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Modeling In Transport Phenomena

Author: Ismail Tosun
Publisher: Elsevier
ISBN: 9780080549507
Size: 25.93 MB
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Modeling in Transport Phenomena, Second Edition presents and clearly explains with example problems the basic concepts and their applications to fluid flow, heat transfer, mass transfer, chemical reaction engineering and thermodynamics. A balanced approach is presented between analysis and synthesis, students will understand how to use the solution in engineering analysis. Systematic derivations of the equations and the physical significance of each term are given in detail, for students to easily understand and follow up the material. There is a strong incentive in science and engineering to understand why a phenomenon behaves the way it does. For this purpose, a complicated real-life problem is transformed into a mathematically tractable problem while preserving the essential features of it. Such a process, known as mathematical modeling, requires understanding of the basic concepts. This book teaches students these basic concepts and shows the similarities between them. Answers to all problems are provided allowing students to check their solutions. Emphasis is on how to get the model equation representing a physical phenomenon and not on exploiting various numerical techniques to solve mathematical equations. A balanced approach is presented between analysis and synthesis, students will understand how to use the solution in engineering analysis. Systematic derivations of the equations as well as the physical significance of each term are given in detail Many more problems and examples are given than in the first edition - answers provided

Modelling In Transport Phenomena

Author: Ismail Tosun
Publisher: Elsevier
ISBN: 9780080511856
Size: 47.29 MB
Format: PDF
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Modelling in Transport Phenomena: A Conceptual Approach aims to show students how to translate the inventory rate equation into mathematical terms at both the macroscopic and microscopic levels. The emphasis is on obtaining the equation representing a physical phenomenon and its interpretation. The book begins with a discussion of basic concepts and their characteristics. It then explains the terms appearing in the inventory rate equation, including ""rate of input"" and ""rate of output."" The rate of generation in transport of mass, momentum, and energy is also described. Subsequent chapters detail the application of inventory rate equations at the macroscopic and microscopic levels. This book is intended as an undergraduate textbook for an introductory Transport Phenomena course in the junior year. It can also be used in unit operations courses in conjunction with standard textbooks. Although it is written for students majoring in chemical engineering, it can also serve as a reference or supplementary text in environmental, mechanical, petroleum, and civil engineering courses.

Introduction To Modeling Of Transport Phenomena In Porous Media

Author: Jacob Bear
Publisher: Springer Science & Business Media
ISBN: 9400919263
Size: 58.88 MB
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The main purpose of this book is to provide the theoretical background to engineers and scientists engaged in modeling transport phenomena in porous media, in connection with various engineering projects, and to serve as a text for senior and graduate courses on transport phenomena in porous media. Such courses are taught in various disciplines, e. g. , civil engineering, chemical engineering, reservoir engineering, agricultural engineering and soil science. In these disciplines, problems are encountered in which various extensive quantities, e. g. , mass and heat, are transported through a porous material domain. Often the porous material contains several fluid phases, and the various extensive quantities are transported simultaneously throughout the multiphase system. In all these disciplines, management decisions related to a system's development and its operation have to be made. To do so, the 'manager', or the planner, needs a tool that will enable him to forecast the response of the system to the implementation of proposed management schemes. This forecast takes the form of spatial and temporal distributions of variables that describe the future state of the considered system. Pressure, stress, strain, density, velocity, solute concentration, temperature, etc. , for each phase in the system, and sometime for a component of a phase, may serve as examples of state variables. The tool that enables the required predictions is the model. A model may be defined as a simplified version of the real (porous medium) system that approximately simulates the excitation-response relations of the latter.

Chemische Transportreaktionen

Author: Michael Binnewies
Publisher: Walter de Gruyter
ISBN: 3110248964
Size: 46.11 MB
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Unter dem Begriff Chemische Transportreaktionen fasst man eine Vielzahl von Reaktionen mit einem gemeinsamen Merkmal zusammen: Eine feste oder flA1/4ssige Komponente wird in Gegenwart eines gasfArmigen Reaktionspartners, des Transportmittels, verflA1/4chtigt und scheidet sich an anderer Stelle meist in Form gut ausgebildeter Kristalle wieder ab. Die Abscheidung kann dann erfolgen, wenn am Ort der Kristallisation andere AuAere Bedingungen herrschen als am Ort der VerflA1/4chtigung, in der Regel eine andere Temperatur. HAufig ist der Chemische Transport mit einem Reinigungseffekt verbunden. Wir haben es also mit einem Verfahren zur Herstellung reiner und gut kristallisierter Feststoffe zu tun. Insbesondere die Herstellung von Einkristallen stellt einen besonderen Wert dar, denn sie ermAglicht unter anderem die Bestimmung der Kristallstruktur mit Hilfe von RAntgenbeugungsverfahren. Aoeber diese Aspekte der reinen Grundlagenforschung hinaus haben Chemische Transportreaktionen auch eine praktische Bedeutung erlangt: Sie bilden die Grundlage der Funktionsweise von Halogenlampen. Auch ein groAtechnisches Verfahren beruht auf einer Chemischen Transportreaktion, das MOND-LANGER-Verfahren zur Herstellung von hochreinem Nickel.

