Numerical modeling and simulation of particulate fouling on structured heat transfer surfaces using multiphase Eulerian-Lagrangian LES

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Publisher : Cuvillier Verlag
ISBN 13 : 3736964196
Total Pages : 178 pages
Book Rating : 4.7/5 (369 download)

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Book Synopsis Numerical modeling and simulation of particulate fouling on structured heat transfer surfaces using multiphase Eulerian-Lagrangian LES by : Robert Kasper

Download or read book Numerical modeling and simulation of particulate fouling on structured heat transfer surfaces using multiphase Eulerian-Lagrangian LES written by Robert Kasper and published by Cuvillier Verlag. This book was released on 2021-04-30 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Durch die gezielte Strukturierung von wärmeübertragenden Oberflächen, wie beispielsweise durch Dellen oder Rippen, kann die örtliche Turbulenz und damit die thermische Durchmischung gesteigert werden. Dies kann die Effizienz von Wärmeübertragern oder Bauteilkühlsystemen erheblich erhöhen. Derartige Oberflächenstrukturrierungen begünstigen jedoch das Partikelfouling, daher die Ablagerung suspendierter Partikel, wie z.B. Sand, Schlamm oder Korrosionsprodukte. Gegenstand dieser Arbeit ist die Entwicklung eines universellen, numerischen CFD-Verfahrens zur Vorhersage des partikulären Foulings auf strukturierten Oberflächen, speziell Dellenoberflächen. Das entwickelte Verfahren basiert auf einer Kombination des Lagrangian-Particle-Trackings zur Beschreibung der dispersen Phase (Foulingpartikel), sowie räumlich und zeitlich aufgelöster Large-Eddy Simulation für die Berechnung der kontinuierlichen Phasen (Trägerfluid). Dieses Vorgehen ermöglicht nicht nur die Auswertung der infolge der Partikelablagerungen verminderten thermo-hydraulischen Effizienz, sondern auch die Untersuchung der Wechselwirkungen zwischen turbulenten Strömungsstrukturen und dem partikulärem Fouling. Dadurch kann gezeigt werden, dass die Verwendung von sphärischen Dellen als Oberflächenstrukturen nicht nur aus thermo-hydraulischer Sicht die optimale Wahl darstellt, sondern auch eine substantielle Verminderung des Partikelfoulings begünstigt. The application of structured heat transfer surfaces, such as dimples or ribs, increase the local turbulence and thus thermal mixing. This can improve the efficiency of heat exchangers or cooling systems significantly. However, structured surfaces are known to promote particulate fouling, hence the unwanted accumulation and deposition of suspended particles (e.g., silt, sludge or iron oxide). The scope of this work is the development of a universal numerical CFD method for the prediction of particulate fouling, especially on dimpled surfaces. The proposed approach is based on a combination of the Lagrangian point-particle tracking for the description of the disperse phase (fouling particles), and spatially and temporally resolved large-eddy simulations for the calculation of the continuous phase (carrier fluid). This approach allows not only the evaluation of the reduced thermo-hydraulic efficiency due to particle deposition, but also the investigation of the interaction between turbulent flow structures and the particulate fouling. It can be shown that the usage of spherical dimples as surface structures is not only the optimal choice from a thermo-hydraulic point of view, but also favors a substantial reduction of particulate fouling.

Modelling of Particulate Fouling on Heat Transfer Surfaces

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Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (663 download)

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Book Synopsis Modelling of Particulate Fouling on Heat Transfer Surfaces by : François Cussac

Download or read book Modelling of Particulate Fouling on Heat Transfer Surfaces written by François Cussac and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fouling Science and Technology

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Publisher : Springer Science & Business Media
ISBN 13 : 9400928130
Total Pages : 720 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Fouling Science and Technology by : L. Melo

Download or read book Fouling Science and Technology written by L. Melo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fouling of heat exchangers, reactors and catalysts remains one of the most urgent problems facing the process industries. Over the past ten years there has been limited research and investigation into the underlying mechanisms which give rise to this problem. For convenience, particularly in heat exchanger technology, the mechanisms involved have been subdivided into different subject areas. It is often the situation that individuals or groups of workers have concentra ted efforts in one or two of these specialist areas and there is a need to integrate the ideas across the whole spectrum of the subject. In addition, topics such as adhesion and surface phenomena have not been properly taken into account up till now in the assessment of the fouling processes. For this reason it was considered essential that the recognised experts from around the world, who are actively concerned with research, development and design in the fieId, should meet and exchange ideas and experience. Such a meeting was held at Alvor, Portugal, in May 1987, sponsored by the NATO Advanced St~dy Institutes Programme. In order to obtain a common basis for the work of the Advanced Study Institute, the whole technological field was reviewed right from the basic concepts to the frontiers of present knowledge. Each invited contributor was asked to make an overall presentation covering his or her area of expertise.

