With the overwhelming use of computers in engineering, science and physics, the approximate solution of complex mathematical systems of equations is almost commonplace. The Best Approximation Method unifies many of the numerical methods used in computational mechanics. Nevertheless, despite the vast quantities of synthetic data there is still some doubt concerning the validity and accuracy of these approximations. This publication assists the computer modeller in his search for the best approximation by presenting functional analysis concepts. Computer programs are provided which can be used by readers with FORTRAN capability. The classes of problems examined include engineering applications, applied mathematics, numerical analysis and computational mechanics. The Best Approximation Method in Computational Mechanics serves as an introduction to functional analysis and mathematical analysis of computer modelling algorithms. It makes computer modellers aware of already established principles and results assembled in functional analysis.

The Best Approximation Method in Computational Mechanics

Hromadka, Theodore V. II

Springer, Verlag

<p>Computer software is presented for several hydraulic and hydrologic analysis procedures which commonly occur in the design of urban watershed flood control systems. The programs are based on FORTRAN, and CADI screens are also presented which display the sequence of prompts and the associated variable name and the assumed limits of entry values. The book also serves as documentation for the urban watershed hydraulics series of computer software which is available from Advanced Engineering Software (AES) of Irvine, California. Consequently, the provided form fields reflect the actual program entry sequences as used in the AES software.</p>

Computer Methods in Urban Watershed Hydraulics

Science & Math

Clements, James M.

Saluja, Harsh

Technology

Lighthouse Pubns

Computational Hydrology in Flood Control Design and Planning

The most commonly used numerical techniques in solving engineering and mathematical models are the Finite Element, Finite Difference, and Boundary Element Methods. As computer capabilities continue to impro':e in speed, memory size and access speed, and lower costs, the use of more accurate but computationally expensive numerical techniques will become attractive to the practicing engineer. This book presents an introduction to a new approximation method based on a generalized Fourier series expansion of a linear operator equation. Because many engineering problems such as the multi dimensional Laplace and Poisson equations, the diffusion equation, and many integral equations are linear operator equations, this new approximation technique will be of interest to practicing engineers. Because a generalized Fourier series is used to develop the approxi mator, a "best approximation" is achieved in the "least-squares" sense; hence the name, the Best Approximation Method. This book guides the reader through several mathematics topics which are pertinent to the development of the theory employed by the Best Approximation Method. Working spaces such as metric spaces and Banach spaces are explained in readable terms. Integration theory in the Lebesque sense is covered carefully. Because the generalized Fourier series utilizes Lebesque integration concepts, the integra tion theory is covered through the topic of converging sequences of functions with respect to measure, in the mean (Lp), almost uniformly IV and almost everywhere. Generalized Fourier theory and linear operator theory are treated in Chapters 3 and 4.

The Best Approximation Method An Introduction (Lecture Notes in Engineering, 27)

Pinder, George F.

Yen, Chung-Cheng

Mathematics

Springer

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