Index Catalog // ScholarsArchive@OSU

Drying rates of Douglas fir veneer in superheated steam

Creator:: Atherton, George H. (George Harry), 1920-1987
Resource Type:: Masters Thesis
Full Text:: for advice and as- sistance of Dr. James R. Welty of the Mechanical Engineering De- partment. He

Heat generation rates of nonfissionable materials in a nuclear reactor environment

Creator:: Zimmerman, Paul James
Abstract:: Radiation induced heat generation rates of several nonfissionable materials were measured calorimetrically in a nuclear reactor environment. The calorimeter was uniquely designed to allow many materials of grossly different heat generation rates to be measured. heat transfer characteristics of the calorimeter were determined analytically and experimentally. Materials were chosen to...
Resource Type:: Masters Thesis
Full Text:: Rates of Nonfissionable Materials In A Nuclear Reactor Environment by Paul James Zimmerman A THESIS

Numerical study of natural convection in square partitioned and non-partitioned enclosures

Creator:: Sukkaset, Prasart
Abstract:: Heat transfer characteristics and associated temperature and flow fields for natural convection in two-dimensional, square, partitioned and non-partitioned enclosures have been determined for Grashof numbers ranging from 10³ to 10⁶. The vertical side walls of the enclosure are isothermal with all other surfaces assumed to be adiabatic. An adiabatic partition...
Resource Type:: Dissertation
Full Text:: privacy Prqgessor James R. Wel Heat transfer characteristics and associated tem- perature and flow

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
Full Text:: Abstract approved: James R. Welty/ A steady gas convection model of heat transfer to a horizontal

An experimental study of plane jets issuing at various angles into a cross-flow

Creator:: Hadjilambrinos, Constantine
Abstract:: An experimental study of the properties of plane jets issuing at various angles into a cross-flow of air was conducted to obtain information relating to the momentum diffusion properties of the jet flow in order to provide a background for predicting the feasibility of the preswirl concept of the Volumetric...
Resource Type:: Masters Thesis
Full Text:: /h = 8 73 A.6 Velocity distribution in jet cross-section for R = 4.0, 0 = 90, y/h = 14 5 61 A.7

The effect of entrance configuration on local heat transfer coefficients in subsonic diffusers

Creator:: Stoffel, Edward Oswald
Abstract:: The effects of round, square, and reentrant entrances on flow regimes and local heat transfer coefficients were determined using a symmetrical, plane-wall two-dimensional, subsonic air diffuser with one of the diverging walls heated and maintained isothermal. Flow and heat transfer studies were made at total divergence angles ranging from 0...
Resource Type:: Masters Thesis
Full Text:: SUBSONIC DIFFUSERS Abstract approved: James R. We'ty The effects of round, square, and reentrant

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

Creator:: Pagnani, Bruno Richard
Resource Type:: Dissertation
Full Text:: solutions for this problem have been obtained for an aspect ratio (H /L) of five, over a Rayleigh number

An experimental study of natural convection in air between a vertical isothermal flat plate and a parallel insulated flat plate

Creator:: Kim, Sung-Soo
Abstract:: Natural convection heat transfer in air between two vertical plates 38 by 24 inches was investigated in this work with spacings between the plates of 0.625, 1.0 and 1.75 inches. One plate was isothermal and the other adiabatic. To measure the point velocities in the air layer a very thin...
Resource Type:: Masters Thesis
Full Text:: FLAT PLATE AND A PARALLEL ,INSULATED. FLAT PLATE Redacted for privacy James R. Welt Abstract approved

Heat and mass transfer rates associated with the drying of plywood veneer using superheated steam at various angles of impingement

Creator:: South, Veeder, III
Resource Type:: Masters Thesis
Full Text:: IMPINGEMENT Abstract approved:____ James R. Weltr Southern pine and Douglas fir sapwood veneer were dried

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
Full Text:: Fluidized Bed Abstract approved: Redacted for privacy (James R. Welty) An experimental study is described

The study of active sites and bubble formation frequency in nucleate boiling heat transfer

Creator:: Aoki, Tadao
Abstract:: The heat-transfer mechanism studied in this experiment was pool boiling from a flat horizontal surface facing upward with the bulk liquid at its saturation temperature. The hot-film anemometer probe was introduced to boiling heat-transfer analysis as a possible device for counting active nucleation sites and for other investigations such as...
Resource Type:: Masters Thesis
Full Text:: appreciation goes to Dr. James R. Welty for his valuable suggestions throughout this project. Also I would

