Engineering Commons^™

Film Boiling Destabilization From Hydrodynamic And Thermodynamic Considerations, Fred Samuel Gunnerson

Nuclear Engineering ETDs

An analytical method is presented for predicting, from first principles, the minimum heater temperature and heat transfer rate at the onset of film boiling for spherical and ·flat plate heaters in saturated and subcooled liquids. Within the analysis, consideration is given to the two types of film boiling, they are:

(1) Pool film boiling where the entire heater is submerged within the boiling liquid, and

(2) Leidenfrost film boiling where a droplet of liquid boil s above a horizontal plate heater.

Test 1299: Ford Tw-30 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1301: Ford Tw-10 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1300: Ford Tw-20 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1298: Long 360 Diesel 6 And 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

The University, Electrical Engineering And Space Travel, Doran Baker

Faculty Honor Lectures

In this paper, my purpose is three-fold: First, to tell some of the story of the development of the Engineering College at Utah State University; second, to present selected concepts and applications in the evolution of electrical engineering; third, to relate these concepts and developments to our space venture and to the twenty-first century_ My perspective is that of a school teacher, engineer, scientist and historian; superimposed upon this is my imbedment in the system as an administrator of teachers and researchers. I intend to strike a balance between generality and depth, between technology and philosophy, and between perception and …

Acuta Enews April 1979, Vol. 8, No. 4

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECES

POTPOURRI

VIRGINIA VIEW

MOUTH OF THE SOUTH

Acuta Enews March 1979, Vol. 8, No. 3

ACUTA Newsletters

PRESIDENT'S MESSAGE

PARTY LINE

POTPOURRI

MOUTH OF THE SOUTH VIRGINIA VIEW

BITS & PIECES

Bulletin - March, 1979, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A six page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.

Interstate Safety Improvement Program, Jerry G. Pigman, Kenneth R. Agent, Charles V. Zegeer

Kentucky Transportation Center Research Report

A previous report dealt with development of procedures for preparation of an Interstate Safety Improvement Program. The purpose of this report was to prepare prioritized rankings of recommended improvements which could be implemented for the Interstate Safety Improvement Program. Together, these two reports include logical and comprehensive procedures for the selection, scheduling, construction, and evaluation of highway safety improvement projects.

Considerable detail is presented which documents analysis procedures used to determine sites, sections, and elements of the roadway in need of improvement. The average number of accidents per interchange, bridge, 1.0-mile (1.6-km) section, and 0.3-mile (0.48-km) spots were summarized for …

Beam Deflection In A Pulsed Chemical Laser Amplifier, J. Munch, Lee W. Casperson, E. C. Rea

Electrical and Computer Engineering Faculty Publications and Presentations

Analyses and experiments have been performed to investigate deflection of a Gaussian beam propagating through an amplifying medium possessing a strong transverse gain gradient. The analysis includes effects due to dispersion and gain steering. The experiments were performed in a high power pulsed chemical laser amplifier using a cw frequency stabilized laser as a source. Time dependent beam deflection due to the interaction of the gain gradient with the finite radius of curvature of the propagating beam was observed.

Reflection Of An Electromagnetic Plane Wave With 0 Or Π Phase Shift At The Surface Of An Absorbing Medium, R. M.A. Azzam

Electrical Engineering Faculty Publications

An electromagnetic plane wave incident obliquely from a transparent medium onto the surface of an absorbing medium can be reflected with 0 or π phase shift if (i) the wave is p (TM) polarized, and (ii) the complex relative dielectric function ε is such that 0 ≤|ε| ²/2Re(ε) ≤ 1. Furthermore, the locus of ε such that the reflection coefficient for the p polarization is real at the same angle of incidence, is a circle, and that of ε^½ (the complex relative refractive index) is Bernoulli’s lemniscate.

Use Of Economic Analyses And Dynamic Programming In The Selection Of Projects For Resurfacing, Charles V. Zegeer, Kenneth R. Agent, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

The objective of this study was to develop a dynamic programming procedure using economic analyses to assist in optimizing expenditures in the pavement resurfacing program in Kentucky. Benefit relationships were determined from expected accident reduction, improved comfort, time savings, fuel savings, and maintenance savings. The only cost input to the program was the resurfacing cost of each project.

