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Cutthroat Flow Measuring Flumes For Flat Gradient Channels, Gaylord V. V. Skogerboe Jan 1969

Cutthroat Flow Measuring Flumes For Flat Gradient Channels, Gaylord V. V. Skogerboe

Reports

The cutthroat flume can operate either as a free or submerged flow structure. Submerged flow calibration curves and free flow equations have been developed. Rectangular cutthroat flume sizes of 1, 2, 3, 4, and 6 feet were studied and tested in the laboratory. Trapezoidal cutthroat flumes having zero (or V-shaped), 6-inch, and 12-inch throat widths were calibrated. The value of transition submergence is listed for each of the rectangular and trapezoidal cutthroat flumes. The most obvious advantage of a cutthroat flume is economy, since fabrication is facilitated by a flat bottom and removal of the throat section. Another advantage is …

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Hydraulics Of Large Bed Element Channels, Harl E. Judd, Dean F. Peterson Jan 1969

Hydraulics Of Large Bed Element Channels, Harl E. Judd, Dean F. Peterson

Reports

No abstract provided.

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Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler Jan 1969

Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler

Masters Theses

"The continuous discharge of lead-zinc mine and mill wastewater into some streams in southeastern Missouri may alter the ecology of those streams. A field and laboratory study was conducted to evaluate the potential pollution problem. Bee Fork Creek, the first stream in that area to receive tailings from mining operations, was selected for this study and periodically surveyed. Laboratory tests included static bioassays of lead, zinc, and copper, and the mode of action of the metals was investigated through post-mortem examination of the experimental fish. The test animals used in the bioassays were bluegill sunfish (Lepomis macrochirus, Rafinesque). The heavy …

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State Assignments For Non-Normal Asynchronous Sequential Circuits, Gary Keith Maki Jan 1969

State Assignments For Non-Normal Asynchronous Sequential Circuits, Gary Keith Maki

Masters Theses

"There is a lack of procedures that can be used to find good internal state assignments for asynchronous sequential circuits operating in the non-normal mode. Presented here, are two generalized state assignments, which are functions only of the number of rows in a flow table. The suggested bounds for the generalized state assignments are m + [log₂m] and m + [m/2] internal state variables for a 2m-row flow table, where [ ] means "next lowest integer". Both generalized state assignments produce group (linear) codes. The algorithms for generating these internal state assignments are easy and straight-forward to implement. …

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A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani Jan 1969

A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani

Masters Theses

"Three lumped parameter model representations of the one-dimensional uniform continuous system in a vibration state are examined. The exact (continuous) solutions were used as a reference to evaluate the accuracy of the results obtained via these discrete element models. The model comparisons, carried out for both the principal modes and the systems under forced excitations, are based on the maximum strain energy. The effect of varying the number of segments in the model representation showed improvement in approximating the exact strain energy solution as the number of segments was increased. In general, the results of the model comparisons based on …

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The Analysis Of R-S-S-R Spatial Four-Bar Mechanism, David Perng Chyi Jan 1969

The Analysis Of R-S-S-R Spatial Four-Bar Mechanism, David Perng Chyi

Masters Theses

"Although many methods are known for the kinematic analysis of spatial mechanisms, such as descriptive geometry, vector analysis, dual number theory, matrices, screw calculus, and various other methods, a better way to analyze the specific R-S-S-R four-bar mechanism is to use tensor methods in order to eliminate the apparently formidable and tedious tasks of mathematically formulating problems and obtaining solutions. The analysis described in this paper is developed basically by using tensor notations and operations, and the calculations take advantage of the capabilities of modern digital computers. A FORTRAN program for the IBM 360 Data Processing System which will analyze …

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The Use Of Turbulence Energy Equation In Boundary Layer Study, Ro-Chi Tai Jan 1969

