Index Catalog // ScholarsArchive@OSU

Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

Creator:: Wang, Zhefu
Abstract:: The thermal wave technique has been explored for the use of liquid thermal conductivity measurement and flow property diagnostics in this dissertation. For liquid thermal conductivity measurements, an experimental technique based on the thermal wave approach is developed. A stainless steel strip functions as both a heating element and a...
Resource Type:: Dissertation
Full Text:: :______________________________________________________ Richard B. Peterson The thermal wave technique has been explored for the use of liquid

Design, modeling and performance of miniature reciprocating expander for a heat actuated heat pump

Creator:: Herron, Thomas G.
Abstract:: A miniature reciprocating expander is being developed as part of a larger program to develop a heat actuated heat pump for portable applications. By utilizing the higher energy density of liquid hydrocarbon fuels relative to batteries, a heat actuated heat pump would be able to provide cooling for much longer...
Resource Type:: Masters Thesis
Full Text:: : - / - .- Richard B. Peterson A miniature reciprocating expander is being developed as part of a larger program to

An experimental study of flow boiling heat transfer enhancement in minichannels with porous mesh heating wall

Creator:: Wang, Hailei
Abstract:: A unique channel surface enhancement technique via diffusion-bonding a layer of conductive fine wire mesh onto the heating wall was developed and used to experimentally study flow boiling enhancement in parallel microchannels. Each channel was 1000 μm wide and 510 μm high. A dielectric working fluid, HFE 7000, was used...
Resource Type:: Dissertation
Full Text:: to his academic advisor Dr. Richard Peterson for his continuous guidance and support during his

Single rod wetting with simulated fuel-cladding gap

Creator:: Gaines, Stephen Frank
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy Richard E. Collingha h.D. This thesis presents the results of falling

Effect of vibration on forced convection to water from a cylinder at Reynolds numbers in the range of stable vortex shedding

Creator:: Graves, Donald Larry
Abstract:: An experimental investigation has been made of the effect of vibration on heat transfer from a cylinder in crossflow. The cylinder used was 3/16-inch in diameter and was sinusoidally oscillated in the vertical direction by a mechanical drive mechanism while immersed in an open water channel. Nominal amplitude ratios, a/d,...
Resource Type:: Masters Thesis
Full Text:: EFFECT OT' VIBRATION ON T'ORCED CONVECTION TO WATER FROM A CYLINDER AT REYNOLDS NUMBERS IN THE RANGE OF

An explicit finite-difference solution for natural convection in air in rectangular enclosures

Creator:: Pagnani, Bruno Richard
Resource Type:: Dissertation
Full Text:: convection in air in rectangular enclosures AN ABSTRACT OF THE THESIS OF BRUNO RICHARD PAGNANI for the

An experimental study of fluid flow and heat transfer in rectangular microchannels

Creator:: Popescu, Aristotel
Resource Type:: Dissertation
Full Text:: showed friction factors generally larger, and transition to turbulence occurring at lower Reynolds

Heat transfer coefficient of boiling ammonia in an incline tube

Creator:: Holstege, Conrad Johan Marie
Resource Type:: Masters Thesis
Full Text:: r w () y" dh h' is the individual heat transfer coefficient in Btu/hr-°F-ft2, r is the heat

Local shell-side heat transfer coefficients in baffled tubular heat exchangers

Creator:: Ambrose, Tommy W.
Resource Type:: Dissertation
Full Text:: progresses to the trailing edge. The type of curve obtained is dependent on the Reynolds number dV 't /r

Scaling analysis of the Direct Reactor Auxiliary Cooling System for Gas-cooled Fast Reactors during a Depressurized Loss of Forced Convection Event

Creator:: Blake, Grant C.
Abstract:: The Direct Reactor Auxiliary Cooling System (DRACS) is a passive safety system capable of removing decay heat directly from the reactor core. Its modularity makes it scalable for use in reactors with various power levels. Work has previously been completed to support inclusion of the DRACS in liquid metal reactors...
Resource Type:: Masters Thesis

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:: adiabatic. Friction factors, in laminar flow, varied as predicted from analysis. The critical Reynolds

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:: corresponding to jet Reynolds numbers of 5000 to 11000. The jet-to-surface spacings varied from 1 to 4 jet

Single Phase and Flow Boiling Heat Transfer and Flow Characterization in Microscale Pin Fin Heat Sinks

Creator:: Rasouli, Erfan
Abstract:: The ever increasing requirements for heat dissipation in various thermal management applications such as computer chip cooling and high power electronics have necessitated the need for novel thermal management techniques. Thermal management using heat sinks with microscale features is amongst the prominent techniques developed over the past two decades. In...
Resource Type:: Dissertation
Full Text:: pin fins. The LN2 and PF5060 experiments’ Reynolds number (𝑅𝑒𝐷ℎ, based on pin fin hydraulic

The effect of geometric orientation and random wind conditions on flat plate convection rates

