Download or read book Etude de l lectrification d un polym re en coulement written by Fabrice Florès and published by . This book was released on 2006 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'extrusion, procédé classique de mise en forme des matières plastiques voit ses cadences de production limitées par l'apparition de défauts en surface des extrudats. Par ailleurs, des charges électriques peuvent aussi être générées sur cette même surface, entraînant des décharges électrostatiques intempestives ou induisant un vieillissement prématuré du matériau. Ce travail s'articule donc autour de ces deux problématiques liées au procédé d'extrusion que sont les défauts d'extrusion et la génération de charges électriques. Nous montrons qu'un modèle d'électrification par création d'une double couche ionique à l'intérieur de la filière et son transport par l'écoulement rend bien compte des résultats expérimentaux. L'électrification peut être calculée via deux grandeurs principales, le profil de charge électrique dans la filière et le profil de vitesse du fluide en écoulement. Pour le profil de charge, dans le cas des polymères, les approximations classiques ne peuvent être faîtes lors de la résolution des équations de transport. Dans le cas du profil de vitesse du fluide, l'importance de la prise en compte du caractère non-newtonien du comportement des polymères est démontrée ainsi que la nécessité de tenir compte d'une vitesse de glissement à la paroi pour l'interprétation des comportements électriques. Réciproquement nous pouvons évaluer une vitesse de glissement à partir de mesures de charges électriques en sortie de filière. Ceci nous permet de montrer le rôle primordial du glissement pour l'étude des mécanismes à l'origine des défauts d'extrusion. Ce travail propose une nouvelle méthode, simple à mettre en œuvre, de mesure des vitesses de glissement, même faibles.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Techniques and technologies for sustainability written by Adrian Atkinson and published by Univerlagtuberlin. This book was released on 2008 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Large Elastic Deformations written by Albert Edward Green and published by Oxford University Press, USA. This book was released on 1970 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical News Bulletin written by and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Integration of Process Design and Control written by Panos Seferlis and published by Elsevier. This book was released on 2004-05-06 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, process design and control system design are performed sequentially. It is only recently displayed that a simultaneous approach to the design and control leads to significant economic benefits and improved dynamic performance during plant operation. Extensive research in issues such as 'interactions of design and control', 'analysis and design of plant wide control systems', 'integrated methods for design and control' has resulted in impressive advances and significant new technologies that have enriched the variety of instruments available for the design engineer in her endeavour to design and operate new processes. The field of integrated process design and control has reached a maturity level that mingles the best from process knowledge and understanding and control theory on one side, with the best from numerical analysis and optimisation on the other. Direct implementation of integrated methods should soon become the mainstream design procedure. Within this context 'The Integration of Process Design and Control', bringing together the developments in a variety of topics related to the integrated design and control, will be a real asset for design engineers, practitioners and researchers. Although the individual chapters reach a depth of analysis close to the frontier of current research status, the structure of the book and the autonomous nature of the chapters make the book suitable for a newcomer in the area. The book comprises four distinct parts: Part A: Process characterization and controllability analysisPart B: Integrated process design and control ⊣ MethodsPart C: Plant wide interactions of design and controlPart D: Integrated process design and control ⊣ Extensions By the end of the book, the reader will have developed a commanding comprehension of the main aspects of integrated design and control, the ability to critically assess the key characteristics and elements related to the interactions between design and control and the capacity to implement the new technology in practice. * This book brings together the latest developments in a variety of topics related to integrated design and control.* It is a valuable asset for design engineers, practitioners and researchers.* The structure of the book and the nature of its chapters also make it suitable for a newcomer to the field.
Download or read book Basic Transport Phenomena in Materials Engineering written by Manabu Iguchi and published by Springer Science & Business Media. This book was released on 2013-09-12 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the basic theory and experimental techniques of transport phenomena in materials processing operations. Such fundamental knowledge is highly useful for researchers and engineers in the field to improve the efficiency of conventional processes or develop novel technology. Divided into four parts, the book comprises 11 chapters describing the principles of momentum transfer, heat transfer, and mass transfer in single phase and multiphase systems. Each chapter includes examples with solutions and exercises to facilitate students’ learning. Diagnostic problems are also provided at the end of each part to assess students’ comprehension of the material. The book is aimed primarily at students in materials science and engineering. However, it can also serve as a useful reference text in chemical engineering as well as an introductory transport phenomena text in mechanical engineering. In addition, researchers and engineers engaged in materials processing operations will find the material useful for the design of experiments and mathematical models in transport phenomena. This volume contains unique features not usually found in traditional transport phenomena texts. It integrates experimental techniques and theory, both of which are required to adequately solve the inherently complex problems in materials processing operations. It takes a holistic approach by considering both single and multiphase systems, augmented with specific practical examples. There is a discussion of flow and heat transfer in microscale systems, which is relevant to the design of modern processes such as fuel cells and compact heat exchangers. Also described are auxiliary relationships including turbulence modeling, interfacial phenomena, rheology, and particulate systems, which are critical to many materials processing operations.
Download or read book Ceramic Processing written by Debasish Sarkar and published by CRC Press. This book was released on 2019-06-20 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive account on the manufacturing techniques to synchronize the desired properties of both traditional and advanced ceramics. Offers exclusive and up to date information on industrial ceramic processing equipment and approaches and discusses actual industrial practices taking a product-oriented approach It should serve as a text to answer the processing of ceramics and achieve targeted product in industrial environment.
Download or read book The Engineer written by and published by . This book was released on 1956 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alternatives in Refrigeration and Air Conditioning written by S. C. Kaushik and published by I K International Pvt Ltd. This book was released on 2016-04-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the issues related to ozone layer depletion and global warming due to use of conventional cooling technologies and refrigerants in the field of Refrigeration and Air Conditioning (RAC). It describes, simulates and analyses the alternate technologies and alternate refrigerants. Unconventional refrigeration technologies are explored.
Download or read book Finite Difference Equations written by Hyman Levy and published by Courier Corporation. This book was released on 1992-01-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive study focuses on use of calculus of finite differences as an approximation method for solving troublesome differential equations. Elementary difference operations; interpolation and extrapolation; modes of expansion of the solutions of nonlinear equations, applications of difference equations, difference equations associated with functions of two variables, more. Exercises with answers. 1961 edition.
Download or read book Solar Energy Technology Handbook written by William C. Dickinson and published by Marcel Dekker. This book was released on 1980 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integration of Geographic Information Systems and Remote Sensing written by Jeffrey L. Star and published by Cambridge University Press. This book was released on 1997-01-28 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of remote sensing and geographic information systems to resource management and environmental research.
Download or read book Symposium on Rheology written by Andrew W. Marris and published by . This book was released on 1965 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Institute of Petroleum written by Institute of Petroleum (Great Britain) and published by . This book was released on 1917 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1987-11 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Philostratus written by Philostratus (the Athenian) and published by . This book was released on 1912 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
