Author: Peter Stephan, Karlheinz Schaber, Karl Stephan, Franz Mayinger
In Band 1 des zweiteiligen Grundlagenwerks zur Thermodynamik wird die Theorie systematisch entwickelt. Bilanzen und allgemein gültige Zusammenhänge zwischen thermodynamischen Zustandsgrößen werden zunächst für beliebige thermodynamische Systeme abgeleitet und danach auf eine Vielzahl von Spezialfällen angewandt. Der Band enthält Berechnungsbeispiele mit ausführlichen Lösungen sowie Übungsaufgaben. Für die 18. Auflage wurde das Kapitel über Stoffeigenschaften aktualisiert und die Abschnitte zu den wichtigsten thermodynamischen Prozessen erweitert.
Das Einstellen der Luftmasse in den Zylindern eines Verbrennungsmotors ist eine der wichtigsten Aufgaben von Motorsteuerungen. Insbesondere bei Ottomotoren ist die als Füllung bezeichnete Luftmasse in der Regel proportional zum erzeugten Drehmoment und daher zentrale Größe bei der Formung der Fahrdynamik sowie des Fahrkomforts. In der vorliegenden Arbeit werden modellbasierte Vorsteuerungen vorgestellt, die es ermöglichen neben der Luftmasse auch die Restgasmasse im gesamten Arbeitsbereich des Motors einzustellen. Bei dem für den Vorsteuerungsentwurf eingesetzten Modell handelt es sich um ein physikalisch basiertes Mittelwertmodell des Luftsystems. Das Modell wird durch Anwendung der exakten Ein-/Ausgangslinearisierung invertiert. Es werden strukturelle Modellerweiterungen eingeführt, durch die die Vorsteuerung als inverses System stabil ist und eine physikalische Struktur besitzt. Eine reduzierte Form der Vorsteuerung mit der Luftmasse als einzige Regelgröße und der Drosselklappe und dem Abgasturbolader als Aktoren wird am Motorenprüfstand im gesamten Nennbereich des Motors sowohl stationär als auch dynamisch validiert. Die Messergebnisse dokumentieren die hohe stationäre und dynamische Genauigkeit der modellbasierten Vorsteuerung.
Author: Peter von Böckh, Thomas Wetzel
Publisher: Springer Science & Business Media
The book provides an easy way to understand the fundamentals of heat transfer. The reader will acquire the ability to design and analyze heat exchangers. Without extensive derivation of the fundamentals, the latest correlations for heat transfer coefficients and their application are discussed. The following topics are presented - Steady state and transient heat conduction - Free and forced convection - Finned surfaces - Condensation and boiling - Radiation - Heat exchanger design - Problem-solving After introducing the basic terminology, the reader is made familiar with the different mechanisms of heat transfer. Their practical application is demonstrated in examples, which are available in the Internet as MathCad files for further use. Tables of material properties and formulas for their use in programs are included in the appendix. This book will serve as a valuable resource for both students and engineers in the industry. The author’s experience indicates that students, after 40 lectures and exercises of 45 minutes based on this textbook, have proved capable of designing independently complex heat exchangers such as for cooling of rocket propulsion chambers, condensers and evaporators for heat pumps.
Handbook of Preparative Inorganic Chemistry, Volume 2, Second Edition focuses on the methods, mechanisms, and chemical reactions involved in conducting experiments on inorganic chemistry. Composed of contributions of various authors, the second part of the manual focuses on elements and compounds. Included in the discussions are copper, silver, and gold. Numerical calculations and diagrams are presented to show the properties, compositions, and chemical reactions of these materials when exposed to varying laboratory conditions. The manual also looks at other elements such as scandium, yttrium, titanium, zirconium, hafnium, and thorium. Lengthy discussions on the characteristics and nature of these elements are presented. The third part of the guidebook discusses special compounds. The manual also provides formula and subject index, including an index for procedures, materials, and devices. Considering the value of information presented, the manual can best serve the interest of readers and scientists wanting to institute a system in the conduct of experiments in laboratories.
As most modern technologies are no longer discipline-specific but involve multidisciplinary approaches, undergraduate engineering students should be introduced to the principles of mechanics so that they have a strong background in the basic principles common to all disciplines and are able to work at the interface of science and engineering disciplines. This textbook is designed for a first course on principles of mechanics and provides an introduction to the basic concepts of stress and strain and conservation principles. It prepares engineer-scientists for advanced courses in traditional as well as emerging fields such as biotechnology, nanotechnology, energy systems, and computational mechanics. This simple book presents the subjects of mechanics of materials, fluid mechanics, and heat transfer in a unified form using the conservation principles of mechanics.