Heat and mass transfer rates associated with the drying of Southern pine and Douglas fir veneer in air and in steam at various temperatures and angles of impingement

Creator:: Laity, Walter William
Abstract:: Southern pine and Douglas fir veneer samples were dried in air under the following conditions: air temperatures were 350, 600, and 750°F; air velocities were 50, 100, and 150 feet per second, and angles of impingement of air against the veneer surfaces were 0°, 45°, and 90°. The resulting drying...
Resource Type:: Masters Thesis
Full Text:: in Air and in Steam at Various Ternpertures ap.d 4ngles of Im Abstract approved: James R. Wlty

An experimental study of natural convection in air between a vertical isothermal flat plate and a parallel insulted flat plate

Creator:: Lee, Soon Mo
Abstract:: The free convective heat transfer phenomena in air between two vertical plates 24 by 38 inches spaced 15.895 mm apart, was investigated in this experimental study. One plate was isothermal and, the other adiabatic. A quartz fiber anomometer was used for measuring local velocities in the air between the vertical...
Resource Type:: Masters Thesis
Full Text:: vertical position. V James R. elty An Experimental Study of Natural Convection in Air Between a

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
Full Text:: presented June 4, 1981 Typed by Donna Lee Norvell-Race for Alan H. George ACKNOWLEDGEMENT The work

The design, construction and calibration of an instrumented surface for convective heat transfer studies

Creator:: Meyers, Stanley Kent
Abstract:: The purpose of this thesis work has been the design, construction and calibration of an instrumented surface for convective heat transfer studies. The surface is in the form of a flat plate roughly 24 inches wide by 48 inches long. It is made up of 48 individual cells, laminated side-by-side...
Resource Type:: Masters Thesis
Full Text:: STUDIES. Abstract approved: Redacted for Privacy James R. 'Welty The purpose of this thesis work has

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

Creator:: Popescu, Aristotel
Resource Type:: Dissertation
Full Text:: Flow and Heat Transfer in Rectangular Microchannels. Abstract approved: James R. This thesis reports

Radiation from an infinite plane to parallel rows of infinitely long tubes - hottel extended

Creator:: Qualey, Douglas L.
Abstract:: A two-dimensional model for predicting the rate of radiation heat transfer for the interior of an industrial furnace is described. The model is two-dimensional due to the assumptions of the heat source as an infinite radiating plane and the heat sink as rows of parallel tubes that are both infinite...
Resource Type:: Masters Thesis
Full Text:: configuration. 44 24 A demonstration of how row separation distance H varies for changes in tube center-to

Performance of rotary regenerative heat exchanger--a numerical simulation

Creator:: Bae, Young Lib
Abstract:: This thesis examines the transient and steady-state temperature performance of a rotary regenerative heat exchanger. In contrast to previous studies on this problem, fluid flow in the circumferential direction was considered. Appropriate modeling was included to measure the effect of carry-over on the differential equations describing mass and energy conservation....
Resource Type:: Dissertation
Full Text:: like to express my sincere appreciation to Dr. James Welty for his continuing help and guidance during

A comparative study of the performance of pin finned heat sinks for cooling electronic components by natural convection

Creator:: Manolescu, Mircea Ion
Abstract:: A study was conducted to determine the heat transfer characteristics of pin finned heat sinks in natural convection. Three pin diameters were studied: 0.238 cm, 0.318 cm and 0.396 cm. The pins were attached to the base in two arrangements, triangular and rectangular, forming a horizontal array. Pin spacing was...
Resource Type:: Masters Thesis
Full Text:: . To Dr. James R. Welty for the always patient way of giving valuable advice and for constant

Experimental investigation of natural convection of mercury in an open, uniformly heated, vertical channel

Creator:: Colwell, Robert G.
Abstract:: An experimental investigation was conducted to determine characteristics of natural convection of mercury in a vertical channel, which was open at both ends. Two cases were investigated separately: 1) both walls uniformly and symmetrically heated, and 2) one wall heated with the other insulated. Heat transfer correlations in laminar flow...
Resource Type:: Dissertation
Full Text:: heated plate 123 7.2: H(n ) vs. n, Ar=2, 124 7.3: H(n ) vs. n, Ar=3, 124 7.4: H(n ) vs. n, Ar=4 125

