Solutions to Problems in Heat Transfer. Transient Conduction Or Unsteady Conduction PDF Download
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Author: Osama Mohammed Elmardi
Publisher: Anchor Academic Publishing
ISBN: 3960671237
Category : Technology & Engineering
Languages : en
Pages : 109
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Book Description
Many heat transfer problems are time dependent. Such unsteady or transient problems typically arise when the boundary conditions of a system are changed. For example, if the surface temperature of a system is altered, the temperature at each point in the system will also begin to change. The changes will continue to occur until a steady state temperature distribution is reached. Consider a hot metal billet that is removed from a furnace and exposed to a cool air stream. Energy is transferred by convection and radiation from its surface to the surroundings. Energy transfer by conduction also occurs from the interior of the metal to the surface, and the temperature at each point in the billet decreases until a steady state condition is reached. The final properties of the metal will depend significantly on the time – temperature history that results from heat transfer. Controlling the heat transfer is one key to fabricating new materials with enhanced properties. The author’s objective in this textbook is to develop procedures for determining the time dependence of the temperature distribution within a solid during a transient process, as well as for determining heat transfer between the solid and its surroundings. The nature of the procedure depends on assumptions that may be made for the process. If, for example, temperature gradients within the solid may be neglected, a comparatively simple approach, termed the lumped capacitance method or negligible internal resistance theory, may be used to determine the variation of temperature with time. The entire book has been thoroughly revised and a large number of solved examples and additional unsolved problems have been added. This book contains comprehensive treatment of the subject matter in simple and direct language. The book comprises eight chapters. All chapters are saturated with much needed text supported and by simple and self-explanatory examples.
Author: Osama Mohammed Elmardi
Publisher: Anchor Academic Publishing
ISBN: 3960671237
Category : Technology & Engineering
Languages : en
Pages : 109
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Book Description
Many heat transfer problems are time dependent. Such unsteady or transient problems typically arise when the boundary conditions of a system are changed. For example, if the surface temperature of a system is altered, the temperature at each point in the system will also begin to change. The changes will continue to occur until a steady state temperature distribution is reached. Consider a hot metal billet that is removed from a furnace and exposed to a cool air stream. Energy is transferred by convection and radiation from its surface to the surroundings. Energy transfer by conduction also occurs from the interior of the metal to the surface, and the temperature at each point in the billet decreases until a steady state condition is reached. The final properties of the metal will depend significantly on the time – temperature history that results from heat transfer. Controlling the heat transfer is one key to fabricating new materials with enhanced properties. The author’s objective in this textbook is to develop procedures for determining the time dependence of the temperature distribution within a solid during a transient process, as well as for determining heat transfer between the solid and its surroundings. The nature of the procedure depends on assumptions that may be made for the process. If, for example, temperature gradients within the solid may be neglected, a comparatively simple approach, termed the lumped capacitance method or negligible internal resistance theory, may be used to determine the variation of temperature with time. The entire book has been thoroughly revised and a large number of solved examples and additional unsolved problems have been added. This book contains comprehensive treatment of the subject matter in simple and direct language. The book comprises eight chapters. All chapters are saturated with much needed text supported and by simple and self-explanatory examples.
Author: Mohammed Elmardi Osama
Publisher:
ISBN: 9783659668227
Category :
Languages : en
Pages : 112
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Book Description
Author: Je-Chin Han
Publisher: CRC Press
ISBN: 1000597296
Category : Science
Languages : en
Pages : 595
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Book Description
Analytical Heat Transfer explains how to analyze and solve conduction, convection, and radiation heat transfer problems. It enables students to tackle complex engineering heat transfer problems prevalent in practice. Covering heat transfer in high-speed flows and unsteady highly turbulent flows, the book also discusses enhanced heat transfer in channels, heat transfer in rotating channels, numerical modeling for turbulent flow heat transfer, and thermally developing heat transfer in a circular tube. The second edition features new content on Duhamel’s superposition method, Green’s function method for transient heat conduction, finite-difference method for steady state and transient heat conduction in cylindrical coordinates, and laminar mixed convection. It includes two new chapters on laminar-to-turbulent transitional heat transfer and turbulent flow heat transfer enhancement, in addition to end-of-chapter problems. The book bridges the gap between basic heat transfer undergraduate courses and advanced heat transfer graduate courses for a single semester of intermediate heat transfer, advanced conduction/radiation heat transfer, or convection heat transfer. Features: Focuses on analyzing and solving classic heat transfer problems in conduction, convection, and radiation Covers 2-D and 3-D view factor evaluation, combined radiation with conduction and/or convection, and gas radiation optically thin and optically thick limits Features updated content and new chapters on mass and heat transfer analogy, thermally developing heat transfer in a circular tube, laminar-turbulent transitional heat transfer, unsteady highly turbulent flows, enhanced heat transfer in channels, heat transfer in rotating channels, and numerical modeling for turbulent flow heat transfer Provides step-by-step mathematical formula derivations, analytical solution procedures, and demonstration examples Includes end-of-chapter problems with an accompanying Solutions Manual for instructors This book is ideal for undergraduate and graduate students studying basic heat transfer and advanced heat transfer.
