Index Catalog // ScholarsArchive@OSU

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

Creator:: Kopczynski, Sean Peter
Resource Type:: Masters Thesis
Full Text:: Hydrodynamic signatures of a 2-D gas-solid fluidized bed

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Creator:: Matty, Ethan P.
Abstract:: This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
Resource Type:: Masters Thesis
Full Text:: phase from B to D along the dew point line. At D′ the mole fraction of R-32 in the liquid phase is

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Creator:: Bowen, Michael S.
Abstract:: Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
Resource Type:: Masters Thesis

The design of a mechanism for tensile testing in a liquid helium Dewar

Creator:: Fullman, Carl Harvey
Resource Type:: Masters Thesis
Full Text:: the School of Mechanical Enineerinf2 for their much needed assistance and eseciaily to Professor R

Assessing steel bevel gear design alternatives for sustainability performance through unit manufacturing process modeling

Creator:: Eastwood, Michael D.
Abstract:: As the growth in demand for sustainable manufacturing continues, companies must begin to make conscious design decisions with regard to the sustainability of their products. This means balancing economics of production with environmental and social performance. Thus, design and manufacturing engineers must consider economic, environmental, and social aspects simultaneously when...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Michael D. Eastwood

Assisting decision making in component design for sustainable manufacturing

Creator:: Eastlick, Dane D.
Abstract:: Current life cycle assessment tools are often deficient in assisting design for sustainable manufacturing efforts. Integrating an improved assessment method into a decision support framework will provide a means for designers and engineers to better understand the impacts of their decisions. A unit process modeling-based sustainability assessment method is presented...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Dane D. Eastlick

Design of a mechanically assisted dependent transfer mechanism for use on board commercial aircraft

Creator:: Gibson, Brenton D.
Abstract:: Business and recreation in the modern day world often include air travel as their cornerstone. Travelers who are disabled and wheelchair bound have to undergo a transfer process to board and deplane a commercial aircraft. This transfer process is typically done manually, with agents physically lifting the passenger who is...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Brenton D. Gibson for the degree of Master of Science in Mechanical

Mechanical engineering design across cultures : a method of designing for cultures

Creator:: Van Bossuyt, Douglas L.
Abstract:: Mechanical design is often based on formal methodologies such as Quality Function Deployment. Techniques to quantitatively account for attractability, sensory perception, and affective design have been successfully incorporated into these methods and are receiving growing acceptance across many industries. Although the adoption of these methods marks a large improvement for...
Resource Type:: Masters Thesis
Full Text:: R. Zaworski Mechanical design is often based on formal methodologies such as Quality Function

An investigation of the effects of radial acceleration on a fluidized bed used for filtration of air-borne particulate of submicron size

Creator:: Junge, David C.
Resource Type:: Dissertation
Full Text:: respect to fluidized beds. Doctoral Committee: R. W. Boubel, J. Go Mingle, F, a Schaumburg, L. D. Calvin

Integrated forward light scattering as a measure of aerosol mass concentration

Creator:: Tomine, Chris Shinya
Abstract:: A mathematical model was developed that relates the ratio, R, of two light flux measurements to the mass concentration, m, of the atmospheric aerosol particles between a source of parallel light (e.g., the sun) and the measuring system. R is defined as the ratio of the light fluxes passing through...
Resource Type:: Dissertation
Full Text:: the thesis committee: Dr. R. W. Boubel (major professor), Dr. D. Falkenberry, Dr. R. Wilson and Dr

Initial performance of rigid, porous sheets of sintered-polyethylene powder for filtering airborne sander dust

Creator:: Anderson, Charles Michael
Resource Type:: Dissertation
Full Text:: FILTERING AIR BORNE SANT"'D ThTTCT Redacted for privacy Abstract approved: R. W. Boubel The mechanisms

An experimental investigation of combustion products through a flat, laminar, pre-mixed hydrocarbon-air flame

Creator:: Brenchley, David Lee
Abstract:: Flat, laminar, premixed hydrocarbon-air flames were stabilized on a porous-plate burner. In addition to temperature profiles, concentration profiles were measured for methane, ethane, ethylene, propane, acetylene, propylene, carbon monoxide, carbon dioxide and oxides of nitrogen. Dead space thickness, luminous flame zone thickness and hydrocarbon disappearance point responses were also monitored....
Resource Type:: Dissertation
Full Text:: BRENCHLEY for the Ph. D. (Name) (Degree) in MECHANICAL ENGINEERING presented on ` % /' C j j ,i