Natural convection cooling of vertical plates in an enclosure : a numerical simulation

Creator:: Destremau, Axel
Resource Type:: Masters Thesis
Full Text:: I would like to thank very much my major professor, Dr. James R. Welty, for his constant

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
Full Text:: EXPERIMENTAL INVESTIGATION OF TRANSITION POOL BOILING Abstract approved: Redacted for Privacy James 1 Welty

Laminar natural convection in vertical tubes with one end closed

Creator:: Fukuda, Masao
Resource Type:: Dissertation
Full Text:: department head, Dr. James R. Welty for his constructive suggestions to my thesis work and financial

A pipe entry length solution for heat transfer and flow in Powell-Eyring fluids with temperature-dependent viscosity and constant flux boundary condition

Creator:: Etchart, David Ygnacio
Resource Type:: Masters Thesis
Full Text:: BOUNDARY CONDITIOly1 r. 411 Redacted for Privacy Abstract approved: Dr. James 'R. *eity Solutions were

An experimental investigation of heat transfer in the transition and turbulent regimes for natural convection in mercury in a uniformly heated vertical channel

Creator:: Humphreys, William Warren
Resource Type:: Masters Thesis
Full Text:: persons. Dr. James Welty, my major professor: The freedom under which he allowed me to operate

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
Full Text:: James R. Welty Experimental data are reported for the time-averaged local radiative and total heat

An experimental investigation of natural convection heat transfer from an array of uniformly heated vertical cylinders to mercury

Creator:: Dutton, Jonathan Craig
Abstract:: An experimental investigation was conducted for natural convection heat transfer in an array of uniformly heated vertical cylinders in mercury. The test section consisted of seven electrically heated cylinders of 1.365 inch diameter and 3.825 inch heated length arranged in an equilateral triangular pattern. In order to preclude side flow...
Resource Type:: Masters Thesis
Full Text:: take this opportunity to thank the many people who offered their assistance. Dr. James Welty was the

An investigation into the mechanisms of adherence between borosilicate glass and steatite ceramic and between borosilicate glass and alumina ceramic

Creator:: Peck, Roger Lee
Abstract:: A qualitative evaluation was made of the adherence between borosilicate glass and the ceramics, steatite and alumina. Three basic adherence studies were performed. (1) A comparison between the x-ray diffraction patterns of the ceramic and the fused glass-ceramic powder mixture was made to determine if any new compounds were formed...
Resource Type:: Masters Thesis

Monte Carlo simulation of radiation heat transfer in a three-dimensional enclosure containing a circular cylinder

Creator:: Hong, Seung-Ho
Resource Type:: Masters Thesis
Full Text:: , Dr. James R. Welty, for his encouragement and guidance throughout the course of this study. Thanks

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
Full Text:: for Privacy James R. elty An experimental study was made of heat transfer to the laminar flow of

An experimental study of combined forced and free convective heat transfer to non-Newtonian fluids in the thermal entry region of a horizontal pipe

Creator:: Kim, Yong Jin, 1956-
Resource Type:: Dissertation
Full Text:: Abstract approved: James R. Welty \, The case of combined free and forced convection heat transfer in

A numerical model for predicting energy dispersion in thermal plumes issuing from large, vertical outfalls in shallow coastal water

Creator:: Trent, Donald S.
Abstract:: A theoretical study of the heat and momentum transfer resulting from a flow of power plant condenser effluent discharged vertically to shallow, quiescent coastal receiving water is presented. The complete partial differential equations governing steady, incompressible, turbulent flow driven by both initial momentum and buoyancy are solved using finite-difference techniques...
Resource Type:: Dissertation
Full Text:: APPROVED: Redacted for Privacy Dr. James R. Welt , Professor of De artment of Mechanical Engineering In

Use of an optical probe to study the hydrodynamics of a gas-solid fluidized bed

Creator:: Arib, Fouad
Resource Type:: Masters Thesis
Full Text:: major professor, Dr. James R. Welty, for his guidance and valuable advice during the course of this

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

Creator:: Pidwerbecki, David
Resource Type:: Dissertation
Full Text:: Temperature Fluidized Bed Abstract approved: c}t V James R. Welty Experimental results and a predictive

Laminar natural convection in vertical tubes with one end open to a large reservoir