The Use Of Turbulence Energy Equation In Boundary Layer Study, Ro-Chi Tai

Masters Theses

"A turbulent boundary layer problem has been studied analytically and compared with an available experiment in the literature. Correlations of the experimental data were made to investigate the validity of the commonly used empirical relations on turbulent shear stresses. It was found that the model which related the local turbulent shear stress linearly with the local turbulent kinetic energy, as used by Bradshow et. al., appeared to be most reasonable. combining this model with the expression of turbulent viscosity given by Boussinesq, it was then possible to introduce the turbulence-energy equation in addition to the governing equations of continuity and …

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A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya Jan 1969

A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya

Masters Theses

"A theoretical analysis of the free vibrations of a clamped circular plate was undertaken. The effects of transverse shear were considered for application to relatively thick plates in which there exist sharp transients and frequencies corresponding to higher modes. The method adopted by R. D. Mindlin was used to develope [sic] the differential equation of motion for the plate. The damping effect due to the resistance of the medium in which the plate vibrates was also considered. This damping was assumed to be due to the generation of pressure waves caused by the displacement of the plate...Since the solution requires …

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Computer-Aided Design Of Lossless Non-Uniform Transmission Lines, Larry Lee Wesner Jan 1969

Computer-Aided Design Of Lossless Non-Uniform Transmission Lines, Larry Lee Wesner

Masters Theses

"A numerical iterative design technique is presented for the synthesis of lossless non-uniform transmission lines. A variational approach is used to minimize an error functional to which the system and boundary equality constraints have been adjoined by Lagrangian multipliers. The resultant network optimization conditions lead to an iterative scheme requiring analysis of the non-uniform line, analysis of an adjoint system and calculation of the error gradient in parameter space. A steepest descent procedure is used to optimize parameter values. Finite difference equations are used to provide an approximation model for implementation on the digital computer. A design example and a …

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The Design Of Three-Port Strip Line Circulator, Jeng Seng Chang Jan 1969

The Design Of Three-Port Strip Line Circulator, Jeng Seng Chang

Masters Theses

"This dissertation is concerned with the analysis and design of the radius of ferrite disk of strip line circulator using a generalized analytical field expression. The first part consists of an analysis of the field in the ferrite disk with the TEM wave incident normally on the air-ferrite boundary. It is approximated by taking the boundary condition at the incident and outlet points, so that analytical expressions for the electric and magnetic fields can be obtained. The next part consists of an approximate method to determine the radius of the ferrite disk based on the result obtained in the first …

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Design Of R-C-C-R Spatial Mechanism, Kao-Chien Hsei Jan 1969

Design Of R-C-C-R Spatial Mechanism, Kao-Chien Hsei

Masters Theses

"An analysis to design a particular R-C-C-R spatial mechanism was developed using tensor notations and operations. This specific R-C-C-R spatial mechanism can be used to couple two shafts intersected at a skew angle with constant rotating speed ratio. This skew angle, or bending angle of the two shaft, may vary from 30 up to 180 degrees. The governing equations of relative positions of the mechanism were formulated as a function of two variables: the bending angle of the shafts and the rotating angle of the input link. To exemplify the various design conditions, the design parameter versus the bending angle …

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Film Boiling From Inclined Flat Surfaces, Charles Ernest Price Jan 1969

Film Boiling From Inclined Flat Surfaces, Charles Ernest Price

Masters Theses

"The object of this investigation was to determine the effect of inclination on the heat transfer for saturated film pool boiling from a flat plate heater. Nitrogen at atmospheric pressure was used as the test fluid. The test plate was oriented at various angles from the horizontal position and the convective film coefficient was determined for each angle. Tests were conducted for heater angles of 0°, 30°, 60°, and 90°. The heater strip was placed in a container of the liquid and was heated electrically. Heat transfer results were obtained for plate temperatures ranging from 100 to 800°F. As the …

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Thermal Fatigue Testing Of Die Casting Die Steels, Kulwant Singh Sabharwal Jan 1969

Thermal Fatigue Testing Of Die Casting Die Steels, Kulwant Singh Sabharwal

Masters Theses

"Thermal fatigue is a form of surface failure produced by repeated thermal stresses and is the main cause of die retirement in the die casting industry. A general review of the fundamental and practical aspects of thermal fatigue as encountered in the dies, based on earlier published work, is given and preliminary experiments in an effort to set up a suitable method of testing to study this phenomenon are then described. In the present technique developed to create the thermal conditions experienced by a die steel in aluminum die casting, a small portion of one face of a cylindrical test-piece …