An experimental investigation of drilling mud discharged into a flowing stratified environment

Creator:: Mohebbi, Behrooz
Abstract:: An experimental study of the short-term fate of a drilling mud discharged into a flowing stratified environment was conducted to determine its dilution and settling characteristics. The drilling mud used in this test had a specific gravity of 1.184 and a composition of 12 percent by weight high-gravity solids (BaSO₄)...
Resource Type:: Dissertation
Full Text:: approved: Dr. Lorin R. Davis An experimental study of the short-term fate of a drilling mud discharged

Evaluation of the predictive capability of two-phase flow maps for microchannel condensation of R-134a at low mass flux conditions

Creator:: VanderPutten, Michael A.
Abstract:: Predicting condensation flow regimes and the associated heat transfer and pressure drop in microchannels is critical for designing terrestrial and space systems for heating, cooling, power generation, and advanced manufacturing. It is well established that in flows approaching the microscale (Dh < 1 mm) gravity-dominated flow regimes become less relevant,...
Resource Type:: Masters Thesis
Full Text:: : Evaluation of the Predictive Capability of Two-Phase Flow Maps for Microchannel Condensation of R-134a at

Nonlinear adaptive control of highly maneuverable high performance aircraft

Creator:: Cho, Sul
Abstract:: This thesis presents an effective control design methodology using a one-step-ahead prediction adaptive control law and an adaptive control law based on a Lyapunov function. These control law were applied to a highly maneuverable high performance aircraft, in particular, a modified F/A-18. An adaptive controller is developed to maneuver an...
Resource Type:: Dissertation
Full Text:: Maneuverable High Performance Aircraft Abstract approved: R. R. Mohler This thesis presents an effective

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:: authors and attempts made to correlate the effects of these variables on the heat loss. 13 L r 0 D

Sampling submicrometer particles suspended in near sonic and supersonic free jets of air

Creator:: Martone, Joseph Arthur
Abstract:: This experiment is concerned with sampling submicrometer particles in near sonic and supersonic flows. The study employed a high volume condensation aerosol generator to produce stearic acid particles having a geometric mean diameter of 0.8 μm and a geometric standard deviation of 1.28. The aerosol was diluted with dry air...
Resource Type:: Dissertation
Full Text:: . The guidance of Professor R. W. Boubel, my major professor, has helped immeasurably throughout this

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:: AN ABSTRACT OF THE THESIS OF Eric D. Zeuthen for the

Water table analogue for compressible flow studies

Creator:: Pouderoux, Pierre
Resource Type:: Masters Thesis
Full Text:: -... , .. :..r. '·'· ·~IY .~ I ·4-. . ._ --' I :J.f ----. . 'h L ·'· ''"" t ... .. d 1"' :}5 ~Tt.t ·t=l--".1~1

The conversion of solar radiation to heat energy using a trough-type parabolic mirror

Creator:: Mackie, Keith Leroy
Resource Type:: Masters Thesis
Full Text:: surface depends upon how much dust, ozone, water vapor and air it must D I R E C T S O L A R R A D

Mechanical and stress-optical properties of photoelastic materials

Creator:: Teshima, Yoshio
Resource Type:: Masters Thesis
Full Text:: *r Redacted for Privacy Erta Sr;1r lr Dror.aid !tp.C E {rllr f. .hm ,, : ACKNOWLEOOMENT

Selection and testing of pyrometers for high-temperature gas flow

Creator:: Merklin, Eldon Oren
Resource Type:: Masters Thesis
Full Text:: Orgrl,r Ii!'LLta ACKNOWLEDGEMENTS This project could not have been carried out without the

Stress distribution about a square hole in a uniaxial tension plate

Creator:: Hays, Donald Frank
Resource Type:: Masters Thesis
Full Text:: the degree of ç' m-'r ' (IT l £LL OI June 1952 tPPRO VED: Assistant Profes'or of

Stress distribution in models subjected to dynamic loading

Creator:: Schlappi, Herman Casper
Resource Type:: Masters Thesis
Full Text:: submitted to OREGON STATE COLLEGE in partial fulfillment of the requirements for the d egree of

A design study of an all year solar-energized residential air conditioning system

Creator:: English, Richard Arthur, 1929-
Resource Type:: Masters Thesis
Full Text:: Arthur D, Hughes for his suggestions and advice, and Professor F. O. McNillan for his assistance in