Creator:: Wu, Yissu
Resource Type:: Dissertation
Full Text:: VERTICAL TUBES WITH ONE END OPEN TO A LARGE RESERVOIR Abstract approved: James R. Welty The problem of

On design and field evaluation of the noise control features of the Lake Oswego water treatment plant

Creator:: Reeder, Harry Cromwell
Abstract:: Concern about noise pollution has swept the country. People are conscious of their environment and are trying to preserve or to improve it. When the City of Lake Oswego selected a site for their water treatment plant, they had to assure the neighbors that it would not increase the ambient...
Resource Type:: Masters Thesis
Full Text:: '. james IR. Welty Concern about noise pollution has swept the country. People are conscious of their

Cold trap performance : a general analysis

Creator:: Rothwell, Micheal Olin
Abstract:: A cold trap is a device used to remove certain impurities from a liquid metal by controlled precipitation of such impurities. An investigation of the thermal characteristics of laminar flow in two air-cooled cold traps was made. This investigation showed that the sodium heat transfer rate is a function of...
Resource Type:: Masters Thesis
Full Text:: for Privacy Abstract approved: James R. Wjlty A cold trap is a device used to remove certain

Investigation of instantaneous hydrodynamics and heat transfer to a horizontal tube immersed in a high-temperature gas-solid fluidized bed of large particles

Creator:: Burr, Marlene Mainland
Resource Type:: Dissertation
Full Text:: Redacted for privacy ACKNOWLEDGEMENTS I would like to thank Dr. James R. Welty for his helpful, kind

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
Full Text:: encouragement of the author's major advisor Dr. James R. Welty are gratefully acknowledged. His efforts were a

The use of a hot film anemometer to measure velocities below five cm/sec in mercury

Creator:: Hurt, John Calvin
Abstract:: A constant temperature anemometer, utilizing quartz coated hot film probes, was used to measure velocities from .1 to 5 cm/sec. The effects on anemometer performance due to time, reimmersion, and metallic sensor coatings were examinated by repeated calibrations of the probes. Contrary to previous published results, calibration change due to...
Resource Type:: Masters Thesis
Full Text:: definition of the convective heat transfer coefficient: P = h -rr doL(To - Te) (3) where h = average

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
Full Text:: FLOW WITH ARBITRARY CIRCUMFERENTIAL WALL HEAT FLUX Abstract approved: Redacted for privacy James R

Dislodgement and deformation of microbubbles in laminar channel flow

Creator:: Tence, David A.
Abstract:: In this thesis the critical parameters involved in the dislodgement and deformation of microbubbles in laminar channel flow, are determined and evaluated. Experimentally the effects of surface tension, viscosity, fluid flow rate, density, and bubble diameter on bubble dislodgement were evaluated. A theoretical scale analysis was performed which provided a...
Resource Type:: Masters Thesis
Full Text:: Laminar Channel Flow Abstract approved: Redacted for Privacy James R. Welty In this thesis the

Experimental and analytical characterization of bidirectional reflectance data for engineering materials

Creator:: Zaworski, Joseph Robert
Abstract:: Bidirectional reflectance is a fundamental property used for the analysis of radiative heat transfer. It is a form of reflectivity in which the spectral and directional dependencies of both the beam incident on a surface and the beam reflected from the surface are specified. A new system has been designed...
Resource Type:: Dissertation
Full Text:: Abstract Approved: /James R. Welty Bidirectional reflectance is a fundamental property used for the

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
Full Text:: -direction x with arrow means h = convection heat transfer coefficient (Btu/hr ft2 oF) k = thermal

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

Solid/liquid phase change in small passageways : a numerical model

Creator:: Coven, Patrick J.
Abstract:: During the operation of phase-change ink-jet printers a bubble formation phenomenon often occurs. These bubbles are detrimental to the operation of the printer and substantial efforts are made to remove them. The objective of this research was 1: to develop a fundamental understanding of how bubble or void formation occurs...
Resource Type:: Masters Thesis
Full Text:: , Wright Research and Development Center, Wright-Patterson AFB, OH. Singh, B.N. and Trinkaus, H., 1991

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:: James K. Welty The volumetric receiver is an advanced solar central receiver concept designed to

Hydrodynamic signatures of a 2-D gas-solid fluidized bed

Creator:: Kopczynski, Sean Peter
Resource Type:: Masters Thesis
Full Text:: Fluidized Bed. Abstract approved: Redacted for Privacy James R. Welty! Experimental observations of

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