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Static And Dynamic Instability Analysis Of Rigid Frames With Timoshenko Members, Carlton Lee Smith Jan 1969

Static And Dynamic Instability Analysis Of Rigid Frames With Timoshenko Members, Carlton Lee Smith

Masters Theses

"In this thesis, a technique has been developed to determine the natural frequencies of plane rigid frames with the consideration bending, shear deformation, rotatory inertia, and internal axial forces. The internal forces are functions of the instability load of the vibrating system for which the effects of bending and shear deformation on the stability of this structure are considered. For the sake of completeness, the matrix formulations for the dynamic or stability analysis of a rigid frame are given. The stiffness matrices of these formulations are then derived. The influence of shear deformation, rotatory inertia, and internal axial force is …

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A Study Of Different Types Of Connections To Structural-Steel Square Tubings, Chao-Sheng Chen Jan 1969

A Study Of Different Types Of Connections To Structural-Steel Square Tubings, Chao-Sheng Chen

Masters Theses

"Although square tubular element has long been recognized as an ideal structural member, its acceptance was limited by the lack of detailed knowledge on suitable connections related to this geometric shape. It is structurally inefficient to use a strong column poorly connected to a strong beam. So it is necessary to understand, in advance of adoption, the effect and behavior of different types of connections and to develop an efficient structural system. In this study, the ordinary column-to-beam framing with different types of connections has been investigated. The three types of connections are single-plate connection, double-angle connection, and multi-angle connection. …

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Vibration Of An Internally Damped Tapered Truncated Cantilever Beam, Chimanbhai Magandas Patel Jan 1969

Vibration Of An Internally Damped Tapered Truncated Cantilever Beam, Chimanbhai Magandas Patel

Masters Theses

"This thesis provides a vibration analysis of an internally damped, tapered, truncated, cantilever beam. Using two formulations of the problem based on: (1) Discrete mass and (2) continuous mass distribution, solutions are given for a beam having square cross section with linear depth and linear width variation. A Kelvin viscoelastic material for the beam is assumed. The vibration of the beam is considered to produce plane stress in the material, and the stress-strain relationship is applied only to the strain in the plane of bending. An exact solution for frequency of oscillation, mode shape, and steady state response is obtained …

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A Photoelastic Study Of The Stresses Around An Underground Opening And Its Support System, Alphonse C. Van Besien Jan 1969

A Photoelastic Study Of The Stresses Around An Underground Opening And Its Support System, Alphonse C. Van Besien

Masters Theses

"The stress conditions around openings in rock have long been of interest to the field of rock mechanics. The purpose of this investigation was to determine the stress distribution around an opening with a rib and wall-plate support system. A photoelastic model of the opening (a modified horse-shoe section) was loaded in the centrifuge to determine the effect of body loading. Both the tangential stress and the stress within the rock bench, due to the opening, were determined. The stress conditions within the bench were examined using simulated ribs and a loading frame. Application of the data is discussed, as …

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Tunnel Diode Models For Electronic Circuit Analysis Program (Ecap), Carmon Dale Thiems Jan 1969

Tunnel Diode Models For Electronic Circuit Analysis Program (Ecap), Carmon Dale Thiems

Masters Theses

"In this paper ECAP models for the tunnel diode are presented. Results showing the model, the current-voltage charateristics [sic] are discussed. Operation in typical circuits is presented. A summary of the current state of the art in modeling appears in Appendix I. Since ECAP is only structured to accept piecewise-linear models of these devices, that type of model is presented here. All of the models are developed to approximate the typical tunnel diode current-voltage characteristic"--Introduction, page 1.