Study of static performance of turbo jet engine

Creator:: Chiou, Jiunn-perng
Resource Type:: Masters Thesis
Full Text:: the honor to express his deep grateful appreciation to Mr. A. D. Hughes, Major Professor and

Fracture energies of Zircaloy and some zirconium alloys

Creator:: Rawers, James C.
Abstract:: The fracture mechanics of Charpy V-notch specimens of Zircaloy-4 and phosphorus contaminated Zircaloy-4 were investigated. Three-point bend and impact tests with Charpy V-notch samples provided an efficient and economical method of fracture evaluation. Fracture failure was monitored by the force-displacement curve. Failure was initially analyzed using fracture toughness values as...
Resource Type:: Dissertation
Full Text:: approved: Redacted for Privacy W. D. McMullen The fracture mechanics of Charpy V-notch specimens of

Characteristics of a capillary air washer

Creator:: Robins, Charles Samuel
Resource Type:: Masters Thesis
Full Text:: .L h ItrtDrIlDr Redacted for Privacy lrcfirrr ef Drp*rirr*t d lrSnlerl fr.f,lrmfrf Ir efs*r rf

Determination of temperature gradients in clay soil surrounding a heat pump ground coil

Creator:: Hyde, Paul Elmer
Resource Type:: Masters Thesis
Full Text:: -x ';here r d x 2/ T = soil temperature at any selected aistance £roni the pipe, Fahrenheit

The effect of alpha phase morphology on the impact energy of commercial purity titanium

Creator:: York, James Michael
Abstract:: Samples of commercial purity titanium were heat treated above the beta transformation temperature and within the two phase alpha-beta phase field, followed by cooling at varying rates. Testing of the samples in tension and by instrumented impact indicated that some strengthening could be imparted by these heat treatments, although at...
Resource Type:: Masters Thesis
Full Text:: privacy William D. McMullen Samples of commercial purity titanium were heat treated above the beta

Some factors affecting the heat transfer in a finned tube radiator using low pressure steam and hot water as a heat source

Creator:: Waterhouse, Alvin Sidney
Resource Type:: Masters Thesis
Full Text:: requirements for the degree of MASTER OF SCIENCE June 1960 APPROVED: Professo r of Mechanical

Catastrophic propagation of ductile cracks in metallic foils

Creator:: Elliott, Leonard Thomas
Abstract:: The sudden failure of metal structures under load, which has been a design problem for many years, is characterized by a crack propagation rate which approaches the speed of sound in the material. These failures, which are often known as catastrophic fractures, may be divided into two types which depend...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS The author wishes to e>qpress his appreciation and gratitude to Professor R. D. Olleman of the

The suspension drying of sawdust

Creator:: Gregg, Gale B.
Resource Type:: Masters Thesis
Full Text:: ' AOKNOWLEDGMENTB The author wishes to express his appreciation to A. D. Hughes, Professor ot Meohs.nical

Effects of selected minor alloying additions on the structure deformation characteristics of beryllium

Creator:: Dooley, George Joseph, III
Abstract:: Solid solution alloying was employed in an attempt to produce some relatively ductile form of beryllium. If the c/a ratio could be significantly altered, it was felt new or different slip systems could be activated. The following elements were selected on the basis of atomic size, melting point, crystal structure...
Resource Type:: Dissertation
Full Text:: of this orientation f, the r + {ow} A D B C E FIGURE 2. Important planes and

The use of a Stirling hot-air engine in converting solar energy to mechanical power

Creator:: Boehme, Martin Leon
Resource Type:: Masters Thesis
Full Text:: sincerely grateful to Professor Arthur D. Hughes of the Department of' Mecharical Enineerin for his

Exploring the Ductility Minimum of Niobium C103 at Intermediate Temperatures using Triaxial Tensile Specimens

Creator:: Wood, Thomas N., II
Abstract:: This work explores the mechanical properties of single-phase niobium alloy C103 from room temperature to 600°C for the purpose of expanding safe uses of the material into new applications. The study utilizes a symmetrically notched triaxial tensile specimens to manipulate the internal stress field in order to observe the changes...
Resource Type:: Masters Thesis
Full Text:: that for this type of geometry, at very low strain, or sharper notches - with an R/d less than

Control of peak stresses in tensile testing machine components subjected to shock loading

