Index Catalog // ScholarsArchive@OSU

An experimental study of friction factors and mixed convection in the thermal entrance region of vertically narrow, horizontal rectangular channels for different heating conditions and aspect ratios

Creator:: Hong, Seung-Ho
Abstract:: Heat transfer and fluid mechanical behavior of water flowing horizontally in vertically-narrow rectangular channels was studied in this work. Friction factor and Nusselt number variations were determined experimentally for four different wall heating conditions, and for aspect ratios(height to width) of 5, 4, 3, 2, and 1. Wall heating conditions...
Resource Type:: Dissertation
Full Text:: privacy ACKNOWLEDGMENTS I would like to thank my major professor, Dr. James R. Welty, who guided me

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 Lee M. Edward for the degree of Master of Science in Mechanical Engineering presented on June

Volumetric receiver development : a heat transfer and design evaluation of an advanced air heating solar thermal central receiver concept

Creator:: Drost, M. K.
Abstract:: The volumetric receiver is an advanced solar central receiver concept designed to produce high temperature air. This document presents the results of a heat transfer and performance evaluation of the volumetric receiver concept. The volumetric receiver consists of an array of ceramic fins or fibers arranged in concentric rows around...
Resource Type:: Dissertation
Full Text:: THESIS OF M. Kevin Drost for the degree of Doctor of Philosophy in Mechanical Engineering presented on

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:: : Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester Abstract approved: James Liburdy

Design and optimization of a heating-only heat pump for Western Pacific Northwest applications

Creator:: Elger, Donald Francis
Abstract:: The use of the conventional air-source heat pump for residential space conditioning has increased dramatically over the past decade. Historically these units have been designed as air conditioners which could also be used to provide heating. However, for the climatic region of the Western Pacific Northwest (the geographic region west...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Gordon M. Reistad The use of the conventional air-source heat pump for residential

Investigation of Destratification in Warehouses

Creator:: Polander, Michael D.
Abstract:: A significant source of energy consumption comes from maintaining desired indoor environment conditions in warehouses and other industrial facilities. In efforts to combat the raising energy costs, studies into more efficient heating and cooling strategies has been a topic of consideration for a number of years. One of the areas...
Resource Type:: Masters Thesis
Full Text:: of Destratification in Warehouses Abstract approved: Brian M. Fronk A significant source of energy

Experimental study of subcooled water spray cooling using flow symmetric micro-structured surfaces

Creator:: Tulchinsky, Alex M.
Abstract:: Spray impingement cooling has been shown to be a leading candidate for future high heat flux cooling applications. In general, spray cooling curves consist of three heat flux regimes; single-phase, two-phase and critical heat flux (CHF). CHF is considered the design limit for almost all two-phase cooling applications, as a...
Resource Type:: Masters Thesis
Full Text:: : Deborah V. Pence James Liburdy Spray impingement cooling has been shown to be a

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

Evaporator analysis for application to water-source and ice-maker heat pumps

Creator:: Aceves, Salvador M.
Abstract:: Water-source and ice-maker heat pumps share many characteristics. However, each presents different technical difficulties that have prevented them from being used more widely. In a water-source heat pump a very important consideration is to reduce water consumption, while in an ice-maker heat pump a major concern is to reduce the...
Resource Type:: Dissertation
Full Text:: : Gordon M. Reistad Water-source and ice-maker heat pumps share many characteristics. However, each

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Creator:: Siala, Firas F.
Abstract:: The rising global trend to reduce dependence on fossil fuels has provided significant motivation toward the development of alternative energy conversion methods and new technologies to improve their efficiency. Recently, oscillating energy harvesters have shown promise as highly efficient and scalable turbines, which can be implemented in areas where traditional...
Resource Type:: Dissertation
Full Text:: Harvesting Regime Abstract approved: James A. Liburdy The rising global trend to reduce dependence on

ScholarsArchive@OSU

An experimental study of friction factors and mixed convection in the thermal entrance region of vertically narrow, horizontal rectangular channels for different heating conditions and aspect ratios

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

Volumetric receiver development : a heat transfer and design evaluation of an advanced air heating solar thermal central receiver concept

Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Design and optimization of a heating-only heat pump for Western Pacific Northwest applications

Investigation of Destratification in Warehouses

Experimental study of subcooled water spray cooling using flow symmetric micro-structured surfaces

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

Evaporator analysis for application to water-source and ice-maker heat pumps

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

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