Creator:: Melchior, Daniel K.
Abstract:: An experimental investigation has been performed to determine the forced convection heat transfer due to three-dimensional air flow over a flat plate as a function of angle of attack and free stream velocity. The experimental method employed a transient thermal technique and placed the convecting surface next to the exhaust...
Resource Type:: Masters Thesis
Full Text:: beyond the nozzle width. The flows evaluated ranged in Reynolds number from 32,000 to 140,000 and from

Radiation Emissions from Turbulent Diffusion Flames Burning Large Hydrocarbon Fuels

Creator:: Zeuthen, Eric D.
Abstract:: The purpose of this study is to measure and compare radiation emissions from flames burning large hydrocarbon fuels to assist in understanding how the molecular composition changes radiation emissions. Radiative heat transfer is significant because it is a primary mode of heat transfer for many combustion devices. This study also...
Resource Type:: Masters Thesis
Full Text:: production. The flames were stabilized using a piloted turbulent diffusion burner. The Reynolds numbers

Stability analysis on single-phase natural circulation in Argonne Lead Loop Facility

Creator:: Tang, Hong
Abstract:: Natural convection provides a means for circulating fluids without the use of pumps. This type of system is of great interest for a wide variety of applications, including solar heaters, process industry, and nuclear reactors. Natural convection will play a vital role in the area of passive safety and reliability,...
Resource Type:: Masters Thesis
Full Text:: the natural circulations could be linearly unstable in a high Reynolds number region. Increasing loop

Flow characteristics of semi-confined impinging jet arrays

Creator:: Dano, Bertrand P. E.
Abstract:: The present study proposes to investigate the flow structure of different arrays of jets impinging on a flat surface enclosed by three walls, creating a channel that forces the air to leave in one preferential direction, generating a self sustain crossflow. Details of both the mean and some turbulence quantities...
Resource Type:: Masters Thesis
Full Text:: major axis (0°) and one where the crossflow was along the minor axis (90°). The Reynolds number ranged

Local heat transfer rate and bubble dynamics during jet impingement boiling

Creator:: Mani, Preeti
Abstract:: Characterization of local boiling trends, in addition to the typically reported area-averaged trends, is essential for the robust design and implementation of phase change technologies to sensitive heat transfer applications such as electronics cooling. Obtaining the values of heat fluxes corresponding to locally varying surface temperatures has been a challenge...
Resource Type:: Dissertation
Full Text:: '' heat flux [W/cm 2 ] r radius [m] Ra Rayleigh number Re Reynolds number t substrate thickness

Moving bed heat transfer and fluidized elutriation

Creator:: Colakyan, Manuk
Abstract:: Two problems relating to the processing of solid streams are treated in two sections. The first section is the study of heat transfer between an immersed cylinder and a moving bed of solids: An instrumented heated cylinder was placed in the flow stream of a moving bed of solids with...
Resource Type:: Dissertation
Full Text:: direction, m2K/W u g Dp g ReD = Reynolds number, [-] uod pp g Re d = particle Reynolds number, [-] r

Numerical design of a high-flux microchannel solar receiver

Creator:: Rymal, Charles
Abstract:: This thesis discusses the design of several microchannel solar receiver devices for use in CSP (concentrated solar power) using CFD (computational fluid dynamics) simulations. The goal is to demonstrate that, by taking advantage of the higher heat transfer coefficienct of microchannels, solar receivers can achieve higher efficiency than current receiver...
Resource Type:: Masters Thesis
Full Text:: from 200 W to 400 W. These values are determined by the capacity of the solar simulator, which will

ScholarsArchive@OSU

Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

Design, modeling and performance of miniature reciprocating expander for a heat actuated heat pump

An experimental study of flow boiling heat transfer enhancement in minichannels with porous mesh heating wall

Single rod wetting with simulated fuel-cladding gap

Effect of vibration on forced convection to water from a cylinder at Reynolds numbers in the range of stable vortex shedding

An explicit finite-difference solution for natural convection in air in rectangular enclosures

An experimental study of fluid flow and heat transfer in rectangular microchannels

Heat transfer coefficient of boiling ammonia in an incline tube

Local shell-side heat transfer coefficients in baffled tubular heat exchangers

Scaling analysis of the Direct Reactor Auxiliary Cooling System for Gas-cooled Fast Reactors during a Depressurized Loss of Forced Convection Event

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

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

Single Phase and Flow Boiling Heat Transfer and Flow Characterization in Microscale Pin Fin Heat Sinks

The effect of geometric orientation and random wind conditions on flat plate convection rates

Radiation Emissions from Turbulent Diffusion Flames Burning Large Hydrocarbon Fuels

Stability analysis on single-phase natural circulation in Argonne Lead Loop Facility

Flow characteristics of semi-confined impinging jet arrays

Local heat transfer rate and bubble dynamics during jet impingement boiling

Moving bed heat transfer and fluidized elutriation

Numerical design of a high-flux microchannel solar receiver

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