Fouling of Heat Exchangers

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Publisher : Elsevier
ISBN 13 : 0080531903
Total Pages : 547 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Fouling of Heat Exchangers by : T.R. Bott

Download or read book Fouling of Heat Exchangers written by T.R. Bott and published by Elsevier. This book was released on 1995-04-13 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique and comprehensive text considers all aspects of heat exchanger fouling from the basic science of how surfaces become fouled to very practical ways of mitigating the problem and from mathematical modelling of different fouling mechanisms to practical methods of heat exchanger cleaning. The problems that restrict the efficient operation of equipment are described and the costs, some of them hidden costs, that are associated with the fouling of heat exchangers are discussed. Some simple concepts and models of the fouling processes are presented as part of the introduction to the subject.Advice on the selection, design, installation and commissioning of heat exchangers to minimise fouling is given. A large part of the text is devoted to the use of chemical and other additives to reduce or eliminate the problem of fouling. Another large section is designed to give information on both on-line and off-line cleaning of heat exchangers. One of the difficulties faced by designers and operators of heat exchangers is anticipating the likely extent of fouling problems to be encountered with different flow streams. Another large section addresses the question and describes methods that have been used in attempting to define fouling potential. The book concludes with a chapter on how fouling information can be obtained using plant data, field tests and laboratory studies.

OpenFOAM®

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Publisher : Springer
ISBN 13 : 3319608460
Total Pages : 536 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis OpenFOAM® by : J. Miguel Nóbrega

Download or read book OpenFOAM® written by J. Miguel Nóbrega and published by Springer. This book was released on 2019-01-24 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected papers of the 11th OpenFOAM® Workshop that was held in Guimarães, Portugal, June 26 - 30, 2016. The 11th OpenFOAM® Workshop had more than 140 technical/scientific presentations and 30 courses, and was attended by circa 300 individuals, representing 180 institutions and 30 countries, from all continents. The OpenFOAM® Workshop provided a forum for researchers, industrial users, software developers, consultants and academics working with OpenFOAM® technology. The central part of the Workshop was the two-day conference, where presentations and posters on industrial applications and academic research were shown. OpenFOAM® (Open Source Field Operation and Manipulation) is a free, open source computational toolbox that has a larger user base across most areas of engineering and science, from both commercial and academic organizations. As a technology, OpenFOAM® provides an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics, among several others. Additionally, the OpenFOAM technology offers complete freedom to customize and extend its functionalities.

Composite Fouling on Heat Exchanger Surfaces

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Publisher : Nova Publishers
ISBN 13 : 9781600211164
Total Pages : 182 pages
Book Rating : 4.2/5 (111 download)

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Book Synopsis Composite Fouling on Heat Exchanger Surfaces by : Yu Hong

Download or read book Composite Fouling on Heat Exchanger Surfaces written by Yu Hong and published by Nova Publishers. This book was released on 2007 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deposition of amorphous silica (SiO2) and calcium oxalate (CaOx) on the calandria tubes of juice evaporators cause serious processing problems in Australian cane sugar mills. The removal of these deposits by mechanical and chemical means is a time-consuming and costly experience. The cost of downtime and chemical cleaning can be several million dollars per year for the Australian sugar industry. The interactions between CaOx and SiO2 have not been investigated previously because conventional studies only address fouling by individual components. The present work evaluates their interactions using two experimental approaches: batch tests for assessing kinetic and thermodynamic behaviour, and fouling-loop experiments for examining composite fouling behaviour under different operating conditions. These two approaches were employed both in the absence and in the presence of sugar to elucidate the effect of sugar on composite fouling mechanisms and to determine the controlling species responsible for composite fouling. The combined information obtained from both the batch and fouling-loop tests in this study offer a unique insight into the mechanisms of composite fouling of CaOx and SiO2.

