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Author: Courtney E. Apperson
Publisher:
ISBN:
Category : Diffusion
Languages : en
Pages : 98
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Book Description
The multicomponent time-dependent diffusion with radioactive decay problem which arises in the study of high-temperature gas-cooled reactors fission product migration is solved in one-dimensional geometries. The spatial multicomponent diffusion operator is numerically represented by a conservative finite difference approximation. An analytic time-dependent solution is achieved using a matrix operator method. Comparisons of the analytic-numerical solution method with a variety of analytic solutions give excellent agreement. This solution technique has been incorporated into an algorithm for use in a computer code, DASH. The holdup of 90Sr by graphite is calculated.
Author: Courtney E. Apperson
Publisher:
ISBN:
Category : Diffusion
Languages : en
Pages : 98
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Book Description
The multicomponent time-dependent diffusion with radioactive decay problem which arises in the study of high-temperature gas-cooled reactors fission product migration is solved in one-dimensional geometries. The spatial multicomponent diffusion operator is numerically represented by a conservative finite difference approximation. An analytic time-dependent solution is achieved using a matrix operator method. Comparisons of the analytic-numerical solution method with a variety of analytic solutions give excellent agreement. This solution technique has been incorporated into an algorithm for use in a computer code, DASH. The holdup of 90Sr by graphite is calculated.
Author:
Publisher:
ISBN:
Category : Rare animals
Languages : en
Pages : 52
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Book Description
Author: United States. Bureau of Land Management
Publisher:
ISBN:
Category : Rare animals
Languages : en
Pages : 52
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Book Description
Author: Y.K. Cheung
Publisher: Springer Science & Business Media
ISBN: 9780792313137
Category : Science
Languages : en
Pages : 314
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Book Description
This book presents the latest developments in structural dynamics with particular emphasis on the formulation of equations of motion by finite element methods and their solution using microcomputers. The book discusses the use of frequency-dependent shape functions for realistic finite element modelling, as opposed to the approximate conventional shape functions. A useful feature of the book in handling the forced vibration problem is the separation of the solution into two parts; the steady state and transient. Advanced topics such as substructure and synthesis are viewed in a modern unified manner. A complete listing of the finite element programme NATVIB used is given.
Author: Panos M. Pardalos
Publisher: Springer Science & Business Media
ISBN: 146143498X
Category : Mathematics
Languages : en
Pages : 898
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Book Description
The volume will consist of about 40 articles written by some very influential mathematicians of our time and will expose the latest achievements in the broad area of nonlinear analysis and its various interdisciplinary applications.
Author: J.F. Doyle
Publisher: Springer Science & Business Media
ISBN: 9401134200
Category : Science
Languages : en
Pages : 456
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Book Description
This book is concerned with the static and dynamic analysis of structures. Specifi cally, it uses the stiffness formulated matrix methods for use on computers to tackle some of the fundamental problems facing engineers in structural mechanics. This is done by covering the Mechanics of Structures, its rephrasing in terms of the Matrix Methods, and then their Computational implementation, all within a cohesivesetting. Although this book is designed primarily as a text for use at the upper-undergraduate and beginning graduate level, many practicing structural engineers will find it useful as a reference and self-study guide. Several dozen books on structural mechanics and as many on matrix methods are currently available. A natural question to ask is why another text? An odd devel opment has occurred in engineering in recent years that can serve as a backdrop to why this book was written. With the widespread availability and use of comput ers, today's engineers have on their desk tops an analysis capability undreamt of by previous generations. However, the ever increasing quality and range of capabilities of commercially available software packages has divided the engineering profession into two groups: a small group of specialist program writers that know the ins and outs of the coding, algorithms, and solution strategies; and a much larger group of practicing engineers who use the programs. It is possible for this latter group to use this enormous power without really knowing anything of its source.
Author: V. B. Venkayya
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 226
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Book Description
This report, prepared for training, is intended to bring out the elements of structural design optimization on modern computers. The first section gives a cursory description of the requirements and essential disciplines involved in aircraft structural design. The second section is an optimization paper that provides the basis for optimization using large finite element assemblies. The third section provides a summary of design sensitivity analysis which is an essential element of optimization. The two appendices are the descriptions of two training programs for analysis and optimization. Each of these sections has their own references. This is an informal report intended for training and is a collection material entirely from the open literature.
Author: Roy C. Swanson (Jr.)
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 192
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Book Description
Author: R. Kent Dybvig
Publisher: MIT Press
ISBN: 026251298X
Category : Computers
Languages : en
Pages : 505
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Book Description
A thoroughly updated and expanded edition brings this popular introductory text and reference up to date with the current Scheme standard, the Revised6 Report on Scheme. Scheme is a general-purpose programming language, descended from Algol and Lisp, widely used in computing education and research and a broad range of industrial applications. This thoroughly updated edition of The Scheme Programming Language provides an introduction to Scheme and a definitive reference for standard Scheme, presented in a clear and concise manner. Written for professionals and students with some prior programming experience, it begins by leading the programmer gently through the basics of Scheme and continues with an introduction to some of the more advanced features of the language. The fourth edition has been substantially revised and expanded to bring the content up to date with the current Scheme standard, the Revised6 Report on Scheme. All parts of the book were updated and three new chapters were added, covering the language's new library, exception handling, and record-definition features. The book offers three chapters of introductory material with numerous examples, eight chapters of reference material, and one chapter of extended examples and additional exercises. All of the examples can be entered directly from the keyboard into an interactive Scheme session. Answers to many of the exercises, a complete formal syntax of Scheme, and a summary of forms and procedures are provided in appendixes. The Scheme Programming Language is the only book available that serves both as an introductory text in a variety of courses and as an essential reference for Scheme programmers.
Author: John Dee
Publisher: Рипол Классик
ISBN: 5885140944
Category : History
Languages : en
Pages : 489
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Book Description