Modelling And Applications Of Transport Phenomena In Porous Media

Author: Jacob Bear
Publisher: Springer Science & Business Media
ISBN: 9401126321
Size: 58.77 MB
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Transport phenomenain porous media are encounteredin various disciplines, e. g. , civil engineering, chemical engineering, reservoir engineering, agricul tural engineering and soil science. In these disciplines, problems are en countered in which various extensive quantities, e. g. , mass and heat, are transported through a porous material domain. Often, the void space of the porous material contains two or three fluid phases, and the various ex tensive quantities are transported simultaneously through the multiphase system. In all these disciplines, decisions related to a system's development and its operation have to be made. To do so a tool is needed that will pro vide a forecast of the system's response to the implementation of proposed decisions. This response is expressed in the form of spatial and temporal distributions of the state variables that describe the system's behavior. Ex amples of such state variables are pressure, stress, strain, density, velocity, solute concentration, temperature, etc. , for each phase in the system, The tool that enables the required predictions is the model. A model may be defined as a simplified version of the real porous medium system and the transport phenomena that occur in it. Because the model is a sim plified version of the real system, no unique model exists for a given porous medium system. Different sets of simplifying assumptions, each suitable for a particular task, will result in different models.

A Basic Introduction To Pollutant Fate And Transport

Author: Frank M. Dunnivant
Publisher: John Wiley & Sons
ISBN: 0471758124
Size: 78.32 MB
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A uniquely accessible text on environmental modeling designed for both students and industry personnel Pollutant fate and modeling are becoming increasingly important in both regulatory and scientific areas. However,the complexity of the software and models often act as an inhibitor to the advancement of water quality science. A Basic Introduction to Pollutant Fate and Transport fills the need for a basic instructional tool for students and environmental professionals who lack the rigorous mathematical background necessary to derive the governing fate and transport equations. Taking a refreshingly simple approach to the subject that requires only a basic knowledge of algebra and first-year college chemistry, the book presents and integrates all of the aspects of fate and transport, including chemistry, modeling, risk assessment, and relevant environmental legislation; approaching each topic first conceptually before introducing the math necessary to model it. The first half of the book is dedicated to the chemistry and physics behind the fate and transport models, while the second half teaches and reinforces the logical concepts underlying fate and transport modeling. This better prepares students for support jobs in the environmental arena surrounding chemical industry and Superfund sites. Contributing to the book's ease of use are: An extremely user-friendly software program, Fate, which uses basic models to predict the fate and transport of pollutants in lakes, rivers, groundwater, and atmospheric systems The use of "canned" models to evaluate the importance of model parameters and sensitivity analysis A wealth of easy-to-understand examples and problems A chapter on environmental legislation in the United States and Europe A set of lab exercises, as well as a downloadable set of teaching aids A much-needed basic text for contemporary hydrology or environmental chemistry courses and support courses forthe environmental industry, this is a valuable desk reference for educators and industry professionals.

Grundwasserchemie

Author: Broder J. Merkel
Publisher: Springer-Verlag
ISBN: 366207611X
Size: 23.19 MB
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Die Autoren konzentrieren sich in ihrem Werk auf die Lösung praxisorientierter hydrogeochemischer Fragestellungen und schließen damit eine Lücke im Bereich anwendungsorientierter Lehrbücher. Ein erster Teil fasst dabei die Theorie soweit zusammen, daß es auch Neulingen im Bereich der Modellierung und Nichtchemikern leicht gemacht wird, das anspruchsvolle Thema zu erfassen. Akademikern mit hydrogeologischer oder chemischer Grundausbildung sowie Studenten höherer Semester in den relevanten Fachgebieten erlaubt das Buch, anhand der beschriebenen Beispiele und Lösungen, eine eigenständige Erarbeitung der Sachverhalte. Die beiliegende CD-ROM ermöglicht zudem eine rasche Überprüfung der Ergebnisse, bzw. das Nachvollziehen aller Aufgaben und Lösungen anhand der beigefügten PhreeC-Eingabedateien. Da das Programm PhreeC kostenfrei verfügbar ist und mit Windows-Oberfläche auf der CD-ROM vorhanden ist, kann sofort mit der Modellierung begonnen werden.

Transport Phenomena In Porous Media Iii

Author: Derek B Ingham
Publisher: Elsevier
ISBN: 9780080543185
Size: 31.73 MB
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Fluid and flow problems in porous media have attracted the attention of industrialists, engineers and scientists from varying disciplines, such as chemical, environmental, and mechanical engineering, geothermal physics and food science. There has been a increasing interest in heat and fluid flows through porous media, making this book a timely and appropriate resource. Each chapter is systematically detailed to be easily grasped by a research worker with basic knowledge of fluid mechanics, heat transfer and computational and experimental methods. At the same time, the readers will be informed of the most recent research literature in the field, giving it dual usage as both a post-grad text book and professional reference. Written by the recent directors of the NATO Advanced Study Institute session on 'Emerging Technologies and Techniques in Porous Media' (June 2003), this book is a timely and essential reference for scientists and engineers within a variety of fields.