Author: Jan Taler
Publisher: Springer Science & Business Media
ISBN: 3540334718
Category : Science
Languages : en
Pages : 890
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Book Description
This book presents a solution for direct and inverse heat conduction problems, discussing the theoretical basis for the heat transfer process and presenting selected theoretical and numerical problems in the form of exercises with solutions. The book covers one-, two- and three dimensional problems which are solved by using exact and approximate analytical methods and numerical methods. An accompanying CD-Rom includes computational solutions of the examples and extensive FORTRAN code.
Author: D. Srinivasan
Publisher: New Age International
ISBN: 9788122415025
Category : Energy transfer
Languages : en
Pages : 552
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Book Description
The Presentation Adopted In The Preparation Endeavors To Convey To The Student In A Simple Manner, A Physical Understanding Of The Processes By Which Heat Is Transmitted And Provide Him Or Her With The Tools Necessary To Get Quantitative Solutions To Engineering Problems Involving One Or More Of The Basic Modes Of Heat Flow. Sufficient Material Has Been Included In The Text To Cater To The Requirements Of The Undergraduate Curriculum. Illustrations Pertaining To The Different Modes Of Heat Transfer And The Design Calculations Of Heat Exchangers Have Been Liberally Included In The Text.The Purpose Of This Book Is To Present A Basic Introduction To The Field Of Engineering Heat Transfer. The Book Begins With A Brief Presentation Of The Importance Of Heat Transfer In Chemical And Processing Industry And The Modes Of Heat Transfer. Chapter 2, Dealing With Conduction, Includes A Few Aspects Of Conduction Phenomenon, Analogy Between Heat Flow And Electricity Flow, Critical Thickness And Conduction With Internal Generation Of Heat. In Chapter 3, The Concept Of Film Coefficients Is Presented And The Relationship Between The Individual And Overall Heat Transfer Coefficients Are Dealt With. The Phenomenon Of Unsteady State Heat Transfer And The Methods Of Solving One Dimensional Transient Heat Conduction Problems Have Been Discussed In Chapter 4, Which Is On Unsteady State Heat Conduction. Also The Application Of Molecular Transport Theory To The Unsteady State Heat Conduction Is Included.In Chapter 5, Which Is On Convection, A General Basic Concept, The Application Of Dimensional Analysis In The Case Of Forced And Free Convection, The Heat Transfer From Fins, The Heat Transfer To Fluids In Laminar Flow Inside Tubes, Heat Transfer From Condensed Vapours And Boiling Heat Transfer Are Included. The Various Types Of Heat Exchangers, The Concept Of Capacity Ratios, The Effectiveness Of Heat Exchanger, The Log Mean Temperature Difference, The Number Of Transfer Units (Ntu) And Calculations Pertaining To Heat Exchanger Design And The Effectiveness-Ntu Relationship Have Been Discussed In Chapter 6, Which Bears The Title 'Industrial Heat Exchange Equipment'.In Chapter 7, Which Is On Thermal Energy Transfer By Radiation, The Basic Concepts And Theory Of Radiation Are Presented. In Chapter 8, Which Deals With Evaporation, The Basic Concepts And Definitions, Boiling Point Elevation, Types Of Evaporators, Single And Multiple Effect Evaporation, The Occurrence Of Heat Transfer In Evaporators And The Analysis Of Performance Calculations Of Multiple Effect Evaporators Are Discussed At Some Length. Chapter 9, The Final Chapter, Presents A Brief Review Of Heat Transfer Principles.
