Engineering Commons^™

A Computer Model For Comparison Of Flat Plate And Focusing Collectors For Solar Air Conditioning, H. B. Bucher

Retrospective Theses and Dissertations

Two types of solar collecting systems are frequently employed--flat plate collectors with spectrally selective windows which trap sunlight with the "greenhouse effect" and focusing systems with curved mirrors which concentrate the sun's rays on an absorbing surface. The flat plate collector is the simpler of the two designs, but cannot readily provide temperatures as high as the focusing collector. Both of the collectors are candidates for absorption cycle solar air conditioning systems. This role dictates higher temperature than are normally required of solar collectors, particularly the flat plate design. Focusing systems of interest here are those which are fixed in …

Characteristics Of Bicycle-Related, Motor Vehicle Accidents In Kentucky, Kenneth R. Agent, Charles V. Zegeer

Kentucky Transportation Center Research Report

The purpose of this study was to determine the characteristics associated with bicycle-related, motor vehicle accidents. Bicycle-related, motor vehicle accidents in Kentucky were analyzed.

A sample of injury-producing bicycle accidents was also analyzed. It was found that cyclists 10 to 14 years of age were involved in the largest number of motor vehicle related accidents. Males were involved in four times as many accidents as females. Most accidents occurred in urban areas, mostly on residential streets. The majority of accidents resulted from errors by the cyclists. The most common type was the right-angle accident, but the leading types varied with …

New Directions In Western Water Law Proceedings Of The Sixth Annual Conference Of The Utah Section Of The American Water Resources Assoc., Utah Water Research Laboratory

Reports

No abstract provided.

Seasonal Variations In The Skid Resistance Of Pavements In Kentucky, James L. Burchett

Kentucky Transportation Center Research Report

Frequent measurements of skid resistance were made on 20 pavements in common use in Kentucky. Tests were conducted from November 1969 through 1973. Principal analysis involved relating changes in skid resistance to day of the year and relating skid resistance to temperature at the time of test, to average antecedent temperatures, and to average rainfall.

Seasonal variations exhibited an annual, sinusoidal cycle. The changes in sand-asphalt and bituminous concrete under higher volumes of traffic were about 12 skid numbers. The changes in portland cement concrete and bituminous concrete under lower volumes of traffic were about 5 skid numbers. The lowest …

An Investigation Into A Least Squares Method For Image Registration, Ernest William Cordon

Retrospective Theses and Dissertations

One of the problems associated with the automatic image processing of satellite photographs such as weather maps is the need for image registration; that is, the fitting of a map that has some translational and rotational bias to a known data base. This paper investigates a least square method of image registration using an image that has been converted into a boundary map with a pixel representation 1 for land, -1 for water and zero for cloud pixels. A sampled correlation array is constructed by shifting the weather map to locations on a given grid, centered around a sampled correlation …

A Case Study Of A Solar Augmented Heating System Versus A Solar Assisted Heat Pump, Louis P. Braleski

Retrospective Theses and Dissertations

The usage and applications of solar energy are numerous; however, it's still in its infancy. The subject matter discusses two applications of solar energy, a "Solar Augmented Heated System" and a "Solar Assisted Heat Pump." The solar augmented system and the solar assisted system have the same components; however, the way they are used is of primary concern. A solar system in parallel with a heat pump is called "Solar Augmented Heating System" or in series with a heat pump is a "Solar Assisted Heat Pump." A 2000 ft2 house was utilized as the basis of the design. The heating …

Inviscid Two-Dimensional Vortex-Panel Method For Calculating The Pressure Distribution Over Noncircular Cylinders At Various Flow Incidence Angles, Sophia Kokkinos Ashley

Mechanical & Aerospace Engineering Theses & Dissertations

A method. has been implemented to calculate the potential flow pressure distribution over noncircular cylinders at various flow incidence angles. The inviscid, solution has been obtained by replacing the surface of a noncircular cylinder with a vortex sheet. The surface has been approximated by a number of flat panels. Each vortex panel has been assumed to have a constant vorticity, and the condition of no-circulation applied.. Solutions yield the local tangential velocity and pressure coefficient at each point.

The accuracy of the method has 'been established through comparison of the predicted results with existing exact theoretical results.

Comparisons of the …

An Experimental Investigation Of A Turbulent Boundary Layer With Suction Through Closely Spaced Streamwise Slots, Stephen P. Wilkinson

Mechanical & Aerospace Engineering Theses & Dissertations

The object of this research was to experimentally evaluate a suction surface for use with incompressible turbulent boundary layers. The surface consisted of an array of closely spaced slots aligned in the direction of the free stream flow. Direct drag and mean boundary layer velocity profile measurements showed that the slotted surface had nominally the same suction characteristics as the porous surface.

