Browsing Dwight Look College of Engineering by Title
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Singh, Vijay P.; Ram, Rama S. (American Geophysical Union, December 1983)[more][less]
Abstract: A kinematic model for surface irrigation is verified by experimental data obtained for 31 borders. These borders are of varied characteristics. Calculated values of advance times, water surface profiles when water reaches the end of the border, and recession times are compared with their observations. The prediction error in most cases remains below 20% for the advance time and below 15% for the recession time. The water surface profiles computed by the model agree with observed profiles reasonably well. For the data analyzed here the kinematic wave model is found to be sufficiently accurate for modeling the entire irrigation cycle except for the vertical recession.
Description: An edited version of this paper was published by AGU. Copyright 1983 American Geophysical Union.
URI: http://dx.doi.org/10.1029/WR019i006p01599 Files in this item: 1
WR019i006p01599.pdf (1.008Mb) -
Kinematic wave model for transient bed profiles in alluvial channels under nonequilibrium conditionsTayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, December 27, 2007)[more][less]
Abstract: Transient bed profiles in alluvial channels are generally modeled using diffusion (or dynamic) waves and assuming equilibrium between detachment and deposition rates. Equilibrium sediment transport can be considerably affected by an excess (or deficiency) of sediment supply due to mostly flows during flash floods or floods resulting from dam break or dike failure. In such situations the sediment transport process occurs under nonequilibrium conditions, and extensive changes in alluvial river morphology can take place over a relatively short period of time. Therefore the study and prediction of these changes are important for sustainable development and use of river water. This study hence developed a mathematical model based on the kinematic wave theory to model transient bed profiles in alluvial channels under nonequilibrium conditions. The kinematic wave theory employs a functional relation between sediment transport rate and concentration, the shear-stress approach for flow transport capacity, and a relation between flow velocity and depth. The model satisfactorily simulated transient bed forms observed in laboratory experiments.
Description: An edited version of this paper was published by AGU. Copyright 2007 American Geophysical Union.
URI: http://dx.doi.org/10.1029/2006WR005681 Files in this item: 1
2006WR005681.pdf (457.7Kb) -
Bendz, David; Singh, Vijay P.; Rosqvist, H?�kan; Bengtsson, Lars (American Geophysical Union, November 1998)[more][less]
Abstract: The movement of water in a large (3.5 m3) undisturbed sample of 22-year-old municipal solid waste has been modeled using a kinematic wave approximation for unsaturated infiltration and internal drainage. The model employs a two-parameter power expression as macroscopic flux law. The model parameters were determined and interpreted in terms of the internal geometry of the waste medium by fitting the model to one set of infiltration and drainage data. The model was validated using another set of data from a sequence of water input events. The results of the validation show that the model performs satisfactorily, but further development of the model to incorporate spatial variability would increase its capability.
Description: An edited version of this paper was published by AGU. Copyright 1998 American Geophysical Union.
URI: http://dx.doi.org/10.1029/98WR01109 Files in this item: 1
98WR01109.pdf (736.6Kb) -
Tayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, June 21, 2006)[more][less]
Abstract: A mathematical model, based on the kinematic wave (KW) theory, is developed for describing the evolution and movement of bed profiles in alluvial channels. The model employs a functional relation between sediment transport rate and concentration, a relation between flow velocity and depth and Velikanov's formula relating suspended sediment concentration to flow variables. Laboratory flume and field data are used to test the model. Transient bed profiles in alluvial channels are also simulated for several hypothetical cases involving different water flow and sediment concentration characteristics. The model‐simulated bed profiles are found to be in good agreement with what is observed in the laboratory, and they seem theoretically reasonable for hypothetical cases. The model results reveal that the mean particle velocity and maximum concentration (maximum bed form elevation) strongly affect transient bed profiles.
