Theodore V. Hromadka II's Books

A Diffusion Hydrodynamic Model

By: Theodore V. Hromadka II,Prasada Rao,Chung-Cheng Yen

Write a review Read reviews Take a Quiz Solve Book Puzzle

A Diffusion Hydrodynamic Model

By: Theodore V. Hromadka II,Prasada Rao,Chung-Cheng Yen

The Diffusion Hydrodynamic Model (DHM), as presented in the 1987 USGS publication, was one of the first computational fluid dynamics computational programs based on the groundwater program MODFLOW, which evolved into the control volume modeling approach. Over the following decades, others developed similar computational programs that either used the methodology and approaches presented in the DHM directly or were its extensions that included additional components and capacities. Our goal is to demonstrate that the DHM, which was developed in an age preceding computer graphics/visualization tools, is as robust as any of the popular models that are currently used. We thank the USGS for their approval and permission to use the content from the earlier USGS report.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

Publisher

BoD – Books on Demand

Published Date

ISBN 10

1839628170

ISBN 13

9781839628177

Stochastic Integral Equations and Rainfall-Runoff Models

By: Theodore V. Hromadka II,Robert J. Whitley

Write a review Read reviews Take a Quiz Solve Book Puzzle

Stochastic Integral Equations and Rainfall-Runoff Models

By: Theodore V. Hromadka II,Robert J. Whitley

The subject of rainfall-runoff modeling involves a wide spectrum of topics. Fundamental to each topic is the problem of accurately computing runoff at a point given rainfall data at another point. The fact that there is currently no one universally accepted approach to computing runoff, given rainfall data, indicates that a purely deter ministic solution to the problem has not yet been found. The technology employed in the modern rainfall-runoff models has evolved substantially over the last two decades, with computer models becoming increasingly more complex in their detail of describing the hydrologic and hydraulic processes which occur in the catchment. But despite the advances in including this additional detail, the level of error in runoff estimates (given rainfall) does not seem to be significantly changed with increasing model complexity; in fact it is not uncommon for the model's level of accuracy to deteriorate with increasing complexity. In a latter section of this chapter, a literature review of the state-of-the-art in rainfall-runoff modeling is compiled which includes many of the concerns noted by rainfall-runoff modelers. The review indicates that there is still no deterministic solution to the rainfall-runoff modeling problem, and that the error in runoff estimates produced from rainfall-runoff models is of such magnitude that they should not be simply ignored.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

401

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642493092

ISBN 13

9783642493096

Advances in the Complex Variable Boundary Element Method

By: Theodore V. Hromadka,Robert J. Whitley

Write a review Read reviews Take a Quiz Solve Book Puzzle

Advances in the Complex Variable Boundary Element Method

By: Theodore V. Hromadka,Robert J. Whitley

As well as describing the extremely useful applications of the CVBEM, the authors explain its mathematical background -- vital to understanding the subject as a whole. This is the most comprehensive book on the subject, bringing together ten years of work and can boast the latest news in CVBEM technology. It is thus of particular interest to those concerned with solving technical engineering problems -- while scientists, graduate students, computer programmers and those working in industry will all find the book helpful.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

402

Publisher

Springer Science & Business Media

Published Date

ISBN 10

144713611X

ISBN 13

9781447136118

The Best Approximation Method An Introduction

By: Theodore V. II Hromadka,Chung-Cheng Yen,George F. Pinder

Write a review Read reviews Take a Quiz Solve Book Puzzle

The Best Approximation Method An Introduction

By: Theodore V. II Hromadka,Chung-Cheng Yen,George F. Pinder

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.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

185

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642830382

ISBN 13

9783642830389

The Complex Variable Boundary Element Method in Engineering Analysis

By: Theodore V. Hromadka,Chintu Lai

Write a review Read reviews Take a Quiz Solve Book Puzzle

The Complex Variable Boundary Element Method in Engineering Analysis

By: Theodore V. Hromadka,Chintu Lai

The Complex Variable Boundary Element Method (CVBEM) has emerged as a new and effective modeling method in the field of computational mechanics and hydraulics. The CVBEM is a generalization of the Cauchy integral formula into a boundary integral equation method. The model ing approach by boundary integration, the use of complex variables for two-dimensional potential problems, and the adaptability to now-popular microcomputers are among the factors that make this technique easy to learn, simple to operate, practical for modeling, and efficient in simulating various physical processes. Many of the CVBEM concepts and notions may be derived from the Analytic Function Method (AFM) presented in van der Veer (1978). The AFM served as the starting point for the generalization of the CVBEM theory which was developed during the first author's research engagement (1979 through 1981) at the University of California, Irvine. The growth and expansion of the CVBEM were subsequently nurtured at the U. S. Geological Survey, where keen interest and much activity in numerical modeling and computational mechanics-and-hydraulics are prevalent. Inclusion of the CVBEM research program in Survey's computational-hydraulics projects, brings the modeling researcher more uniform aspects of numerical mathematics in engineering and scientific problems, not to mention its (CVBEM) practicality and usefulness in the hydrologic investigations. This book is intended to introduce the CVBEM to engineers and scientists with its basic theory, underlying mathematics, computer algorithm, error analysis schemes, model adjustment procedures, and application examples.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

397

Publisher

Springer Science & Business Media

Published Date

ISBN 10

1461246601

ISBN 13

9781461246602

The Best Approximation Method in Computational Mechanics

By: Theodore V., II Hromadka

Write a review Read reviews Take a Quiz Solve Book Puzzle

The Best Approximation Method in Computational Mechanics

By: Theodore V., II Hromadka

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.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

259

Publisher

Springer Science & Business Media

Published Date

ISBN 10

1447120205

ISBN 13

9781447120209

Book's by Theodore V. Hromadka II

A Diffusion Hydrodynamic Model

A Diffusion Hydrodynamic Model

Stochastic Integral Equations and Rainfall-Runoff Models

Stochastic Integral Equations and Rainfall-Runoff Models

Advances in the Complex Variable Boundary Element Method

Advances in the Complex Variable Boundary Element Method

The Best Approximation Method An Introduction

The Best Approximation Method An Introduction

The Complex Variable Boundary Element Method in Engineering Analysis

The Complex Variable Boundary Element Method in Engineering Analysis

The Best Approximation Method in Computational Mechanics

The Best Approximation Method in Computational Mechanics

Username

Password

Username

Password

Password again

Birthday

Email