Crude Oil Fouling

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Publisher : Gulf Professional Publishing
ISBN 13 : 0128013591
Total Pages : 385 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Crude Oil Fouling by : Francesco Coletti

Download or read book Crude Oil Fouling written by Francesco Coletti and published by Gulf Professional Publishing. This book was released on 2014-11-20 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: With production from unconventional rigs continuing to escalate and refineries grappling with the challenges of shale and heavier oil feedstocks, petroleum engineers and refinery managers must ensure that equipment used with today's crude oil is protected from fouling deposits Crude Oil Fouling addresses this overarching challenge for the petroleum community with clear explanations on what causes fouling, current models and new approaches to evaluate and study the formation of deposits, and how today's models could be applied from lab experiment to onsite field usability for not just the refinery, but for the rig, platform, or pipeline. Crude Oil Fouling is a must-have reference for every petroleum engineer's library that gives the basic framework needed to analyze, model, and integrate the best fouling strategies and operations for crude oil systems. - Defines the most critical variables and events that cause fouling - Explains the consequences of fouling and its impact on operations, safety, and economics - Provides the technical models available to better predict and eliminate the potential for fouling in any crude system

Fouling of Heat Transfer Equipment

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Publisher :
ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Fouling of Heat Transfer Equipment by : E. F. C. Somerscales

Download or read book Fouling of Heat Transfer Equipment written by E. F. C. Somerscales and published by . This book was released on 1981 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Compact Heat Exchangers for Energy Transfer Intensification

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Publisher : CRC Press
ISBN 13 : 148223260X
Total Pages : 383 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Compact Heat Exchangers for Energy Transfer Intensification by : Jiri Jaromir Klemes

Download or read book Compact Heat Exchangers for Energy Transfer Intensification written by Jiri Jaromir Klemes and published by CRC Press. This book was released on 2015-12-16 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compact Heat Exchangers for Energy Transfer Intensification: Low-Grade Heat and Fouling Mitigation provides theoretical and experimental background on heat transfer intensification in modern heat exchangers. Emphasizing applications in complex heat recovery systems for the process industries, this book:Covers various issues related to low-grade hea

Heat Transfer

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Publisher : BoD – Books on Demand
ISBN 13 : 9533072261
Total Pages : 670 pages
Book Rating : 4.5/5 (33 download)

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Book Synopsis Heat Transfer by : Aziz Belmiloudi

Download or read book Heat Transfer written by Aziz Belmiloudi and published by BoD – Books on Demand. This book was released on 2011-01-28 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades there has been a prolific increase in research and development in area of heat transfer, heat exchangers and their associated technologies. This book is a collection of current research in the above mentioned areas and discusses experimental, theoretical and calculation approaches and industrial utilizations with modern ideas and methods to study heat transfer for single and multiphase systems. The topics considered include various basic concepts of heat transfer, the fundamental modes of heat transfer (namely conduction, convection and radiation), thermophysical properties, condensation, boiling, freezing, innovative experiments, measurement analysis, theoretical models and simulations, with many real-world problems and important modern applications. The book is divided in four sections : "Heat Transfer in Micro Systems", "Boiling, Freezing and Condensation Heat Transfer", "Heat Transfer and its Assessment", "Heat Transfer Calculations", and each section discusses a wide variety of techniques, methods and applications in accordance with the subjects. The combination of theoretical and experimental investigations with many important practical applications of current interest will make this book of interest to researchers, scientists, engineers and graduate students, who make use of experimental and theoretical investigations, assessment and enhancement techniques in this multidisciplinary field as well as to researchers in mathematical modelling, computer simulations and information sciences, who make use of experimental and theoretical investigations as a means of critical assessment of models and results derived from advanced numerical simulations and improvement of the developed models and numerical methods.

Handbook of Hygiene Control in the Food Industry

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Publisher : Woodhead Publishing
ISBN 13 : 0081001975
Total Pages : 758 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Handbook of Hygiene Control in the Food Industry by : John Holah

Download or read book Handbook of Hygiene Control in the Food Industry written by John Holah and published by Woodhead Publishing. This book was released on 2016-06-10 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Hygiene Control in the Food Industry, Second Edition, continues to be an authoritative reference for anyone who needs hands-on practical information to improve best practices in food safety and quality. The book is written by leaders in the field who understand the complex issues of control surrounding food industry design, operations, and processes, contamination management methods, route analysis processing, allergenic residues, pest management, and more. Professionals and students will find a comprehensive account of risk analysis and management solutions they can use to minimize risks and hazards plus tactics and best practices for creating a safe food supply, farm to fork. - Presents the latest research and development in the field of hygiene, offering a broad range of the microbiological risks associated with food processing - Provides practical hygiene related solutions in food facilities to minimize foodborne pathogens and decrease the occurrence of foodborne disease - Includes the latest information on biofilm formation and detection for prevention and control of pathogens as well as pathogen resistance

Boiling Heat Transfer

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Publisher : Elsevier
ISBN 13 : 1483291383
Total Pages : 629 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Boiling Heat Transfer by : R.T. Lahey Jr.

