Index Catalog // ScholarsArchive@OSU

CFD simulation of single-phase and flow boiling in confined jet impingement with in-situ vapor extraction using two kinds of multiphase models

Creator:: He, Xiaoliang
Abstract:: With continued development of the electronic industry, the demand for highly efficient heat removal solutions requires innovative cooling technologies. A computational fluid dynamic (CFD) study, including heat transfer, is performed for an axisymmetric, confined jet impingement experiencing boiling and coupled with vapor extraction. Boiling occurs at the target surface while...
Resource Type:: Masters Thesis
Full Text:: three-dimensional sector of the confined jet is employed in the simulation. A single circular

Mechanics of three-dimensional microenvironments of cells

Creator:: Jones, Christopher
Abstract:: The structure and mechanics of tissues affect many important cellular functions such as migration, differentiation, and growth. Mechanical interactions between cells and the extracellular matrix (ECM), as well as ECM-mediated mechanical communication between cells, plays a part in coordinating collective cellular dy- namics during critical processes such as morphogenesis, tissue...
Resource Type:: Dissertation
Full Text:: with strong orientational correlation between the fibers to an isotropic homogeneous network with no

A Computational Investigation of Natural Circulation Effects on Heat Transfer Coefficient and Friction Factor

Creator:: Buskirk, John
Abstract:: The nuclear industry has shown a large interest in natural circulation driven passive cooling systems following the Fukushima nuclear accident. Despite this interest, there is no widely used heat transfer correlation or friction factor correlation developed for natural circulation driven flow. A CFD analysis including grid convergence testing using Fluent...
Resource Type:: Masters Thesis
Full Text:: systems following the Fukushima nuclear accident. Despite this interest, there is no widely used heat

Validation of radiographic automatic exposure control device testing in the era of filmless radiography : and new variables associated with testing

Creator:: Allman, Robert M.
Abstract:: The exposure needed for a clinically useful image requires much less precision when using digital radiography (DR) than when using screen/film (SF) radiography. The Automatic Exposure Control (AEC) device was developed for ensuring accurate and precise exposures with SF technology. This thesis evaluates the importance of the AEC device in...
Resource Type:: Masters Thesis
Full Text:: values when no changes were made to the testing materials. The reproducibility test was considered

Evaluating the presence of radium-226 in soil surrounding a coal-fired power plant using the multi-agency radiation survey and site investigation manual (MARSSIM)

Creator:: Herring, Thomas A. (Thomas Andrew)
Abstract:: Coal-fired power plants constitute a significant source of energy production for the United States, and are projected to do so for decades to come. Most of the scrutiny coal-fired power plants receive is in the form of environmental concerns regarding green house gas emissions of carbon dioxide, sulfur dioxide, and...
Resource Type:: Masters Thesis
Full Text:: , there are no nuclear regulatory requirements imposed on coal plants. The focus of this study was to

Non-Stoichiometry in Bismuth Perovskite Solid Solutions

Creator:: Prasertpalichat, Sasiporn
Abstract:: The role of A-site non-stoichiometry was investigated in lead-free piezoelectric ceramics based on compositions in the 1-x(Bi₀.₅Na₀.₅TiO₃)-xBaTiO₃ system near the morphotropic phase boundary where x = 0.055, 0.06 and 0.07. The samples were prepared by a conventional solid state mixed oxide route with the A- site stoichiometry modified to incorporate...
Resource Type:: Dissertation
Full Text:: which the polarization can promptly switch by only 180° (i.e. there are no 90° domain walls). Since

Efficiency of a direct contact condenser in the presence of the noncondensable gas air compared to a tube and shell condenser

Creator:: Lebsack, Jonathan M.
Abstract:: Steam distillation is the traditional method used for the extraction of peppermint oil. This process is able to remove approximately 20% of the oils from the leaves of the plant. It is a very costly and un-sustainable process due to the release of carbon emissions. Solvent free microwave extraction promises...
Resource Type:: Masters Thesis
Full Text:: some of the nozzles coolant was lost as an aerosol with no way to quantify the loss. Comparing the

Advancing the understanding of bulk metallic glasses as structural materials through exploration of mechanical properties

Creator:: Naleway, Steven E.
Abstract:: Bulk metallic glasses (BMGs) offer a great deal of potential through their near-theoretical strength, potentially high toughness and unique forming and molding traits. However, there are still a number of outstanding issues that bar their widespread use. This thesis describes the investigation of three research questions each designed to further...
Resource Type:: Masters Thesis
Full Text:: concluded that there are no size effects in samples that conform to the KIC standards; however, size does

Investigation of In-tube Non-equilibrium Condensation of Low Global Warming Potential Refrigerants

Creator:: Jacob, Tabeel A.
Abstract:: This work investigates the in-tube condensation of low global warming potential (GWP) zeotropic refrigerant mixtures R448A, R450A, R452A, R454B and R454C. These refrigerants have been proposed for a wide range of commercial heating, ventilation, air-conditioning applications, but their heat and momentum transport phenomenon were not well understood. Thus, in this...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . 90 4.10 Saturated condensation heat transfer coefficient versus thermodynamic quality for R454B at G

Solution-based deposition of functional thin films : development of a glucose biosensor and thermal processing of CZTS nanoparticle films

Creator:: Durgan, Christopher J.
Abstract:: The development of solution-based methods for deposition of different thin film material is presented as an alternative to high cost vacuum-based methods. For certain materials, vacuum techniques are unsuitable for processing. Additionally, vacuum-based processes present high capital costs associated with equipment, and slow processing times. Atmospheric pressure solution based techniques...
Resource Type:: Masters Thesis
Full Text:: dropcast GOx on 10nm Pt/Au/PI, with no outer membrane

ScholarsArchive@OSU

CFD simulation of single-phase and flow boiling in confined jet impingement with in-situ vapor extraction using two kinds of multiphase models

Mechanics of three-dimensional microenvironments of cells

A Computational Investigation of Natural Circulation Effects on Heat Transfer Coefficient and Friction Factor

Validation of radiographic automatic exposure control device testing in the era of filmless radiography : and new variables associated with testing

Evaluating the presence of radium-226 in soil surrounding a coal-fired power plant using the multi-agency radiation survey and site investigation manual (MARSSIM)

Non-Stoichiometry in Bismuth Perovskite Solid Solutions

Efficiency of a direct contact condenser in the presence of the noncondensable gas air compared to a tube and shell condenser

Advancing the understanding of bulk metallic glasses as structural materials through exploration of mechanical properties

Investigation of In-tube Non-equilibrium Condensation of Low Global Warming Potential Refrigerants

Solution-based deposition of functional thin films : development of a glucose biosensor and thermal processing of CZTS nanoparticle films

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