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Articles 187381 - 187410 of 193444
Full-Text Articles in Engineering
Finite Difference Solutions To Free Jet And Confined Cavity Flows Past Disks With Preliminary Analyses Of The Results, Roland W. Jeppson
Finite Difference Solutions To Free Jet And Confined Cavity Flows Past Disks With Preliminary Analyses Of The Results, Roland W. Jeppson
Reports
A number of solutions are obtained to ideal axisymmetric flow past cavitating disks for both cases of a free surface jet and flow confined in a constant radius conduit. Finite difference methods are utilized in obtaining the solutions from an inverse formulation which considers the velocity potential, and Stokes’ stream function, as the independent variables and the radial and axial dimensions, r and z, as the dependent variables. The resulting inverse boundary value problem for r, for which the basis solution is obtained, is nonlinear. The solution technique uses a Newton-Raphson iteration to evaluate the implicit finite difference operator at …
State Organizational Patterns For Comprehensive Planning Of Water Resources Development, Daniel H. Hoggan
State Organizational Patterns For Comprehensive Planning Of Water Resources Development, Daniel H. Hoggan
Reports
No abstract provided.
Formulation Of A Mathematical Model For The Allocation Of Colorado River Waters In Utah, Rick L. Gold, James H. Milligan, Calvin G. Clyde
Formulation Of A Mathematical Model For The Allocation Of Colorado River Waters In Utah, Rick L. Gold, James H. Milligan, Calvin G. Clyde
Reports
A Mathematical model for the allocation of Utah’s water resources is formulated in the linear programming format. The availability of water from various sources is considered with the demands for water in each of the nine hydrologic study areas of Utah. The applications of mathematical models of this type are studied and the merits of the linear programming approach are discussed.
Electronic Analog Computer Simulation Of The Paez-Pedraza Region Of Venezuela, J. Paul Riley, V. V. Dhruva Narayana, Kousoum S. Sakhan
Electronic Analog Computer Simulation Of The Paez-Pedraza Region Of Venezuela, J. Paul Riley, V. V. Dhruva Narayana, Kousoum S. Sakhan
Reports
Recently governments and universities in many South American countries have shown considerable interest in a planned and orderly development of available water resources. A case in point is the preliminary study reported in which the problem is approached by utilizing a general mathematical model of the hydrologic system. Specifically, the study involves simulation by means of an electronic analog computer of the hydrology of the Paez-Pedraza region of south western Venezuela. The various processes within the model are linked by the continuity-of-mass principle, which requires a hydrologic balance at all points. The analog computer is ideally suited to the solution …
Snowmelt Simulation, J. Paul Riley, Duane G. Chadwick, Keith O. Eggleston
Snowmelt Simulation, J. Paul Riley, Duane G. Chadwick, Keith O. Eggleston
Reports
The rapid growth in recent years of a variety of demands upon available water resources has lead to an increasing interest in more fundamental approaches to the science of hydrology. Accompanying this growth has been a need for an increased understanding of the snowmelt process. A completely adequate description of the entire physical process of snowmelt under all conditions is not yet available. The complex interrelated and variable nature of the snowmelt processes that occur simultaneously complicate the problem. A preliminary mathematical model of the snowmelt process has been developed in which processes such as pack settlement rates and energy …
Simulation Of The Hydrologic-Economic Flow System In An Agricultural Area, Murland R. Packer, J. Paul Riley, Harold H. Hiskey, Eugene K. Israelsen
Simulation Of The Hydrologic-Economic Flow System In An Agricultural Area, Murland R. Packer, J. Paul Riley, Harold H. Hiskey, Eugene K. Israelsen
Reports
Like the allocation of water resources among water users, the distribution of allocated water to the subusers requires an estimate of the economic costs and benefits from a number of distribution alternatives. The most satisfactory solution maximizes the benefit cost ratio. This study is based on the premise that equitable water distribution to agricultural subusers can be more easily accomplished through the use of a technique to predict the marginal value of agricultural water. A hydro-economic model is formulated to distribute the water supply to the crops and to determine the unit value of water for the given supply. By …
Analog Computer Simulation Of The Runoff Characteristics Of An Urban Watershed, V. V. Dhruva Narayana, J. Paul Riley, Eugene K. Israelsen
Analog Computer Simulation Of The Runoff Characteristics Of An Urban Watershed, V. V. Dhruva Narayana, J. Paul Riley, Eugene K. Israelsen
Reports
In the syntheses of hydrograph characteristics of small urban watersheds, the distribution of water among the various phases of the runoff process is attempted by the concept of equivalent rural watershed. The urban parameters considered in the study are percentage impervious cover and characteristic impervious length factor. A mathematical model is developed for the equivalent rural watershed with precipitation as input. The hydrograph of outflow is obtained by chronologically deducting the losses due to interception, infiltration, and depression storages from precipitation and then routing through the watershed storage. This mathematical procedure is programmed on an analog computer and is tested …
Urgent Building Needs, Utah Water Research Laboratory
Optimum Operation Of Desalting Plants As A Supplemental Source Of Safe Yield, Calvin G. Clyde, Wesley H. Blood
Optimum Operation Of Desalting Plants As A Supplemental Source Of Safe Yield, Calvin G. Clyde, Wesley H. Blood
Reports
No abstract provided.
Telemetry System Modifications And 1968-69 Operation, Duane G. Chadwick
Telemetry System Modifications And 1968-69 Operation, Duane G. Chadwick
Reports
A discussion of telemetering system modifications is given, and discussion is presented of system operations for the 1968-69 snow season. A telemetering error analysis has been made for an operational period in February. A log is presented giving station operation periods, and a general summary of operational costs for the 1968-69 operational year is summarized.
