Introduction To Computational Engineering Hydraulics Romuald Szymkiewicz by Romuald Szymkiewicz, Suiliang Huang, Adam Szymkiewicz 9788373486720, 8373486720 instant download after payment.

As
stated by Roberson, Cassidy and Chaudhry (1998): “Hydraulic engineering is the
application of fluid mechanics and other science and engineering disciplines in
the design of structures, and the development of projects and systems involving
water resources”. An engineering consideration of any technical problem implies
quantitative analysis, so obviously such an analysis in hydraulic engineering
requires the computations of large range of the water flow problems. Indeed,
the area of interest of hydraulic engineering covers all possible water flow
cases, taking place in closed conduits (pipes and their systems), at the Earth’s
surface (reservoirs, open channels) and in subsurface porous soils and rocks. The
problems of water flow listed above are closely related to another discipline
of science and technique, namely to environmental engineering, which focuses
attention on the availability and quality of water resources. As the latter
issue is strictly related to the contaminant migration in water bodies, mass
transport phenomena should be considered as well.

Application
of the basic principles of conservation to a control volume of water body leads
to mathematical expression of the physical rules which govern the considered
flow cases. These rules are written in the form of equations. Depending on the
assumptions introduced during their derivation, they can take various
particular forms. Consequently, a hydraulic engineer during his professional
activity typically faces a very large spectrum of equations describing
different cases of water flow. As the flow process of any fluid can be a very
complex phenomenon, the corresponding equations are often relatively
complicated and their solution can be a challenging task. From the fundamental
course of fluid mechanics and hydraulics results that even simple flow cases
are described by equations requiring a significant computational effort to be
solved. This can be caused for instance by:

punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">nonlinearity appearing in many equations,


punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">non-uniform spatial distribution of the parameters,


punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">unsteadiness of flow process and the necessity of integration in
long time intervals,


punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">irregular shape of integration domain,


punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">forced additional conditions which vary irregularly in time,


punctuation-wrap:simple;text-autospace:none;vertical-align:baseline">
EN-US">large dimensions of the final systems of algebraic equations which
must be solved.
EN-US">

EN-US">The main aim of this book is to provide the reader with the fundamentals
of computational methods used in hydraulic engineering. To make easier
following of the presented problems by the reader, we decided to divide it into
two parts.

EN-US">In Part 1 some fundamental numerical techniques, the most frequently
used in hydraulic and environmental engineering are briefly presented.
Subsequent chapters of Part 1 are devoted to an overview of the typical computational
techniques applied to solve of the systems of linear algebraic equations, the
nonlinear equations and their systems and the ordinary differential equations
frequently occurring in hydraulic engineering. Particular attention is focused
on partial differential equations, playing very important role in flow dynamics
analysis, as well as on the numerical methods commonly applied for their
solution, i.e. the finite difference method and the finite element method. Moreover
some other related computational problems as the approximation and numerical
solution of optimization problems will be presented.

EN-US">Part 2 of this book deals with presentation and derivation of some
governing equations typically encountered in hydraulic engineering. In the
subsequent sections the equations for steady and unsteady flow in open
channels, in closed conduits and in the subsurface including those for transport
of matter dissolved in flowing water are considered. As our aim is not to give
a complete course dealing with the hydromechanics and hydraulics, descriptions
of the considered flow problems are presented as simple as possible. For more
information the reader is referred to the sources presenting a more
comprehensive description of the discussed problems. For this reason our
considerations are limited rather to the one dimensional flow problems, with
the exception of groundwater flow. Apart from short presentation of the considered
problems and description of the methods applied for their solution, examples of
computer codes written in Fortran language are also provided. Moreover, many
computational examples illustrating considered problems and the applied
approaches for their solutions are included into the text. However, we will
consider problems related to the water flow and mass transport phenomena only.
Computational problems dealing with the design of engineering structures are outside
the scope of this book.

mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast;mso-ansi-language:
EN-US;mso-fareast-language:PL;mso-bidi-language:AR-SA">       The presented book is dedicated primarily to the students of
civil and environmental engineering. It is well known that the basic courses of
the numerical techniques applied in hydraulic engineering and given at various
technical universities are very similar. Noticing this fact the authors coming from
China (College
of Environmental Science and
Engineering at Nankai University in Tianjin )
and from Poland
(Faculty of Civil and Environmental Engineering at Gdańsk University of
Technology), decided to elaborate commonly a textbook covering the areas
defined by the respective syllabuses at both Universities. During the preparation
of this textbook the experiences resulting from our earlier co-operation on mathematical
modeling of the transport and flow phenomena of the surface and ground waters
appeared very useful. We hope that the presented textbook will be useful for
the students of both Universities – in Tianjin
and in Gdańsk.
We hope as well as that this textbook can be interesting and helpful not only
for our students, but also for other readers interested in the numerical methods
and in hydraulic engineering.