Download or read book Mathematical Modeling and Numerical Simulations of Automotive Catalytic Converters written by Figen Lacin and published by . This book was released on 2002 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi scale Simulation of Automotive Catalytic Converters written by Cansu Ozhan and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing use of passenger vehicles over the past decades has caused an increase in harmful exhaust gas emissions which give rise to environmental and health problems. This problematic has led governments to establish very stringent emission limits. The emission restrictions require more performing after-treatment systems. Among many other solutions, analysing and optimising the flow impact on the conversion efficiency is an important step towards the solution of the complex engineering problem. Detailed velocity, temperature and concentration distributions are very difficult to measure experimentally. Numerical simulations can provide additional information to understand the interaction of flow distribution and conversion efficiency. The simulation of these systems is computationally very expensive due to complex physical and chemical phenomena occurring simultaneously throughout the system. To overcome this cost, one can resort to some simplified physical and chemical models together with specific numerical techniques to simulate the system with a reduced computational time. In this dissertation, we develop a general approach to model and simulate the automotive catalytic converter system including all the physical and chemical processes. The present approach combines sub-grid models and numerical multi-resolution techniques in order to correctly capture the flow characteristics inside an automotive catalytic converter. While Adaptive Mesh Refinement (AMR) techniques are optimized in order to minimise the computational effort in the divergent and convergent regions, a sub-grid model is developed to describe the flow inside the catalytic substrate placed between the convergent and divergent regions. The performance of the sub-grid model is validated against the experimental results obtained by Benjamin et al. (2002). The effective coupling of AMR techniques and the sub-grid model allows to capture the flow features with significantly reduced computational time. The impact of pulsating and expansion flow on the conversion efficiency within a single monolith channel is investigated numerically. AMR techniques are shown to capture the small boundary layers near the wall at the solid-fluid interface. Based on the numerical results, we propose a simplified transport model that captures the effects of flow, diffusion and catalytic wall reactions. The simplified transport model can be directly applied as a sub-grid model for the complete description of all the physical and chemical processes taking place inside the system. The developed physical, chemical and numerical modelling approaches make the three-dimensional simulations possible with a reasonable computational time still capturing the main physics of the problem.
Download or read book Mathematical Analysis and Numerical Simulation of some Nonlinear Problems in Solid Mechanics written by María Teresa Sánchez Rúa and published by Univ Santiago de Compostela. This book was released on 2010 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Modeling written by Ellis Cumberbatch and published by Cambridge University Press. This book was released on 2001-10 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents thirteen different case studies, ranging from cooking of cereal to the analysis of epidemic waves in animal populations.
Download or read book Advanced Developments in Ultra Clean Gasoline Powered Vehicles written by Fuquan Zhao and published by SAE International. This book was released on 2004-03-08 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last several years, significant efforts have been directed toward the development of ultra-clean, gasoline-powered vehicles in the automotive industry. With the coming of increasingly stringent emissions legislation, this development is more critical now than ever before. This has lead to an increase in the technical information available. Advanced Developments in Ultra-Clean Gasoline-Powered Vehicles provides the reader with technical information including a description of fundamental processes, insight on technical issues, key trends, and future R&D directions.
Download or read book Mathematical Modeling of a Catalytic Converter Lightoff written by Se H. Oh and published by . This book was released on 1984 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational heat and mass transfer CHMT 2001 Vol II written by and published by Editora E-papers. This book was released on with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emission Control Modeling written by and published by . This book was released on 2001 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of papers from the 2001 SAE World Congress, held March 5-8 in Detroit, Michigan. Papers cover a range of computer modeling applications to emissions systems design. Topics covered include heat management, fluid flow modeling (1D as well as 3D), durability analysis, muffler and catalyst performance, and integration of emission systems to engine performance and control. Paper topics are: microkinetics modeling of catalytic converters; on a model-based control of a three-way catalytic converter; an integrated powertrain (IPT) model - stage 2, systems integration, supervisory control and simulation of emissions control technology; 1D unsteady flows with chemical reactions in the exhaust duct-system of SI engines - predictions and experiments; a modular numerical simulation tool predicting catalytic converter light-off by improved modeling of thermal management and conversion characteristics; the solution for steady state temperature distribution in monolithic catalytic converters; optimum gas design and durability analysis of catalytic converter assembly; numerical analysis of the exhaust gas flow and heat transfer in a close-coupled catalytic converter system during warm-up; and three-dimensional numerical study on the pulsating flow inside an automotive muffler with complicated flow path.