Wells And Ponds: Water Quality And Supply, Elbert C. Dickey, W.D. Lembke

Department of Agricultural and Biological Systems Engineering: Faculty Publications

FARM WELLS IN WASHINGTON COUNTY ...................... 1

Study Area Description ................................. 4

Field and laboratory Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Soil and Groundwater Measurements ...................... 10

Well Water Measurements ............................... 15

Summary ............................................ 17

PONDS IN WASHINGTON AND POPE COUNTIES ................. 17

Ponds in Washington County ............................ 17

Ponds and a Lake in Pope County ......................... 25

Summary ............................................ 30

Bibliography ............................................. 31

Appendix ............................................... 34

This bulletin is one of six publications growing out of a four-and …

Design, Calibration, And Application Of A Sensor For Measuring Time Dependent Angle Of Attack Of Helicopter Blades, Weiyuan Henry Liu

Mechanical & Aerospace Engineering Theses & Dissertations

Various pressure probes were designed and tested which could be attached to helicopter blades when a helicopter is in flight. The pressure probes consisted of spherical heads which were held in place by cylindrical shanks. Built inside the heads were transducers to measure the pressure differential between pressure ports which were located on the front portion of the spherical head facing the airstream. Data was obtained over a range of airstream velocity of 11,6 to 88.4- m/s (38 to 290 ft/sec), corresponding to Reynolds numbers of 0.24 to 1.84x10⁵ based on the sphere diameter. Both static and dynamic tests …

The Fracture Toughness Of Steel-Aluminum Deformation Welds, Charles Ellis Albright Jr

Chemical and Biological Engineering ETDs

A study of the fracture toughness (in this case, Gic) of steel-aluminum deformation welds using a specially developed double cantilever beam fracture toughness specimen is presented. Welds made at 350C were heat treated at 360, 380, 400, 420 and 440 C.

An intermetallic reaction product layer of Fe2Al5 is formed at the steel-aluminum interface with increasing heat treating temperature and time by a process of nucleation and growth of discrete particles. A transition in toughness from a higher average Gic value (6097 N/m) to a very low average Gic value (525 N/m) is observed. The decrease in toughness is accomplished …

Improvement To The Solution Of Stefan-Like Freezing And Melting Problems, With Application To Lmfbr Safety Analysis, Mohamed Shafik El-Genk

Nuclear Engineering ETDs

This work involves development of improvements to two analytical methods to predict the instantaneous position of the moving phase-change front in one-dimensional Stefan-like problems. These techniques, the refined integral heat balance and the upper and lower bounds averaging methods, are useful in practical applications for reactor safety analysis, under hypothesized conditions leading to molten fuel relocation problems. With such applications in mind, the two methods are applied to four different one-dimensional problems which involve change-of­phase, with or without a convective boundary condition at the moving front. Comparison with the exact solution has been presented whenever possible; ultimately, all solutions have …

A Review Of Manpower Training And Future Directions In Air Pollution Control At Universities, August T. Rossano, Harold M. Cota

Civil and Environmental Engineering

No abstract provided.

Acuta Enews June 1978, Vol. 7, No. 6

ACUTA Newsletters

In This Issue

EXECUTIVE VICE PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECES

NOMINATING COMMITTEE REPORT

MORE BITS & PIECES

DATA BITS

MOUTH OF THE SOUTH

VIRGINIA VIEW

POTPOURRI

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected Primarily To Shear Stress, Wei-Wen Yu, Roger A. Laboube

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on the unreinforced beam webs subjected primarily to shear stress. The results obtained from the study of beam …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To Web Crippling And A Combination Of Web Crippling And Bending, Wei-Wen Yu, Nipon Hetrakul

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on web crippling and combined web crippling and bending for cold-formed steel beams having unreinforced webs. The results …

Webs For Cold-Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To Bending Stress, Wei-Wen Yu, Roger A. Laboube

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on unreinforced beam webs subjected to bending stress. The results for the study of beam webs subjected to …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Beam Webs Subjected To A Combination Of Bending And Shear, Roger A. Laboube, Wei-Wen Yu

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on the unreinforced beam webs subjected to a combination of bending and shear. The results obtained from the …

Fatigue Experiments On Composite Slab Floors, George Abdel-Sayed, M. C. Temple

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Contents And Preface -- Volume Ii, Wei-Wen Yu, Joseph H. Senne

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Aisi's Cold-Formed Steel Design Specification, Albert L. Johnson

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Load And Resistance Factor Design Of Cold-Formed Steel Structural Members, Trinh-Ngoc Rang, Theodore V. Galambos, Wei-Wen Yu, M. K. Ravindra

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Local Buckling Of Cold Formed Steel Members, Venkatakrishnan Kalyanaraman

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Applicability Of Limit Design To Cold Formed Box Beams, Paul H. Sanders, Jerry Householder

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Maximum Load Design Of Cold Formed Steel Shapes, A. Hasegawa, Niels C. Lind, W. Brent Hall

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Tests On A Continuous Purlin Roofing System, J. Rhodes, William King, Keith James, James M. Harvey

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Local Buckling Of Thin Walled Channels, J. Roorda, K. R. Venkataramaiah

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Local Buckling Tests On Three Steel Large-Diameter Tubular Columns, A. Ostapenko, S. X. Gunzelman

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Stability Analysis Of Locally Buckled Frames, Shien T. Wang, George E. Blandford

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

Dynamic Response Of Infilled Multistorey Steel Frames, Craig J. Miller, Abo-Elkhier Serag

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.