Index Catalog // ScholarsArchive@OSU

Natural Convection Heat Transfer and Boundary Layer Transition for Vertical Heated Cylinders

Creator:: Goodrich, Sam S.
Abstract:: In recent years, the global nuclear industry has placed a greater emphasis on passively safe reactor designs. In particular, much attention and design work has been applied to engineered systems for passive cooling of nuclear fuel, whether it be loaded in a core or stored in spent fuel pools. The...
Resource Type:: Dissertation

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

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

Creator:: Pagnani, Bruno Richard
Resource Type:: Dissertation

A numerical solution for heat transfer to non-Newtonian fluids with temperature-dependent viscosity for arbitrary conditions of heat flux and surface temperature

Creator:: Cochrane, G. F. (Glenn Frank)
Resource Type:: Dissertation

An experimental investigation of natural convection heat transfer from vertical flat plates in mercury

Creator:: White, Donald Henry
Abstract:: Heat transfer from a vertical flat plate in an infinite pool of mercury was investigated. Velocity profiles were measured with a hot-film anemometer and simultaneous temperature profiles measured with thermocouples in this low Prandtl number liquid metal. Constant heat flux plates at Grashof numbers of 9 x 10⁸ and 4...
Resource Type:: Dissertation

An experimental investigation of transition pool boiling

Creator:: Aoki, Tadao
Abstract:: The heat-transfer phenomena studied in this work were associated with pool boiling from a flat horizontal surface facing upward with the bulk liquid at its saturation temperature. The analysis of boiling sound and the investigation of the transition boiling mechanism constituted the essence of the present study. The distinctively large...
Resource Type:: Dissertation

A study of the effects of heat transfer on the performance of a wetted-wall column : a refinement of the design correlation of Chilton-Colburn

Creator:: Chatlynne, Charles Jule
Resource Type:: Dissertation

Analysis of heat transfer, including axial conduction, for laminar tube flow with arbitrary circumferential wall heat flux

Creator:: Faghri, Mohammad
Abstract:: This thesis is concerned with the analysis of heat transfer in a tube with forced flow under conditions of an arbitrary variation of wall heat flux both axially and circumferentially. This total study is separated into two distinct problems which are presented separately. The first is the case of a...
Resource Type:: Dissertation

An experimental study of forced convection heat transfer to non-Newtonian fluids in the thermal entry region of a horizontal, uniformly heated, circular pipe

Creator:: Bassett, Charles Earl
Resource Type:: Dissertation

An analytical model of heat transfer to a horizontal cylinder immersed in a gas fluidized bed

Creator:: Adams, Ronald Lynn
Abstract:: A steady gas convection model of heat transfer to a horizontal cylinder immersed in a gas fluidized bed is presented. Contributions due to flow within attached bubbles as well as the interstitial voids are included. The interstitial flow is approximated as flow within a series of double cusped channels and...
Resource Type:: Dissertation

Heat transfer to horizontal tubes in fluidized beds : experiment and theory

Creator:: Catipovic, Nikola Milivoj
Resource Type:: Dissertation

An experimental study of heat transfer to a horizontal tube in a large particle fluidized bed at elevated temperature

Creator:: George, Alan Herbert
Resource Type:: Dissertation

A theoretical study of the radiative contribution to heat transfer between a high-temperature, large-particle gas-fluidized bed and an immersed tube

Creator:: Mahbod, Bahram
Abstract:: An analytical model of the radiative contribution to the total heat transfer between a large-particle (greater than 1 mm) gas-fluidized bed and an immersed horizontal tube is discussed. The model is applied to the case of a bubbling bed and the emulsion phase contribution is obtained from a detailed analysis...
Resource Type:: Dissertation

Experimental studies of heat transfer with an array of horizontal tubes immersed in a high-temerature fluidized bed

Creator:: Goshayeshi, Ali
Abstract:: An experimental study is described in which time-average local heat transfer coefficients were obtained for arrays of horizontal tubes immersed in a hot fluidized bed. Spatial-averaged heat transfer coefficients, computed from local values, are also reported. Refractory particles with surface mean diameters of 2.14 mm and 3.23 mm were fluidized...
Resource Type:: Dissertation

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

An experimental study of radiative and total heat transfer between a high temperature fluidized bed and an array of immersed tubes

Creator:: Lei, David Hsien-Yu
Abstract:: Experimental data are reported for the time-averaged local radiative and total heat transfer coefficients for both an array of horizontal tubes as well as a single horizontal tube immersed in a large-particle fluidized bed at elevated temperatures. Spatial-averaged heat transfer coefficients computed from the local values, using a simple trapezoidal...
Resource Type:: Dissertation

An experimental study of natural convection heat transfer from a horizontal cylinder array vertically aligned to and confined by a single wall and two walls

Creator:: Al-Alusi, Thamir R.
Abstract:: Convection heat transfer was experimentally investigated for two different geometries. One case had three horizontal cylinders in a vertical plane placed between two vertical walls. The second case had three horizontal cylinders in a vertical plane with only one vertical wall. Several different cylinder center-tocenter spacings were investigated. The wall...
Resource Type:: Dissertation

Synthesis of colloidal metal oxide nanocrystals and nanostructured surfaces using a continuous flow microreactor system and their applications in two-phase boiling heat transfer

Creator:: Choi, Chang-Ho
Abstract:: Metal oxide nanocrystals have attracted significant interests due to their unique chemical, physical, and electrical properties which depend on their size and structure. In this study, a continuous flow microreactor system was employed to synthesize metal oxide nanocrystals in aqueous solution. Assembly of nanocrystals is considered one of the most...
Resource Type:: Dissertation

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

Heat transfer in the splash-zone of a high temperature fluidized bed

Creator:: Pidwerbecki, David
Resource Type:: Dissertation

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

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

Creator:: Popescu, Aristotel
Resource Type:: Dissertation

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

Pressure losses and heat transfer for the flow of mixtures of immiscible liquids in circular tubes

Creator:: Finnigan, Jerome Woodruff
Resource Type:: Dissertation

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

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