Creator:: Mitchell, Jack Alan
Abstract:: The mechanical properties of materials at cryogenic temperatures have been the subject of increasing interest during the past few years, although very little actual materials testing has been done at extremely low temperatures because of the high cost and low heat of vaporaization of liquid helium. Recently, the Department of...
Resource Type:: Masters Thesis
Full Text:: = 0 dx d t2 + ß2S = 0 The general solution to the first equation can be written as: and R(x

The method of characteristics for irrotational flow of a semi-perfect gas

Creator:: Rayl, Stephen Christopher
Resource Type:: Masters Thesis
Full Text:: in the fo rrn A .. 2B C D , (29) where Ac2- Ø2C2 u2 , (29.1) B = -ØØ = - uy , (29.2) r

High-pressure steam service for O.S.C. Engineering Laboratory

Creator:: Lynch, James Edward
Resource Type:: Masters Thesis
Full Text:: - t5) through 85% magnesia ln r5 ---r"4 q • 0 •22 (t5 • t 6 ) 0.25 outside surface to air D

Indentation hardness of Douglas fir and Western hemlock lumber related to density

Creator:: Corder, Stanley E.
Abstract:: Indentation hardness tests were made on sections of 211 pieces of Douglas fir and 208 pieces of Western hemlock at a moisture content of about 11 percent. Specific gravity and visual-density evaluations were also determined. Correlation coefficients for linear regression of density, as measured by specific gravity, on average standard...
Resource Type:: Masters Thesis
Full Text:: approved William D. McMullen Indentation hardness tests were made on sections of 211 pieces of Douglas

Measurement and scrubbing of SO₂ and NOx from boiler flue gases

Creator:: Reichel, Rolf Hubertus
Abstract:: At the Oregon State University heating plant the primary source of heat energy is natural gas with crude oil as the standby supply of fuel. In the future, as natural gas becomes a rarer commodity, more reliance will be placed on the use of the more expensive, more polluting, but...
Resource Type:: Masters Thesis
Full Text:: MASTER OF SCIENCE (Name) (Degree) in MECHANICAL ENGINEERING presented on ;R-0,e-i, /// (9;73 (Major

An experimental determination of coefficients for the contraction and diffusion of submerged jets in series.

Creator:: Heacock, Harold Wendall
Resource Type:: Masters Thesis
Full Text:: . Schack and D. N. Nathis who assisted in the experi- mental work. The original suggestion for the use

A dynamic procedure for evaluation resilient mountings

Creator:: Arents, Chester Abbo
Resource Type:: Masters Thesis
Full Text:: . . . . . . . . 13 D yn ami c Te st . . . . . . . . . . . . . . . i 3 Limitations and Refinements

Experimental combustion analysis and development of representative fuel specifications for selected wood and refuse derived fuel pellets from the Pacific Northwest

Creator:: Haluzak, Charles Craig
Abstract:: An experimental biomass combustion facility has been built and established at Oregon State University. The furnace, or Biomass Combustion Unit ( BCU ), uses an augertype fuel feed system, grate-type fuel support with under and over fire air supply. Fourteen pellet species from five States - Alaska, Washington, Oregon, Idaho,...
Resource Type:: Masters Thesis
Full Text:: B. Pellet Codes 142 C. Pellet Fuel Data 145 D. Combustion Experiment Data 169 E. Fuel Hopper

The Effect of Isothermal Aging on the Development of Long-Range Order in Ni-based Alloys

Creator:: Aerne, Nicholas S. J.
Abstract:: Nickel (Ni)-based alloys with a high chromium (Cr) content are frequently employed in applications where elevated temperatures and/or corrosive environments are present due to their excellent corrosion resistance and mechanical properties. However, a gap exists around the formation, and kinetics of long-range order (LRO) Ni2Cr phase in both model binary...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Julie D Tucker Nickel (Ni)-based alloys with a high chromium (Cr) content are frequently

An improved separator for use in the field distillation of peppermint oil

Creator:: Powne, Robert Edney
Resource Type:: Masters Thesis
Full Text:: gratefull appreciation to Professor A. D. Hughes of the Mechanical Engineering Department for his

Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel

Creator:: Fast, Cody P.
Abstract:: Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Julie D. Tucker

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:: horizontal array. Pin spacing was parameter- ized by using pitch-to-diameter ratios of P/D = 2.0, 2.5 and

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:: the density change accompanying the phase-change process. The commercial numerical code, Flow 3-D

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

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