Visionneuse

Date_TXT

Berlin : Springer, 2000

Cote

363.739 4 KOV

Auteur

Karel, Kovarik

Sujet

Groundwater -- Pollution -- Mathematical models Groundwater flow -- Mathematical models Eaux souterraines -- Pollution -- Modèles mathématiques Eaux souterraines -- Écoulement -- Modèles mathématiques Hydrogéologie

Type de document

Livre

Description :

This book originated from my rich experience with the development of numerical modeling software and its use in hydrogeology. I have often met with the approach to a numerical model as if it were a "black box", where the essential information about the method used (its possibilities and restrictions) was lacking. This may lead to the wrong choice of method as well as to a wrong interpretation of results. A certain conservatism is also present that rejects the most up-to-date numerical methods mainly due to their more complicated mathematics. For these reasons, I set my sights on reviewing the whole group of numerical methods from the oldest (the finite differences method) to the most modern, such as the dual reciprocity boundary element method. After the Introduction, the next two chapters discuss the basic equations of a groundwater flow and of the transport of pollutants in a porous medium, while chapter 4 concentrates on the fundamentals of numerical mathematics. Chapters 5 and 6 study each method of numerical modeling separately. A final comparison is to be found in chapter 7. Several practical applications of these methods are listed in chapter 8 and, finally, chapter 9 explains the software included in this book. The CD inside contains the Beflow system which serves to demonstrate the possibilities of the BEM and the random walk methods and the UNSDIS system as examples of the solution of vertical transport of pollutants through the unsaturated zone applying FEM. Besides the actual programs, the CD includes both their source codes (prepared by means of the visual C++ version 6.0 programming language from Microsoft Corp.) and a gallery of results from chapter 8. The latter is constructed as an HTML page which can be viewed either by the simple browser that we include or by a professional one (e.g. the IE or Netscape). Finally, I wish to thank Dr. M. Drahos for allowing me to use some reports of the 1st modeling group in chapter 8. Moreover, I thank my sons, Karol and Michal, for the effort put in to the translation of this book and last, but not least, my wife for her patience with me during the writing of the manuscript.