Download or read book Computational Fluid Dynamics Simulation of Precipitation Processes written by Liguang Wang and published by . This book was released on 2004 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: First, an experimental and computational investigation of the effects of local fluid shear rate on the aggregation and breakage of [Difference] 10 [Mu]m latex spheres suspended in an aqueous solution undergoing laminar and turbulent Taylor-Couette flow was carried out, according to the following program. First, computational fluid dynamics (CFD) simulations were performed and the flow field predictions were validated with data from particle image velocimetry experiments. Subsequently, the quadrature method of moments (QMOM) was implemented into the CFD code to obtain predictions for mean particle size that account for the effects of local shear rate on the aggregation and breakage. These predictions were then compared with experimental data for latex sphere aggregates (using an in-situ optical imaging method) and with predictions using spatial average shear rates. The mean particle size evolution predicted by CFD and QMOM using appropriate kinetic expressions that incorporate information concerning the particle morphology (fractal dimension) and the local fluid viscous effects on aggregation collision efficiency matches well with the experimental data. Second, CFD simulation of turbulent reactive precipitation in a poorly micromixed plug-flow reactor has been investigated in this work. The predictions of multi-environment and transported PDF models are compared. For the first time, DQMOM is formulated and applied to approximate the composition PDF transport equation. When properly chosen, the resulting DQMOM correction terms enforce agreement between selected lower-order moments of the mixture-fraction PDF and the exact moment transport equations. Likewise, for reacting scalars, the multi-environment PDF model provides a closure for the chemical source term, and the DQMOM correction terms enforce the correct behave of the lower-order moments under the influence of turbulent diffusivity. Results for reactive precipitation show that the DQMOM-IEM model agrees closely with a transported PDF model. Since the multi-environment PDF model is much less computationally intensive than the transported PDF model, it is easy and extremely promising to couple the simple Eulerian-based multi-environment PDF models with a commercial CFD code for realistic industrial problems. Third, a novel algorithm, in-situ adaptive tabulation, has been implemented in a CFD code for the integration of reactive precipitation. A speed-up of [Difference]10 was achieved.

Download or read book Process Simulation of Technical Precipitation Processes The Influence of Mixing written by Metzger, Lukas and published by KIT Scientific Publishing. This book was released on 2018-03-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work develops and shows up methods to tackle multi-scale challenges in particle formation during precipitation crystallization. Firstly, molecular, micro- and meso-scale interactions in confined impinging jet mixers are investigated and simulatively predicted. Secondly, to build up on developed methods, macroscale as present for instance in stirred tank reactors is added to the considerations.

Download or read book Application of computational fluid dynamics techniques to the modelling of precipitation processes written by H. Wei and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Reactive Precipitation Processes Using Computational Fluid Dynamics written by Mohsen Hassan Jaber Al-Rashed and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Process Simulation of Technical Precipitation Processes The Influence of Mixing written by Lukas Metzger and published by . This book was released on 2020-10-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work develops and shows up methods to tackle multi-scale challenges in particle formation during precipitation crystallization. Firstly, molecular, micro- and meso-scale interactions in confined impinging jet mixers are investigated and simulatively predicted. Secondly, to build up on developed methods, macroscale as present for instance in stirred tank reactors is added to the considerations. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Download or read book Dynamic Flowsheet Simulation of Solids Processes written by Stefan Heinrich and published by Springer Nature. This book was released on 2020-06-20 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest advances in flowsheet simulation of solids processes, focusing on the dynamic behaviour of systems with interconnected solids processing units, but also covering stationary simulation. The book includes the modelling of solids processing units, for example for comminution, sifting and particle formulation and also for reaction systems. Furthermore, it examines new approaches for the description of solids and their property distributions and for the mathematical treatment of flowsheets with multivariate population balances.

Download or read book Computational Fluid Dynamics Simulation of Spray Dryers written by Meng Wai Woo and published by CRC Press. This book was released on 2016-11-03 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap in understanding between the spray drying industry and the numerical modeler on spray drying, Computational Fluid Dynamics Simulation of Spray Dryers: An Engineer’s Guide shows how to numerically capture important physical phenomena within a spray drying process using the CFD technique. It includes numerical strategies to effectively describe these phenomena, which are collated from research work and CFD industrial consultation, in particular to the dairy industry. Along with showing how to set up models, the book helps readers identify the capabilities and uncertainties of the CFD technique for spray drying. After briefly covering the basics of CFD, the book discusses airflow modeling, atomization and particle tracking, droplet drying, quality modeling, agglomeration and wall deposition modeling, and simulation validation techniques. The book also answers questions related to common challenges in industrial applications.

Download or read book written by and published by IOS Press. This book was released on with total page 10439 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computational Fluid Dynamics written by Xiaofeng Liu and published by . This book was released on 2019-05-16 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction, overview, and specific examples of computational fluid dynamics and their applications in the water, wastewater, and stormwater industry.

Download or read book Computational Fluid Dynamics Simulation of Spray Dryers written by Meng Wai Woo and published by CRC Press. This book was released on 2019-12-14 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap in understanding between the spray drying industry and the numerical modeler on spray drying, Computational Fluid Dynamics Simulation of Spray Dryers: An Engineer's Guide shows how to numerically capture important physical phenomena within a spray drying process using the CFD technique. It includes numerical strategies to effectively describe these phenomena, which are collated from research work and CFD industrial consultation, in particular to the dairy industry. Along with showing how to set up models, the book helps readers identify the capabilities and uncertainties of the CFD technique for spray drying. After briefly covering the basics of CFD, the book discusses airflow modeling, atomization and particle tracking, droplet drying, quality modeling, agglomeration and wall deposition modeling, and simulation validation techniques. The book also answers questions related to common challenges in industrial applications.