A Perspective Of Contemporary Water Planning And Management Problems In Utah, Jay M. Bagley
A Perspective Of Contemporary Water Planning And Management Problems In Utah, Jay M. Bagley
Reports
I should like to discuss what I consider to be a few major problems Utah faces in connection with water and its development. Time will not permit great detail or breadth of discussion. The points I should like to discuss best can be made by first setting some hydrologic scenery. Actually, although hydrologic considerations provide the central melody to planning for water resources development, there are many socio-politico-legal-economic variations on the theme. My approach will be to remark briefly on thie environment in which today's planning must take place, provide some broad hydrologi guideposts, and with this backdrop select a …
Analog Computer Solution Of The Unsteady Flow Equations And Its Use In Modeling The Surface Runoff Process, Utah Water Research Laboratory
Analog Computer Solution Of The Unsteady Flow Equations And Its Use In Modeling The Surface Runoff Process, Utah Water Research Laboratory
Reports
The flow of water on a watershed is usually unsteady and spatially varied, but can be adequately portrayed by the equations of momentum and continuity, commonly referred to as the unsteady flow equations. Because these equations are quasi-linear, hyperbolic, partial differential equations, they are not easily amenable to solution. Analog computer model~ of surface runoff generally have been based on simplified forms of these equations. As an improvement of those models, an analog computer solution is presented here for the unsteady flow equations. The solution involves the conversion of the partial differential equations in to a differential-difference system, and a …
The Effect Of Sediment Properties Of An Ultrasonic Plane Wave, G. H. Flammer, N. E. Stauffer Jr., E. Y. Liu
The Effect Of Sediment Properties Of An Ultrasonic Plane Wave, G. H. Flammer, N. E. Stauffer Jr., E. Y. Liu
Reports
No abstract provided.
Abstracts Of The Papers Presented At The Asce Hydraulics Division 17th Annual Specialty Conference, J. J. Leendertse, Robert P. Shubinski, E. L. Bourodimos, Calvin G. Clyde, Harl E. Judd, Dean F. Peterson, Roland W. Jeppson, James H. Milligan
Abstracts Of The Papers Presented At The Asce Hydraulics Division 17th Annual Specialty Conference, J. J. Leendertse, Robert P. Shubinski, E. L. Bourodimos, Calvin G. Clyde, Harl E. Judd, Dean F. Peterson, Roland W. Jeppson, James H. Milligan
Reports
No abstract provided.
Flexible Pavement Design Criterion, James H. Havens
Flexible Pavement Design Criterion, James H. Havens
Kentucky Transportation Center Research Report
Our recent report on "Rational Analysis of Kentucky Flexible Pavement Criterion," November 1968, presented theoretical treatments of current design curves – which enabled transformation of the current curves into companion sets of curves embodying alternative proportions of bituminous concrete and dense-graded aggregate base. We are privileged now to submit additional analytical information and to offer recommendations for revising the present design criterion.
Direct Measurement Of Dynamic Capacitance, Norman G. Dillman
Direct Measurement Of Dynamic Capacitance, Norman G. Dillman
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Developments In Concrete Pavement Construction, Dan C. Woodward
Developments In Concrete Pavement Construction, Dan C. Woodward
Kentucky's Annual Forum on Transportation
No abstract provided.
The National Bridge Inspection Program, W. Jack Wilkes
The National Bridge Inspection Program, W. Jack Wilkes
Kentucky's Annual Forum on Transportation
No abstract provided.
State Bridge Program, T. J. Hopgood
State Bridge Program, T. J. Hopgood
Kentucky's Annual Forum on Transportation
No abstract provided.
Bridge Modernization Program - Logan County, Henry A. Padgett Jr.
Bridge Modernization Program - Logan County, Henry A. Padgett Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
Hot Mix Sand Surface, James H. Havens
Hot Mix Sand Surface, James H. Havens
Kentucky's Annual Forum on Transportation
No abstract provided.
The Relationship Between The Development Of Highways And Water Resources Management, G. F. Hughes Jr.
The Relationship Between The Development Of Highways And Water Resources Management, G. F. Hughes Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
Impact Of Highway Construction On Water Resource Management, Joe Tucker
Impact Of Highway Construction On Water Resource Management, Joe Tucker
Kentucky's Annual Forum on Transportation
No abstract provided.
Joint Development And Design Team Concept, F. L. Anthony
Joint Development And Design Team Concept, F. L. Anthony
Kentucky's Annual Forum on Transportation
No abstract provided.
The Architecture Of Bridges, Arnold H. Vollmer
The Architecture Of Bridges, Arnold H. Vollmer
Kentucky's Annual Forum on Transportation
No abstract provided.
New Developments In Joint Sealing Practice For Longer Spans, Stewart C. Watson
New Developments In Joint Sealing Practice For Longer Spans, Stewart C. Watson
Kentucky's Annual Forum on Transportation
No abstract provided.
Manual Of Uniform Traffic Control Devices And Problems In Traffic Control Agreements, Grover C. Ethington Jr.
Manual Of Uniform Traffic Control Devices And Problems In Traffic Control Agreements, Grover C. Ethington Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
State Road Systems And Maintenance Responsibility, John W. Spurrier
State Road Systems And Maintenance Responsibility, John W. Spurrier
Kentucky's Annual Forum on Transportation
No abstract provided.
Rural Secondary And County Road Aid Programs, John D. Witt
Rural Secondary And County Road Aid Programs, John D. Witt
Kentucky's Annual Forum on Transportation
No abstract provided.
Kentucky Highway Program, W. B. Hazelrigg
Kentucky Highway Program, W. B. Hazelrigg
Kentucky's Annual Forum on Transportation
No abstract provided.