: As drop-on-demand (DOD) applications continue to gain ground in desktop inkjet-printing, 3D printing, fluid mixing, and other areas the demand for higher frequency operations are beginning to push against the current physical boundaries in DOD technology. The current research is exploring the possibility of controlling drop volume and velocity at...
Resource Type:: Masters Thesis
Full Text:: different vibration cycle waveforms. The 11.25 V Positive Step Waveform case measures the meniscus height

Modeling convective boiling flow with in-situ local vapor extraction

Creator:: Salakij, Saran
Abstract:: The pressure drop of convective boiling flow may be reduced by extracting vapor locally since the entire generated vapor does not have to travel through the entire channel length. In this study, the theoretical model was developed to simulate a convective boiling flow through a fractal-like branching microchannel network with...
Resource Type:: Masters Thesis
Full Text:: void fraction R Universal gas constant chα Channel aspect ratio R ext Extraction resistant vβ

Characterization of flow boiling in a fractal–like branching microchannel network

Creator:: Edward, Lee M.
Abstract:: Based on experimental investigations the present study evaluates flow instability and void fraction in a fractal-like branching microchannel network with rectangular cross-section. The hydraulic diameter of the channels ranged from 308μm at the inlet to 143μm at the outlet. The flow network used is characterized by set branching ratios for...
Resource Type:: Masters Thesis
Full Text:: of research. I would also like to thank Dr. Deborah Pence and Dr. Vinod Narayanan for all of their

Lift and drag characteristics of flexible pitching and heaving wings

Creator:: Rushen, Jesse
Abstract:: There is a pressing need for Micro Air Vehicles (MAV) that are light, powerful, and efficient to perform military reconnaissance missions and search and rescue operations. These MAVs have length scales on the order of 10 cm, where traditional steady flight wing designs perform poorly. An alternative flight mechanism is...
Resource Type:: Masters Thesis
Full Text:: v in g A m p lit u d e ( m ) 0 1 2 3 4 5 6 7 -20 0 20 P it c h in g A m p lit u

Analysis of spillway hydrodynamics for total dissolved gas prediction downstream of hydropower projects with free, plunging spillway jets

Creator:: Germann, Nathan A.
Abstract:: During spring and early summer hydropower projects are often forced to spill water through their spillways due to increased river flows of the runoff season. Flows which are directed through spillways--instead of through turbines--contain a substantial amount of energy. Stemming from the high energy content, spillway flows entrain air at...
Resource Type:: Masters Thesis
Full Text:: Hydropower Projects with Free, Plunging Spillway Jets. Abstract Approved: Kendra V. Sharp

Passive pumping in pool and open channel configurations via meso-scale asymmetric surface patterning

Creator:: Strid, Logan
Abstract:: The research presented in this thesis is a continuation of collaboration between Oregon State University and Auburn University studying the feasibility of passively pumping liquid during boiling in a preferential direction using meso-scaled asymmetric surface patterns. Such a passive phase-change mechanism has great potential for thermal management in spacecraft and...
Resource Type:: Masters Thesis

Study of a constrained-film bubble absorber under cycle operating conditions

Creator:: Cardenas, Ruander
Abstract:: An experimental and numerical study of absorption of ammonia vapor bubbles into a constrained thin film of ammonia-water solution is presented in the context of a potential reduction in size of a heat-actuated heat pump component. A large-aspect-ratio channel with a depth of 600 µm restricts the thickness of the...
Resource Type:: Masters Thesis
Full Text:: compression of vapor refrigerant (absorption at A, pumping at P, desorption at D, expansion at V

Vortex Generator Flow Control for an Upper-Surface Blown Aircraft Wing with an Extended Coanda Flap

Creator:: Kelly, Bryan R.
Abstract:: Integrated Distributed Electric Augmented Lift (IDEAL) applies upper-surface blowing in a novel way using an array of electric ducted fans (EDFs) to achieve electric short take-off and landing to meet the growing need for urban air transportation. Additional research on the use of vortex generators (VGs) to reduce flow separation...
Resource Type:: Masters Thesis
Full Text:: (𝑉) on the upper surface must increase as the cross-section area (𝐴) decreases, as shown by the

Combustion Characteristics of a Jet Fuel and its Surrogate in MILD Conditions

Creator:: Weide, Parker D.
Abstract:: This research seeks to identify how changes in temperature and oxygen concentration in the reaction zone affects liftoff heights for moderate or intense low-oxygen dilution (MILD) combustion of a jet fuel and a surrogate fuel. MILD combustion offers a method of burning fuels with reduced CO and NOx production by...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

Modeling convective boiling flow with in-situ local vapor extraction

Characterization of flow boiling in a fractal–like branching microchannel network

Lift and drag characteristics of flexible pitching and heaving wings

Analysis of spillway hydrodynamics for total dissolved gas prediction downstream of hydropower projects with free, plunging spillway jets

Passive pumping in pool and open channel configurations via meso-scale asymmetric surface patterning

Study of a constrained-film bubble absorber under cycle operating conditions

Vortex Generator Flow Control for an Upper-Surface Blown Aircraft Wing with an Extended Coanda Flap

Combustion Characteristics of a Jet Fuel and its Surrogate in MILD Conditions

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