Download or read book 12th International Symposium on Process Systems Engineering and 25th European Symposium on Computer Aided Process Engineering written by and published by Elsevier. This book was released on 2015-07-14 with total page 2667 pages. Available in PDF, EPUB and Kindle. Book excerpt: 25th European Symposium on Computer-Aided Process Engineering contains the papers presented at the 12th Process Systems Engineering (PSE) and 25th European Society of Computer Aided Process Engineering (ESCAPE) Joint Event held in Copenhagen, Denmark, 31 May - 4 June 2015. The purpose of these series is to bring together the international community of researchers and engineers who are interested in computing-based methods in process engineering. This conference highlights the contributions of the PSE/CAPE community towards the sustainability of modern society. Contributors from academia and industry establish the core products of PSE/CAPE, define the new and changing scope of our results, and future challenges. Plenary and keynote lectures discuss real-world challenges (globalization, energy, environment, and health) and contribute to discussions on the widening scope of PSE/CAPE versus the consolidation of the core topics of PSE/CAPE. - Highlights how the Process Systems Engineering/Computer-Aided Process Engineering community contributes to the sustainability of modern society - Presents findings and discussions from both the 12th Process Systems Engineering (PSE) and 25th European Society of Computer-Aided Process Engineering (ESCAPE) Events - Establishes the core products of Process Systems Engineering/Computer Aided Process Engineering - Defines the future challenges of the Process Systems Engineering/Computer Aided Process Engineering community
Download or read book Modeling and Simulation of Heterogeneous Catalytic Processes written by and published by Academic Press. This book was released on 2014-09-22 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis and mathematical modeling are essential components of the continuing search for better utilization of raw materials and energy, with reduced impact on the environment. Numerical modeling of chemical systems has progressed rapidly due to increases in computer power, and is used extensively for analysis, design and development of catalytic reactors and processes. This book presents reviews of the state-of-the-art in modeling of heterogeneous catalytic reactors and processes. Reviews by leading authorities in the respective areas Up-to-date reviews of latest techniques in modeling of catalytic processes Mix of US and European authors, as well as academic/industrial/research institute perspectives Connections between computation and experimental methods in some of the chapters
Download or read book Mathematical Modeling of the Transient Behavior of Nonolithic Converters Fro Oxidizing Automobile Exhaust written by Terry John Bergman and published by . This book was released on 1975 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Joint Meeting of the U S Sections of the Combustion Institute Western States Central States Eastern States written by and published by . This book was released on 1999 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematics Key Technology for the Future written by Willi Jäger and published by Springer Science & Business Media. This book was released on 2011-06-28 with total page 733 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient transfer between science and society is crucial for their future development. The rapid progress of information technology and computer systems offers a large potential and new perspectives for solving complex problems. Mathematical modelling and simulation have become important tools not only in scientific investigations but also in analysing, planning and controlling technological and economic processes. Mathematics, imbedded in an interdisciplinary concept, has become a key technology. The book covers the results of a variety of major projects in industrial mathematics following an initiative of the German Federal Ministry of Education and Research. All projects are collaborations of industrial companies and university-based researchers, and range from automotive industry to computer technology and medical visualisation. In general, the projects presented in this volume prove that new mathematical ideas and methods can be decisive for the solution of industrial and economic problems.
Download or read book Mathematical Modeling Simulation Visualization and e Learning written by Dialla Konaté and published by Springer Science & Business Media. This book was released on 2007-12-08 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features articles written by some of the most prominent leading applied mathematicians as well as young and promising ones. The common objective of these articles is to present an important issue which is currently widely discussed in scientific investigation with major human, economic or ecological implications. Each article is as deep as an expert lecture but is also self-contained, so that even isolated scientists with limited resources can profit greatly from it.
Download or read book 1D and Multi D Modeling Techniques for IC Engine Simulation written by Angelo Onorati and published by SAE International. This book was released on 2020-04-06 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1D and Multi-D Modeling Techniques for IC Engine Simulation provides a description of the most significant and recent achievements in the field of 1D engine simulation models and coupled 1D-3D modeling techniques, including 0D combustion models, quasi-3D methods and some 3D model applications.
Download or read book A Mathematical Model of an Automotive Carbon Monoxide and Hydrocarbon Catalytic Converter written by John Henry Johnson and published by . This book was released on 1973 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structured Catalysts and Reactors written by Andrzej Cybulski and published by CRC Press. This book was released on 2005-11-02 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in structured catalysts is steadily increasing due to the already proven, as well as potential, advantages of these catalysts. Updating the comprehensive coverage of the first edition published in 1998 with the latest science and applications, Structured Catalysts and Reactors, Second Edition gives detailed information on all aspect