Description: An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
URI: http://dx.doi.org/10.1029/2005WR004089 Files in this item: 1
2005WR004089.pdf (1.253Mb) -
Painter, John H. (IEEE, March 17, 1992)[more][less]
Abstract: Knowledge-based control is defined here as the management of dynamic systems whose states admit qualitative modeling. Contributions from several disparate disciplines, such as artificial intelligence, the decision sciences, and fuzzy control, are examined. An aeronautical application is used to illuminate the concepts examined. Two levels of architecture are presented for implementing qualitative decision and control for an aircraft. A geometric rather than algebraic approach is taken to the knowledge-based control problem.
Description: ©1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
URI: 10.1109/CACSD.1992.274439 Files in this item: 1
painter_mar1992.pdf (884.6Kb) -
Painter, John H.; Lin, S.K.; Glass, E. (IEEE, August 24, 1988)[more][less]
Abstract: The authors examine the application of knowledge-based symbolic control to the management of execution and configuration of a complex numerical control system. Symbolic processing is used to implement inference of system state and internal communication for inference and control. The flavor system provides an object-oriented programming environment in which the inference engine and knowledge base for the symbolic controller are realized. System communication is accomplished by asynchronous message passing using a mailbox facility. The particular target application considered is a software-intensive radio, which is envisioned as being digitally implemented. Symbolic processing is used to internally control the radio down to the module level. Testing is via computer emulation (Monte Carlo).
Description: ©1988 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
URI: 10.1109/ISIC.1988.65435 Files in this item: 1
painter_aug1988.pdf (605.8Kb) -
Bowen, Ray (February 8, 2013)[more][less]
Abstract: Chap. 1: Elementary Matrix Theory; Chap. 2: Vector Spaces; Chap. 3: Linear Transformations; Chap. 4: Vector Spaces with Inner Product; Chap. 5: Eigenvalue Problems; Chap. 6: Additional Topics Relating to Eigenvalue Problems
Description: It is common for Departments of Mathematics to offer a junior-senior level course on Linear Algebra. This book represents one possible course. It evolved from my teaching a junior level course at Texas A&M University during the several years I taught after I served as President. I am deeply grateful to the A&M Department of Mathematics for allowing this Mechanical Engineer to teach their students. This book is influenced by my earlier textbook with C.-C Wang, Introductions to Vectors and Tensors, Linear and Multilinear Algebra. This book is more elementary and is more applied than the earlier book. However, my impression is that this book presents linear algebra in a form that is somewhat more advanced than one finds in contemporary undergraduate linear algebra courses. In any case, my classroom experience with this book is that it was well received by most students. As usual with the development of a textbook, the students that endured its evolution are due a statement of gratitude for their help.
URI: http://hdl.handle.net/1969.1/94772 Files in this item: 1
LecturesOnAppliedMathLinearAlgebra.pdf (2.853Mb) -
Painter, John H.; Tachita, R.; Ikeda, K.; Teranishi, A.; Noe, P.S. (IEEE, November 29, 1988)[more][less]
Abstract: An investigation was conducted on compact, multichannel GPS (global positioning system) receivers. The code generator and correlation equipment were simplified, attempting to avoid downgrading the properties possessed by multichannel receivers as much as possible, and the error-increasing factors caused by such modification were examined. As a means of simplifying the receiver hardware, phases with a unit of 1/8 chip were established in the code generator. Each channel was provided with a circuit for determining correlation, and the phase differences of the carrier and the code were measured by time division. It was confirmed that sufficient accuracy of measurement can be obtained even if such simplification is carried out.
Description: ©1988 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
URI: 10.1109/PLANS.1988.195518 Files in this item: 1
painter_nov1988.pdf (433.5Kb) -
San Andres, Luis ( 2010)[more][less]
Abstract: The basic laws of friction. Fluid Film Bearings. Basic Operational Principles. Hydrodynamic and Hydrostatic Bearing Configurations. Example of rotordynamic study. Performance objectives.