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A Study On Load Transfer Of Model Friction Piles, Richard Milton Franke Jan 1969

A Study On Load Transfer Of Model Friction Piles, Richard Milton Franke

Masters Theses

"Previous investigations concerned with disturbance of soft clay by driving displacement piles are summarized. The initiation of excess pore water pressures due to pile driving, and mechanisms of load transfer are also described, along with the applicapability of model pile testing in analysis of the various phenomena. Load tests were conducted on assorted sizes of model friction piles embedded in sedimented soil samples with consisted of a silt and clay mixture. Pilot holes of various diameters were cut in the samples. A theoretical load distribution curve was used to calculate the load transferred to the soil as a function of …

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Plastic Analysis Of Beam - Columns, Ning-Cheng Tsao Jan 1969

Plastic Analysis Of Beam - Columns, Ning-Cheng Tsao

Masters Theses

"The results of an analytical study of the inelastic deformation of a wide-flange steel beam-column are presented. Emphasis has been placed on the influence of axial thrust on the pinned-end beam-column subjected to equal end moments with opposite direction. For this type of beam-column behavior, the relationship between the applied moment, axial load, and resultant curvature for the region in the plastic range has been studied in this investigation"--Abstract, page ii.

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Determination Of Distillation Efficiencies For The Water-Methanol-Acetone System, Chorng Shyong Wang Jan 1969

Determination Of Distillation Efficiencies For The Water-Methanol-Acetone System, Chorng Shyong Wang

Masters Theses

"A pilot-scale, eight-plate, bubble-cap distillation tower with a multi-point temperature recorder and automatic sampling device was used to obtain operating data on temperatures and liquid phase compositions for distillation efficiency studies. The tower was run with a single feed, a total condenser, and a partial reboiler. At steady state, as indicated by constant temperatures, samples were taken and later analyzed by gas chromatography. A digital program was developed to calculate component efficiencies on each plate according to Holland's modified Murphree plate efficiency, utilizing the operating data, and reflux rate, the input and output flows and compositions, and vapor-liquid equilibrium data. …

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Investigation Of Free Convection Heat Transfer From An Inclined Flat Plate, Phairojna Sang-Urai Jan 1969

Investigation Of Free Convection Heat Transfer From An Inclined Flat Plate, Phairojna Sang-Urai

Masters Theses

"The experimental investigation was conducted to determine temperature distribution and convective heat transfer coefficients in terms of Nusselt number for an inclined heated flat plate in air. The heated surface of the aluminum flat plate was set facing upward and moved through seven positions from the vertical to the horizontal. The investigation shows that the local Nusselt number can be predicted by Kiekus's solution within 12 per cent for inclination angles from the vertical through 75° from the vertical. In the case of the vertical position, Eckert's solution gives a better prediction. For the horizontal position the results show good …

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A Five-Spot Waterflood Process As Applied To The Digital Computer Based On The Prats Technique, Leonard Koederitz Jan 1969

A Five-Spot Waterflood Process As Applied To The Digital Computer Based On The Prats Technique, Leonard Koederitz

Masters Theses

"The technique for the prediction of injection rates and production history of a five-spot secondary recovery field pattern as presented by Prats has been significantly modified to permit rapid and accurate digital applications eliminating the heretofore prohibitive reliance upon electrolytic model results for intermediate data values following water front breakthrough"--Abstract, page i.

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Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys Jan 1969

Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys

Masters Theses

"A three-phase, one-dimensional radially layered reservoir simulator is programmed for a large memory digital computer. It is designed to provide a practical solution to the problem of determining optimum soak time during an intermittent steam injection process. The general approach is to (1) develop a representative mathematical model which describes the reservoir; and (2) employ a suitable numerical technique to solve the system of equations which comprises this model. The reservoir consists of concentric cylinders around the wellbore, a pay-zone stratified into thermally connected layers limited on the top and on the bottom by an impermeable cap and base rock, …

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A Study Of The Correlation Potential Of The Optimum Moisture Content, Maximum Dry Density, And Consolidated Drained Shear Strength Of Plastic Fine-Grained Soils With Index Properties, Marvin Tartt Harris Jan 1969

A Study Of The Correlation Potential Of The Optimum Moisture Content, Maximum Dry Density, And Consolidated Drained Shear Strength Of Plastic Fine-Grained Soils With Index Properties, Marvin Tartt Harris