Download or read book Boiling Heat Transfer written by R.T. Lahey Jr. and published by Elsevier. This book was released on 2013-10-22 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the modern developments in boiling heat transfer and two-phase flow, and is intended to provide industrial, government and academic researchers with state-of-the-art research findings in the area of multiphase flow and heat transfer technology. Special attention is given to technology transfer, indicating how recent significant results may be used for practical applications. The chapters give detailed technical material that will be useful to engineers and scientists who work in the field of multiphase flow and heat transfer. The authors of all chapters are members of the CMR at Rensselaer, a research centre specializing in the state-of-the-art in multiphase science.

Particulate Fouling

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Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.:/5 (228 download)

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Book Synopsis Particulate Fouling by : Jonathan Middis

Download or read book Particulate Fouling written by Jonathan Middis and published by . This book was released on 1989 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Environmental Issues and Sustainable Development

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Publisher : BoD – Books on Demand
ISBN 13 : 1838809163
Total Pages : 400 pages
Book Rating : 4.8/5 (388 download)

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Book Synopsis Environmental Issues and Sustainable Development by : Suriyanarayanan Sarvajayakesavalu

Download or read book Environmental Issues and Sustainable Development written by Suriyanarayanan Sarvajayakesavalu and published by BoD – Books on Demand. This book was released on 2021-05-27 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, attention to climate change and its associated impacts on economic and social development has increased significantly. Extreme weather conditions worldwide are threatening the survival of sensitive species and habitats. The situation is so dire that governments, academia, and non-governmental organizations across the globe are actively working to meet the United Nations Sustainable Development Goals. This book enhances understanding of environmental changes and the relative response to the socio-economic challenges of development. It provides a comprehensive overview of the impact of environmental change on natural resources and the climate, as well as discusses waste management and sustainable solutions.

VDI Heat Atlas

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Publisher : Springer Science & Business Media
ISBN 13 : 3540778764
Total Pages : 1608 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis VDI Heat Atlas by : VDI Gesellschaft

Download or read book VDI Heat Atlas written by VDI Gesellschaft and published by Springer Science & Business Media. This book was released on 2010-07-21 with total page 1608 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 50 years, the Springer VDI Heat Atlas has been an indispensable working means for engineers dealing with questions of heat transfer. Featuring 50% more content, this new edition covers most fields of heat transfer in industrial and engineering applications. It presents the interrelationships between basic scientific methods, experimental techniques, model-based analysis and their transfer to technical applications.

Computational Fluid Dynamics

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Publisher : BoD – Books on Demand
ISBN 13 : 9535137905
Total Pages : 412 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Computational Fluid Dynamics by : Adela Ionescu

Download or read book Computational Fluid Dynamics written by Adela Ionescu and published by BoD – Books on Demand. This book was released on 2018-02-14 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the result of a careful selection of contributors in the field of CFD. It is divided into three sections according to the purpose and approaches used in the development of the contributions. The first section describes the "high-performance computing" (HPC) tools and their impact on CFD modeling. The second section is dedicated to "CFD models for local and large-scale industrial phenomena." Two types of approaches are basically contained here: one concerns the adaptation from global to local scale, - e.g., the applications of CFD to study the climate changes and the adaptations to local scale. The second approach, very challenging, is the multiscale analysis. The third section is devoted to "CFD in numerical modeling approach for experimental cases." Its chapters emphasize on the numerical approach of the mathematical models associated to few experimental (industrial) cases. Here, the impact and the importance of the mathematical modeling in CFD are focused on. It is expected that the collection of these chapters will enrich the state of the art in the CFD domain and its applications in a lot of fields. This collection proves that CFD is a highly interdisciplinary research area, which lies at the interface of physics, engineering, applied mathematics, and computer science.

Compact Heat Exchangers

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Publisher : CRC Press
ISBN 13 : 9781560320128
Total Pages : 798 pages
Book Rating : 4.3/5 (21 download)

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Book Synopsis Compact Heat Exchangers by : Alexander Louis London

Download or read book Compact Heat Exchangers written by Alexander Louis London and published by CRC Press. This book was released on 1990 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat exchangers are a crucial part of aerospace, marine, cryogenic and refrigeration technology. These essays cover such topics as complicated flow arrangements, complex extended surfaces, two-phase flow and irreversibility in heat exchangers, and single-phase heat transfer.