Dynamic programming was adapted to the selection of projects for resurfacing. Over $8.4 million of additional user benefits would have been realized in 1976 if dynamic programming had been used in selecting projects. The benefit-cost ratio of sections selected for resurfacing was …

Irish H & V News

Building Services Engineering

No abstract provided.

Lake Mead And Lake Powell Salinity Reports, Cathy Lee, Steve Gazafy

Publications (WR)

The enclosed reports were compiled for the Colorado River Water Quality Office based on salinity data for Lake Mead and Lake Powell. According to the regional director of the office, the reports are not considered "polished" documents for public distribution. However, he considers them to be "interesting, rough appraisals of general trends that may be very important In our understanding the hydro-salinity system in the Colorado River."

Scattering Of Focused Beams By Tenuous Particles, S. Colak, Cavour W. Yeh, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

This paper deals with the problem of the scattering of focused laser beams by tenuous particles using an iterative technique. The results are shown to be accurate provided that (a) the polarizability of the particle medium is small and (b) the phase shift of the central ray is less than 2. It was found that when the size of the incident beam waist is close to that of the scatterer, the scattered field deviates significantly from that for the incident plane wave case. Specific examples are given.

Ground Driven Power Tillage Device, Daniel E. Hammett, Edward M. Smith

Biosystems and Agricultural Engineering Faculty Patents

A power tillage device is provided having a passive rolling coulter as the prime mover for a power tillage blade which is carried in the lead of the coulter on a transfer case mounted as a radius arm on the counter shaft. The tillage blade rotates in the opposite direction from the coulter and is designed for optimum efficiency for shearing and lifting soil from a furrow.

The Variations Of Charpy V-Notch Impact Test Properties In Steel Plates, Aisi Technical Committee On Plates And Shapes

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

A survey of the variation to be expected in Charpy V-Notch tests obtained from plates was conducted by the Committee on Product Standards at the request of the Committee on General Metallurgy. The results of the survey are presented in this report.

The survey data consisted of longitudinal and transverse impact test values obtained from seven specified locations on plates produced to ASTM A-572 as-rolled, A-516 normalized and A-537 quenched and tempered. Three testing temperatures were used for each grade.

The data were collected from industry production during 1973 and 1974. Sufficient data were received to estimate limits of variation …

Welding Of Sheet Steel, Teoman Peköz, William Mcguire

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Acuta Enews January & February 1979, Vol. 8, No. 1 & 2

ACUTA Newsletters

In This Issue

PARTY LINE

BITS & PIECES

MOUTH OF THE SOUTH

POTPOURRI

STEAM TUNNELS & TELEPHONE CABLES

VIRGINIA VIEW

Structural Stability Research Council: Proceedings 1979, Structural Stability Research Council

CCFSS Library (1939 - present)

One of the purposes of the Council is to maintain a forum where problems related to the design and behavior of columns and other compression elements in metal structures can be presented for evaluation and discussion. The Annual Technical Session provides an opportunity to carry out this function. The 1979 Annual Technical Session was held on April 24 and 25 at The William Penn Hotel in Pittsburgh, Pennsylvania. Eighty-five persons attended the Session and twenty-seven papers were delivered. A panel discussion on "Stability of Space Frame Structures" was held in the evening of April 24, 1979. The panelists were R. …

Load And Resistance Factor Design Of Cold-Formed Steel Study Of Design Formats And Safety Index Combined With Calibration Of The Aisi Formulas For Cold Work And Effective Design Width, Trinh-Ngoc Rang, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

INTRODUCTION In the design of steel buildings, the "Allowable Stress Criteria" have long been used for the design of cold-formed steel structural members in the United States (1), Canada (2) and other countries (3). Even though the theoretical concepts of risk and reliability analyses have been available for some time (8-10) and the slgnlflcance of such concepts in structural safety and design is well recognized, the probabilistic method has not been explicitly adopted as a basis for the American design standard for steel structures. In view of the fact that the mathematical theory of probability, which has been so successfully …

Load And Resistance Factor Design Of Cold Formed Steel-Calibrations Of The Design Provisions On Laterally Unbraced Beams And Beam-Columns, Wei-Wen Yu, Trinh-Ngoc Rang, Theodore V. Galambos

CCFSS Library (1939 - present)

No abstract provided.