URI: http://hdl.handle.net/1969.1/93198 Files in this item: 3
Notes00 Introduction.pdf (418.7Kb)(more files) -
San Andres, Luis ( 2008)[more][less]
Abstract: Introduction to motion in mechanical systems. Definition of design, analysis, and testing. Steps in Modeling. Continuous and lumped parameter systems. Second Order Systems and differential equations of motion. Definitions of Free and Forced Responses. The purpose of analysis and the relevant issues to resolve.
URI: http://hdl.handle.net/1969.1/93267 Files in this item: 1
Intro_2008.pdf (33.82Kb) -
San Andres, Luis ( 2008)[more][less]
Abstract: Fundamental elements in mechanical systems: inertias, stiffness and damping elements. Equivalent spring coefficients and associated potential energy. Equivalent mass or inertia coefficients and associated kinetic energy. Equations of motion of a rigid body in a plane. Equivalent damping coefficients and associated dissipation energy. Types of damping models (linear or viscous and nonlinear).
URI: http://hdl.handle.net/1969.1/93268 Files in this item: 6
handout1_2008.pdf (357.3Kb)(more files) -
San Andres, Luis ( 2009)[more][less]
Abstract: The fundamental assumption in Lubrication Theory. Derivation of thin film flow equations from Navier-Stokes equations. Importance of fluid inertia effects in thin film flows. Some fluid physical properties
URI: http://hdl.handle.net/1969.1/93199 Files in this item: 1
Notes01 Fundaments Lub Theory.pdf (264.3Kb) -
San Andres, Luis ( 2009)[more][less]
Abstract: Derivation of Reynolds equation for laminar flow bearings. Boundary conditions and types of liquid cavitation.
URI: http://hdl.handle.net/1969.1/93242 Files in this item: 4
Notes02 Classical Lub Theory.pdf (72.20Kb)(more files) -
San Andres, Luis ( 2008)[more][less]
URI: http://hdl.handle.net/1969.1/93269 Files in this item: 5
handout2a_2008.pdf (440.0Kb)(more files) -
San Andres, Luis ( 2009)[more][less]
Abstract: Reynolds equation for cylindrical journal bearings. Kinematics of motion and film thickness. Distinction between fixed and rotating coordinates. The pure squeeze velocity vector. Examples of journal motion.
URI: http://hdl.handle.net/1969.1/93243 Files in this item: 1
Notes03 Kinematics JBs.pdf (114.4Kb) -
San Andres, Luis ( 2008)[more][less]
Abstract: Work and Energy – Single particle. Constraints – degrees of freedom. Principle of virtual work. D’Alembert Principle. Hamilton Principle. Lagrange’s equations of motion.
URI: http://hdl.handle.net/1969.1/93270 Files in this item: 1
Handout4_2008.pdf (100.5Kb) -
San Andres, Luis ( 2010)[more][less]
Abstract: The long and short bearing models. Pressure field and fluid film forces on short length journal bearings. Equilibrium condition, load capacity and the Sommerfeld number.
URI: http://hdl.handle.net/1969.1/93244 Files in this item: 2
Notes04 Static Load JBs 10.pdf (211.7Kb)(more files) -
San Andres, Luis ( 2009)[more][less]
Abstract: Equations of motion of a rigid rotor. The concept of force coefficients. Derivation of stiffness and damping coefficients for the short bearing. Stability analysis and the effect of cross-coupled stiffness. Effect of rotor flexibility on stability and imbalance response.
URI: http://hdl.handle.net/1969.1/93245 Files in this item: 5
Notes05 rigid rotor on JBs 10.pdf (576.0Kb)(more files) -
San Andres, Luis ( 2009)[more][less]
Abstract: Appropriate boundary conditions for a sound cavitation model. The basics of a universal cavitation model (algorithm).
URI: http://hdl.handle.net/1969.1/93246 Files in this item: 2
Notes06 Liquid cavitation model.pdf (194.5Kb)(more files) -
San Andres, Luis ( 2008)[more][less]
URI: http://hdl.handle.net/1969.1/93271 Files in this item: 1
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