Index Catalog // ScholarsArchive@OSU

Experimental study of impulse turbines and permanent magnet alternators for pico-hydropower generation

Creator:: Cobb, Bryan R.
Abstract:: Increasing access to modern forms of energy in developing countries is a crucial component to eliminating extreme poverty around the world. Pico-hydro schemes (less than 5-kW range) can provide environmentally sustainable electricity and mechanical power to rural communities, generally more cost-effectively than diesel/gasoline generators, wind turbines, or solar photovoltaic systems....
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF Bryan R. Cobb for the degree of Master of Science in Mechanical Engineering

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Creator:: Matty, Ethan P.
Abstract:: This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
Resource Type:: Masters Thesis
Full Text:: a Zeotropic Mixture, R-454C, and its Individual Components, R-1234yf and R-32, in Microfin Tubes

Direct Numerical Simulation of a Flat Wing with a Movable Front Flap at High Angles of Attack and Low Reynolds Numbers

Creator:: Drost, Kevin J.
Abstract:: Low Reynolds number airfoils have become of interest recently for applications on Micro-air Vehicles (MAVs). Airfoils at low Reynolds numbers and high angles of attack are known to be unstable due to low lift to drag ratios. This study investigates the effect of a movable leading edge flap on the...
Resource Type:: Honors College Thesis
Full Text:: Thesis AN ABSTRACT OF THE THESIS OF Kevin J

Radiation Emissions from Turbulent Premixed Jet-A/Air Flames Diluted with Combustion Products

Creator:: Hoter, Zohar R.
Abstract:: Heat flux measurements of radiation emissions from turbulent premixed flames diluted with N 2 and CO 2 were taken to identify sensitivities of radiation heat loss to diluent fraction and species. This work is motivated by the desire to better characterise radiant heat transfer in the presence of combustion products,...
Resource Type:: Honors College Thesis
Full Text:: example of emissions from a flame and background. The total radiation heat transfer, Qr, is then

Microchannel steam-methane reforming under constant and variable surface temperature distributions

Creator:: Eilers, Benn J.
Abstract:: Steam-methane reforming is a well understood industrial process used for generating hydrogen and synthesis gas. The reaction is generally carried out with residence times on the order of one second. By performing this reaction at microscales it is possible to take advantage of increased heat transfer rates and low diffusion...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Benn J. Eilers for the degree of Master of Science in Mechanical

Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

Creator:: Apreotesi, Mario A.
Abstract:: It is hypothesized that increases in pressure drop due to vapor generation during boiling in microchannels can be reduced by extraction of vapor at its point of inception. Ultimately, this local vapor extraction decreases the pressure drop required to drive the flow through a fractal-like branching, microchannel flow network within...
Resource Type:: Masters Thesis
Full Text:: approved: ________________________________________________ Deborah V. Pence It is hypothesized

RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

Creator:: Drost, Kevin J.
Abstract:: Natural stream systems contain a variety of ﬂow geometries which contain ﬂow separation, turbulent shear layers, and recirculation zones. This work focuses on streams with dead zones. Characterized by slower ﬂow and recirculation, dead zones are naturally occurring cutouts in stream banks. These dead zones play an important role in...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kevin J. Drost for the degree

Numerical study of flow maldistribution in microchannels using fully resolved simulation

Creator:: Martin, Mathieu Georges Charles
Abstract:: This thesis addresses numerical simulation of flow maldistribution in microchannels. Microchannels are often associated with two phase-flows which can generate many problems such as plugging the channel or perturbing the flow. In this study we have used CFD and fully resolved technique to simulate what would happen in the case...
Resource Type:: Masters Thesis
Full Text:: : Sourabh V. Apte This thesis addresses numerical simulation of flow maldistribution in microchannels

A numerical study of inertial flow features in moderate Reynolds number flow through packed beds of spheres

Creator:: Finn, Justin Richard
Abstract:: In this work, flow through synthetic arrangements of contacting spheres is studied as a model problem for porous media and packed bed type flows. Direct numerical simulations are performed for moderate pore Reynolds numbers in the range, 10 ≤ Re ≤ 600, where non-linear porescale flow features are known to...
Resource Type:: Dissertation
Full Text:: Spheres Abstract approved: Sourabh V. Apte In this work, flow through synthetic arrangements of

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:: AN ABSTRACT OF THE THESIS OF Bryan R. Kelly for the degree of

ScholarsArchive@OSU

Experimental study of impulse turbines and permanent magnet alternators for pico-hydropower generation

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Direct Numerical Simulation of a Flat Wing with a Movable Front Flap at High Angles of Attack and Low Reynolds Numbers

Radiation Emissions from Turbulent Premixed Jet-A/Air Flames Diluted with Combustion Products

Microchannel steam-methane reforming under constant and variable surface temperature distributions

Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

Numerical study of flow maldistribution in microchannels using fully resolved simulation

A numerical study of inertial flow features in moderate Reynolds number flow through packed beds of spheres

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

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search