Load And Resistance Factor Design Of Cold Formed Steel-Calibration Of The Design Provisions On Connections And Axially Loaded Compression Members, Wei-Wen Yu, Trinh-Ngoc Rang, Theodore V. Galambos

CCFSS Library (1939 - present)

No abstract provided.

Load And Resistance Factor Design Of Cold-Formed Steel Statistical Analysis Of Mechanical Properties And Thickness Of Materials Combined With Calibrations Of The Aisi Design Provisions Of Unstiffened Compression Elements And Connections, Trinh-Ngoc Rang, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

INTRODUCTION This report presents the progress made on the development of the load and resistance factor design of cold-formed steel following the preparation of the First Progress Report. In Article 11.1, the statistical analyses of the tested values versus the specified values on mechanical properties and thicknesses of the steel sheets and strip are discussed. More than 4,000 tensile coupon tests on mechanical properties and 1,400 data on thickness of steel sheets have been collected and analyzed. For the purpose of formulating the procedures to be used for calibration of various provisions of the AISI Specification, the required formulas are …

Flat Plate Solar Collector Materials (And Designs With An Economic Methodology For Optimizing Collector Design), Michael L. Day '79, Donald S. Remer, Daniel Hyatt '82

All HMC Faculty Publications and Research

The desirability of specific materials and designs for conventional flat-plate solar collector components is considered. Then a methodology for choosing the most economic component is presented, consisting of a computer simulation and a rate-of-return analysis. The effect of rising conventional fuel costs is examined. Examples of using the methodology are given, based on Southern California climatic and user-demand conditions. Selective absorber-plate coatings and film inner glazing are shown to be economic, yielding a rate-of-return of 23 percent and 29 percent, respectively.

Impact Of Water And Soils Having High Source-Sink Potentials On Water And Salinity Management Under Irrigation In The Upper Colorado River Basin, Lyman S. Willardson, R. J. Hanks, J. J. Jurinak

Reports

Water management in irrigation projects is one potential method for reducing downstream salinity in the Colorado River. An important contribution can be made to developing more effective irrigation water management practices for water conservation and salinity control through identification and better understanding of the soil and water interactions that result in soils behaving as salt sources or as salt sinks. The interactions identified in this study were examined to determine the effects of various management alternatives on the quality and quantity of salt in subsurface return flow from irrigation projects. A soil solution chemistry model was developed to describe the …

Cadmium In Forest Ecosystems Around Lead Smelters In Missouri, Nord L. Gale, Bobby G. Wixson

Biological Sciences Faculty Research & Creative Works

The development of Missouri's new lead belt within the past decade has provided an excellent opportunity to study the dissemination and effects of heavy metals in a deciduous forest ecosystem. Primary lead smelters, within the new lead belt have been identified as potential sources of cadmium as well as lead, zinc, and copper. Sintering and blast furnace operations tend to produce significant quantities of small particulates highly enriched in cadmium and other heavy metals. At one smelter, samples of stack particulate emissions indicate that as much as 0.21 lb of cadmium may be released to the atmosphere per hour. This …

Update Of National And State Programs Presently Underway To Curb Point And Nonpoint Sources Of Water Pollution From Animal Production Facilities, Donald F. Smith

United States Environmental Protection Agency: Publications

P.L. 92--500, The Federal Water Pollution Control Act Amendments of 1972, has provided two mechanisms for the control of water pollution from animal production facilities. Point source controls require that confined animal production facilities apply for a NPDES permit in order to operate. Nonpoint source controls, as established by State and area-wide water quality management programs, are to be developed around the concept of "Best Management Practices."

Service And Spare Parts, D Hosken

Journal of the Department of Agriculture, Western Australia, Series 4

Service is the preparation, delivery and after-sales maintenance of machinery. It involves responsibilities for both the dealer and the purchaser.