Author: Oleg M. Alifanov
Publisher: Springer Science & Business Media
ISBN: 3642764363
Category : Science
Languages : en
Pages : 360
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Book Description
This research monograph presents a systematic treatment of the theory of the propagation of transient electromagnetic fields (such as optical pulses) through dielectric media which exhibit both dispersion a.nd absorption. The work divides naturally into two parts. Part I presents a summary of the fundamental theory of the radiation and propagation of rather general electromagnetic waves in causal, linear media which are homogeneous and isotropic but which otherwise have rather general dispersive and absorbing properties. In Part II, we specialize to the propagation of a plane, transient electromagnetic field in a homogeneous dielectric. Although we have made some contributions to the fundamental theory given in Part I, most of the results of our own research appear in Part II. The purpose of the theory presented in Part II is to predict and to explain in explicit detail the dynamics of the field after it has propagated far enough through the medium to be in the mature-dispersion regime. It is the subject of a classic theory, based on the research conducted by A. Sommerfeld and L.
Author: Sadık Kakac
Publisher: CRC Press
ISBN: 135171418X
Category : Science
Languages : en
Pages : 408
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Book Description
Heat Conduction, Fifth Edition, upholds its reputation as the leading text in the field for graduate students, and as a resource for practicing engineers. The text begins with fundamental concepts, introducing the governing equation of heat conduction, and progresses through solutions for one-dimensional conduction, orthogonal functions, Fourier series and transforms, and multi-dimensional problems. Integral equations, Laplace transforms, finite difference numerical methods, and variational formulations are then covered. A systematic derivation of the analytical solution of heat conduction problems in heterogeneous media, introducing a more general approach based on the integral transform method, has been added in this new edition, along with new and revised problems, and complete problem solutions for instructors.
Author: Rajendra Karwa
Publisher: Springer Nature
ISBN: 981153988X
Category : Science
Languages : en
Pages : 1162
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Book Description
This textbook presents the classical treatment of the problems of heat transfer in an exhaustive manner with due emphasis on understanding of the physics of the problems. This emphasis will be especially visible in the chapters on convective heat transfer. Emphasis is also laid on the solution of steady and unsteady two-dimensional heat conduction problems. Another special feature of the book is a chapter on introduction to design of heat exchangers and their illustrative design problems. A simple and understandable treatment of gaseous radiation has been presented. A special chapter on flat plate solar air heater has been incorporated that covers mathematical modeling of the air heater. The chapter on mass transfer has been written looking specifically at the needs of the students of mechanical engineering. The book includes a large number and variety of solved problems with supporting line diagrams. A number of application-based examples have been incorporated where applicable. The end-of-chapter exercise problems are supplemented with stepwise answers. Though the book has been primarily designed to serve as a complete textbook for undergraduate and graduate students of mechanical engineering, it will also be useful for students of chemical, aerospace, automobile, production, and industrial engineering streams. The book fully covers the topics of heat transfer coursework and can also be used as an excellent reference for students preparing for competitive graduate examinations.
Author:
Publisher: Academic Press
ISBN: 0080575781
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
Advances in Heat Transfer is designed to fill the information gap between the regularly scheduled journals and university level textbooks, allowing for in-depth review articles on a broader scope than is allowable in either journals or texts. Reviews recent work on melt lubrication at the interface between two solid parts, one of which is at its melting point Employs variational principle with vanishing parameter in the study of linear and nonlinear transient heat conduction through bodies of finite length Reviews heat transfer in porous media and its rapidly growing body of literature Emphasizes recent developments in handling complex geometry, treating wide flow speed variations, yielding accurate solutions, and producing results efficiently as illustrated throughout with many examples Discusses unsteady convective situations which are generated in response to the time-dependent boundary conditions on the surface walls of a container, and its practical industrial applications
Author: Amir Faghri
Publisher: Global Digital Press
ISBN: 0984276009
Category : Heat
Languages : en
Pages : 958
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Book Description
All relevant advanced heat and mass transfer topics in heat conduction, convection, radiation, and multi-phase transport phenomena, are covered in a single textbook, and are explained from a fundamental point of view.