Download or read book Applications of Statistical Methods in Computational Fluid Dynamics for Precipitation and Combustion written by Alexander William Abboud and published by . This book was released on 2015 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BIWIC 2007 14th International Workshop on Industrial Crystallization written by A.E. Lewis and published by IOS Press. This book was released on 2007-08-31 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of crystallization holds many challenges, with the physical and chemical complexity of the crystallization process being core to the dynamic nature of the field. Exciting advances are currently being achieved in the areas of nanoparticle formation, product and particle design and methods of particle characterisation. There is also significant progress and innovation in the design, scale-up and control of crystallizers. These key developments are reflected in the session themes of the 14th BIWIC (Bremen International Workshop on Industrial Crystallization) with the technical programme incorporating a wide range of topics, such as; The formation and stabilisation of nano particles; Polymorphs and co-crystals in pharmaceutical preparation; Product and particle design; Kinetics of crystallization and measurement of crystal properties; Freeze, Antisolvent, Reactive and Melt crystallization; and Design, scale-up and control of crystallization processes at the industrial scale.

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

Download or read book Pore Scale Geochemical Processes written by Carl Steefel and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-09-25 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This RiMG (Reviews in Mineralogy & Geochemistry) volume includes contributions that review experimental, characterization, and modeling advances in our understanding of pore-scale geochemical processes. The volume had its origins in a special theme session at the 2015 Goldschmidt Conference in Prague. From a diversity of pore-scale topics that ranged from multi-scale characterization to modeling, this work summarizes the state-of-the-science in this subject. Topics include: modification of thermodynamics and kinetics in small pores. chemo-mechanical processes and how they affect porosity evolution in geological media. small angle neutron scattering (SANS) techniques. how isotopic gradients across fluid–mineral boundaries can develop and how these provide insight into pore-scale processes. Information on an important class of models referred to as "pore network" and much more. The material in this book is accessible for graduate students, researchers, and professionals in the earth, material, environmental, hydrological, and biological sciences. The pore scale is readily recognizable to geochemists, and yet in the past it has not received a great deal of attention as a distinct scale or environment that is associated with its own set of questions and challenges. Is the pore scale merely an environment in which smaller scale (molecular) processes aggregate, or are there emergent phenomena unique to this scale? Is it simply a finer-grained version of the "continuum" scale that is addressed in larger-scale models and interpretations? The scale is important because it accounts for the pore architecture within which such diverse processes as multi-mineral reaction networks, microbial community interaction, and transport play out, giving rise to new geochemical behavior that might not be understood or predicted by considering smaller or larger scales alone.

Download or read book Advances in Multiphase Flow and Heat Transfer written by Lixin Cheng and published by Bentham Science Publishers. This book was released on 2012-04-05 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Multiphase flow and heat transfer have found a wide range of applications in several engineering and science fields such as mechanical engineering, chemical and petrochemical engineering, nuclear engineering, energy engineering, material engineering, ocea"

Download or read book Advanced Computational Techniques for Heat and Mass Transfer in Food Processing written by Krunal M. Gangawane and published by CRC Press. This book was released on 2022-02-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational methods have risen as a powerful technique for exploring the system phenomena and solving real-life problems. Currently, there are two principle computational approaches for system analysis: continuous and discrete. In the continuous approach, the governing equations can be obtained by applying the fundamental laws, such as conservation of mass, momentum, and energy over an infinitesimal control volume. On the other hand, the discrete approach concentrates on mimicking the molecular movement within the system. Both approaches have pros and cons, and continuous development and improvement in the existing computational methods are ongoing. Advanced Computational Techniques for Heat and Mass Transfer in Food Processing provides, in a single source, information on the use of methods based on numerical and computational analysis as applied in food science and technology. It explores the use of various numerical/computational techniques for the simulation of fluid flow and heat and mass transfer within food products. Key Features: Explores various numerical techniques used for modeling and validation Describes the knowhow of numerical and computational techniques for food process operations Covers a detailed numerical or computational approach of the principles of heat and mass transfer in the food processing operation Discusses the detailed computational simulation procedure of the food operation Recent years have witnessed a rapid development in the field of computational techniques owing to its abundant benefit to the food processing industry. The relevance of advanced computational methods has helped in understanding the fundamental physics of thermal and hydrodynamic behavior that can provide benefits to the food processing industry in numerous applications. As a single information source for those interested in the use of methods based on numerical and computational analysis as applied in food science and technology, this book will ably serve any food academician or researcher in learning the advanced numerical techniques exploring fluid flow, crystallization, and other food processing operations.

Download or read book Kinetics of Water Rock Interaction written by Susan Brantley and published by Springer Science & Business Media. This book was released on 2007-12-29 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geochemical kinetics as a topic is now of importance to a wide range of geochemists in academia, industry, and government, and all geochemists need a rudimentary knowledge of the field. This book summarizes the fundamentals of geochemical kinetics with examples drawn especially from mineral dissolution and precipitation. It also encompasses discussion of high temperature processes and global geochemical cycle modeling. Analysis of textures of rocks, sediments, and mineral surfaces are incorporated throughout and provide a sub-theme of the book.