Gyrodynamics and Its Engineering Applications deals with the engineering applications of gyrodynamics in a manner that stresses the physical concepts. Topics covered range from the kinematics of rigid bodies to frames of reference, along with moments and products of inertia. Gyro-verticals and the gyrodynamics of machines are also considered. Comprised of 16 chapters, this book begins with a historical background on gyroscopes and an introduction to vectors, the kinematics of a particle, and rotating systems. The emphasis is on certain fundamental ideas governing the movement of bodies in three dimensions. Motion with respect to moving axes is discussed in detail, with particular attention to the intangible Coriolis acceleration. Subsequent chapters focus on the inertial characteristics of bodies and certain dynamical theorems; the motion of a free body and of a symmetrical gyroscope under gravity; gyroscopic vibration absorbers and stabilizers; the gyro-compass; suspensions for gyroscopes; gyro-verticals; and rate and integrating gyroscopes. The book also discusses inertial navigation as well as the whirling of shafts and aircraft gyrodynamics. This monograph is intended primarily for engineers, but should also prove valuable to university teachers, research workers, and those who encounter gyroscopic problems.
High-Performance Scientific Computing
Author: Edoardo Di Napoli, Marc-André Hermanns, Hristo Iliev, Andreas Lintermann, Alexander Peyser
This book constitutes the thoroughly refereed post-conference proceedings of the First JARA High-Performance Computing Symposium, JARA-HPC 2016, held in Aachen, Germany, in October 2016. The 21 full papers presented were carefully reviewed and selected from 26 submissions. They cover many diverse topics, such as coupling methods and strategies in Computational Fluid Dynamics (CFD), performance portability and applications in HPC, as well as provenance tracking for large-scale simulations.
Free Boundaries in Rock Mechanics
Author: Anvarbek Meirmanov, Oleg V. Galtsev, Reshat N. Zimin
Publisher: Walter de Gruyter GmbH & Co KG
This monograph is concerned with free-boundary problems of partial differential equations arising in the physical sciences and in engineering. The existence and uniqueness of solutions to the Hele-Shaw problem are derived and techniques to deal with the Muskat problem are discussed. Based on these, mathematical models for the dynamics of cracks in underground rocks and in-situ leaching are developed. Contents Introduction The Hele–Shaw problem A joint motion of two immiscible viscous fluids Mathematical models of in-situ leaching Dynamics of cracks in rocks Elements of continuum mechanics
Science of Hard Materials
Author: R. Viswanadham
Publisher: Springer Science & Business Media
This volume contains the proceedings of the first International Conference on the Science of Hard Materials held in Moran, Wyoming, Aug. 23-28, 1981. The objective of the conference was to review and advance the state of knowledge of the basic physical and chemical properties of hard materials and show how these properties influence performance in a variety of applications. To this end, the 49 con tributed papers and the four keynote papers by Prof. Fischmeister and Drs. Hintermann, Exner and Almond, present an excellent overview of the state of the art in the "science" of hard materials. The contents of these proceedings also reflect the fact that hard metal technology is now well matured and several aspects of the behavior of these materials are well understood and firmly established. Structure-property relationships in this class of materials are currently well known. Pitfalls in some of the traditional test methods have been recognized and new test methods are being developed which discriminate between intrinsic material properties and flaw content and distribution. Application of fracture mechanics, al though a late corner to the hard materials area (as compared to other structural materials), is rapidly gaining acceptance and new fracture toughness test methods are being developed. Application of modern analysis and analytical techniques to these materials has begun and entirely new and unexpected information has been obtained. For a variety of reasons, "hard metals" have dominated the research and development scene of "hard materials".
Author: Rudolf Meyer, Josef Köhler, Axel Homburg
Publisher: John Wiley & Sons
The unrivaled, definitive reference for almost 40 years, this classic work on explosives is now in its seventh, completely revised and updated edition. Some 500 monographic entries, arranged alphabetically, consider the physicochemical properties, production methods, and safe applications of over 120 explosive chemicals. In addition, 70 fuels, additives, and oxidizing agents are discussed as well as the corresponding test methods. Trade, company, and military short names are provided for many of the materials listed, while further key features include a combined index and glossary with terms and abbreviations in English, French, and German, as well as conversion tables and many literature references. Finally, this indispensable source also contains safety data and transport regulations.
Vascular CT Angiography Manual
Author: Robert Pelberg, Wojciech Mazur
Publisher: Springer Science & Business Media
Despite the exponential growth in the use of peripheral CTA in the diagnosis and follow-up of vascular disease patients, practical sources from which to gain valuable expertise in this field remain scarce. There is becoming a great need for experts in the field of peripheral CTA, yet learning this imaging modality may be intimidating and time consuming. Very few if any, small, concise and portable books exist to ease training in this field and current books in this field are overwhelming, difficult to manage, text books that often combine CTA and MRI. A so called " how to manual" and reference guide to explain this technique from beginning to end, which compiles valuable, and difficult to obtain clinical pearls and descriptions of disease processes will be of tremendous value. The Peripheral CT Angiography Manual aims to make learning this intimidating technique and the diseases for which it applies simple and fun.
The diary kept in 1704 by Sarah Kimball Knight on her hazardous journey from Boston to New York and back to Boston on horseback is marked by gusto, good humor, earthiness, and the evidence of keen observation.