Masters Theses

"The correlation potential of the compaction properties and the consolidated drained shear strength parameters of plastic fine-grained soils with index properties was investigated in this study. The interrelationships of these properties were derived through graphical and multilinear regression analysis. The compaction properties, optimum moisture content, and maximum dry density were found to be related to many of the index properties. The most important relationships were with the plasticity indices and the percentage of particles smaller than two microns; the highest degree of simple correlation was achieved with the liquid limit. The consolidated drained shear parameters, cohesion, and the angle of …

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Mutually Dependent Heat And Mass Transfer In Laminar Duct Flow, E. M. Sparrow, T. S. Chen Jan 1969

Mutually Dependent Heat And Mass Transfer In Laminar Duct Flow, E. M. Sparrow, T. S. Chen

Mechanical and Aerospace Engineering Faculty Research & Creative Works

An analysis is performed of the strongly coupled heat and mass transfer processes which result from sublimation of mass from the walls of a duct into a flowing gas, the latent heat being provided solely by convective transfer from the gas. The flow is assumed to be laminar and hydrodynamically developed. Results are given for the stream ward variations of the bulk and wall temperatures and mass fractions, of the heat and mass transfer rates, and of the local heat transfer coefficient. Representative temperature and mass fraction profiles are also presented. Entrance lengths characterizing the near approach to fully developed …

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Apparatus And Techniques For The Plane Wave Analysis Of Acoustic Filters, Victor Hugo Simon Jan 1969

Apparatus And Techniques For The Plane Wave Analysis Of Acoustic Filters, Victor Hugo Simon

Masters Theses

"This thesis describes a method for determining the reflection and transmission characteristics of acoustic filters under static (i.e. no flow) conditions. These characteristics are obtained by the combination of linear plane wave acoustic theory with a sequential experimental procedure. The experimental data necessary for the calculation of the reflection characteristics were obtained from measurements made on the inlet side of the filter with a standing wave tube apparatus. In order to calculate the transmission characteristics of the filter, the standing wave measurements were augmented with measurements taken on both the inlet and outlet side of the filter. This was accomplished …

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Inventory Of Indiana County Bridges, Jean E. Hittle Jan 1969

Inventory Of Indiana County Bridges, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

The purpose of this report is to bring county bridge needs into focus-state-wide and county-by-county-through a detailed computerized inventory listing of all existing county bridges. Each county's inventory listing has been further summarized as to the number of bridges by length and width categories, along with an estimated replacement cost. This inventory report thus gives a measure and dimension to the county bridge problem. Hopefully this information will assist local road officials, legislative study groups, and members of the General Assembly in weighing alternate solutions to the financing of county bridge programs.

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An Optimization Approach To Well Spacing For Gas Storage Reservoirs, Jagannath Rao Ghole Jan 1969

An Optimization Approach To Well Spacing For Gas Storage Reservoirs, Jagannath Rao Ghole

Doctoral Dissertations

"A finite approximation to the conventional diffusivity equation describing compressible fluid flow through porous media has been developed with a view to apply it to the problems of optimum well spacing. An equilateral grid system has been employed to enable uniform well spacing for any number of wells. A numerical model has been developed on an IBM 360 - Model 50 computer, which simulates the pressure and saturation transience in the reservoir due to production impulses. This model has been used to maximize with respect to number of wells, the minimum well bore pressure reached throughout the specified withdrawal schedule. …

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Dynamic Response Of A Gyrocompass, Subhash Govind Kelkar Jan 1969

Dynamic Response Of A Gyrocompass, Subhash Govind Kelkar

Masters Theses

"A gyrocompass with three degrees of freedom is studied and an attempt made to solve the exact equations of motion numerically. The equations are obtained by using the Lagrange formulation of the problem. The kinetic energy and the potential energy of the system are determined from the energies of the various components. These are then substituted into Lagrange's equation to obtain the three equations of motion for the three angular coordinates. As few restrictive assumptions as possible are made during this development. From these exact equations of motion an approximate analytical solution is obtained by making several assumptions and then …

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