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Cfd Simulations In Mechanically Stirred Tank And Flow Field Analysis
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Book Synopsis CFD Modeling of Complex Chemical Processes by : Li Xi
Download or read book CFD Modeling of Complex Chemical Processes written by Li Xi and published by MDPI. This book was released on 2021-09-01 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid dynamics (CFD), which uses numerical analysis to predict and model complex flow behaviors and transport processes, has become a mainstream tool in engineering process research and development. Complex chemical processes often involve coupling between dynamics at vastly different length and time scales, as well as coupling of different physical models. The multiscale and multiphysics nature of those problems calls for delicate modeling approaches. This book showcases recent contributions in this field, from the development of modeling methodology to its application in supporting the design, development, and optimization of engineering processes.
Book Synopsis Promising Techniques for Wastewater Treatment and Water Quality Assessment by : Iqbal Ahmed
Download or read book Promising Techniques for Wastewater Treatment and Water Quality Assessment written by Iqbal Ahmed and published by BoD – Books on Demand. This book was released on 2021-12-01 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the primary aspects of wastewater treatment processing techniques and designs, as well as water quality assessment. Chapters address microwave digestive techniques of wastewater treatment, advanced ozone oxidative and photo processes, and reactive distillation for various applications. The book is a useful resource for choosing applicable processing techniques and design parameters.
Book Synopsis Computational Fluid Mixing by : Elizabeth Marden Marshall
Download or read book Computational Fluid Mixing written by Elizabeth Marden Marshall and published by . This book was released on 2002 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid Dynamics by : Jiyuan Tu
Download or read book Computational Fluid Dynamics written by Jiyuan Tu and published by Butterworth-Heinemann. This book was released on 2018-01-26 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics: A Practical Approach, Third Edition, is an introduction to CFD fundamentals and commercial CFD software to solve engineering problems. The book is designed for a wide variety of engineering students new to CFD, and for practicing engineers learning CFD for the first time. Combining an appropriate level of mathematical background, worked examples, computer screen shots, and step-by-step processes, this book walks the reader through modeling and computing, as well as interpreting CFD results. This new edition has been updated throughout, with new content and improved figures, examples and problems. - Includes a new chapter on practical guidelines for mesh generation - Provides full coverage of high-pressure fluid dynamics and the meshless approach to provide a broader overview of the application areas where CFD can be used - Includes online resources with a new bonus chapter featuring detailed case studies and the latest developments in CFD
Book Synopsis CFD Analysis of Flow Field in a Mixing Tank with and Without Baffles by : Carlos F. Rezende
Download or read book CFD Analysis of Flow Field in a Mixing Tank with and Without Baffles written by Carlos F. Rezende and published by . This book was released on 1996 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A computational technique has been developed to study the fluid motion in a baffled and unbaffled mixing tank. This technique was devised for a cylindrical mixing tank using a Computational Fluid Dynamics code, FIDAP. Two model analyses are presented in this thesis: Unbaffled tank steady state analysis. Baffled tank transient state analysis. The method presented in this thesis uses subroutines incorporated into the CFD program to impose the boundary conditions associated with each baffle in the tank. These boundary conditions are rebuilt for each time step to capture the effects of the relative motion between the baffles and the impeller. In addition, the use of parameters in defining the coordinates of the geometry, the density of the mesh, and the fluid properties allow a straightforward automation of the model. This automation considerably reduces the time to create a new tank geometry from scratch. Furthermore, the automation permits rapid model development to be used in selecting optimal tanks and radial impeller combinations."--Abstract.
Book Synopsis CFD Modeling and Simulation in Materials Processing 2018 by : Laurentiu Nastac
Download or read book CFD Modeling and Simulation in Materials Processing 2018 written by Laurentiu Nastac and published by Springer. This book was released on 2018-01-10 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents contributions on computational fluid dynamics (CFD) modeling and simulation of engineering processes from researchers and engineers involved in the modeling of multiscale and multiphase phenomena in material processing systems. The following processes are covered: Additive Manufacturing (Selective Laser Melting and Laser Powder Bed Fusion); Ironmaking and Steelmaking (Ladle Metallurgical Furnace, EAF, Continuous Casting, Blown Converter, Reheating Furnace, Rotary Hearth Furnace); Degassing; High Pressure Gas Atomization of Liquid Metals; Electroslag Remelting; Electrokinetic Deposition; Friction Stir Welding; Quenching; High Pressure Die Casting; Core Injection Molding; Evaporation of Metals; Investment Casting; Electromagnetic Levitation; Ingot Casting; Casting and Solidification with External Field (electromagnetic stirring and ultrasonic cavitation) Interaction and Microstructure Evolution The collection also covers applications of CFD to engineering processes, and demonstrates how CFD can help scientists and engineers to better understand the fundamentals of engineering processes.
Book Synopsis CFD Modeling and Simulation in Materials Processing 2016 by : Lifeng Zhang
Download or read book CFD Modeling and Simulation in Materials Processing 2016 written by Lifeng Zhang and published by John Wiley & Sons. This book was released on 2016-02-08 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection explores computational fluid dynamics (CFD) modeling and simulation of engineering processes, with contributions from researchers and engineers involved in the modeling of multiscale and multiphase phenomena in material processing systems. The papers cover the following processes: Iron and Steelmaking (Tundish, Casting, Converter, Blast Furnace); Microstructure Evolution; Casting with External Field Interaction; and Smelting, Degassing, Ladle Processing, Mechanical Mixing, and Ingot Casting. The collection also covers applications of CFD to engineering processes, and demonstrates how CFD can help scientists and engineers to better understand the fundamentals of engineering processes.
Book Synopsis Computational Fluid Dynamics by : Xiaofeng Liu
Download or read book Computational Fluid Dynamics written by Xiaofeng Liu and published by . This book was released on 2019 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid Dynamics (CFD) Simulation of a Gas-Solid Fluidized Bed. Residence Time Validation Study by : Baru Debtera
Download or read book Computational Fluid Dynamics (CFD) Simulation of a Gas-Solid Fluidized Bed. Residence Time Validation Study written by Baru Debtera and published by GRIN Verlag. This book was released on 2021-11-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Academic Paper from the year 2021 in the subject Physics - Mechanics, , language: English, abstract: In this study, numerical simulations of a gas-solid fluidized bed reactor involving a two-fluid Eulerian multiphase model and incorporating the Kinetic Theory of Granular Flow (KTGF) for the solids phase have been performed using a commercial Computational Fluid Dynamics (CFD) software. The fluidized bed setup consists of 1,5 m height and 0,2 m diameter in which a series of experiments were performed using Helium tracer to determine the Residence Time Distribution (RTD) at various normalized velocities i.e., with different degrees of gas-solids mixing. Both 2D and 3D simulations of the fluidized bed reactor are performed. The main purpose of this study is to understand the hydrodynamic behavior of a gas-solid fluidized bed reactor through a framework of Eulerian multiphase model and to analyze hydrodynamic behavior of the gas-solids mixing.
Book Synopsis Scale-up in Chemical Engineering by : Marko Zlokarnik
Download or read book Scale-up in Chemical Engineering written by Marko Zlokarnik and published by John Wiley & Sons. This book was released on 2006-08-21 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the important task of the scale-up of processes from the laboratory to the production scale, this easily comprehensible and transparent book is divided into two sections. The first part details the theoretical principles, introducing the subject for readers without a profound prior knowledge of mathematics. It discusses the fundamentals of dimensional analysis, the treatment of temperature-dependent and rheological material values and scale-up where model systems or not available or only partly similar. All this is illustrated by 20 real-world examples, while 25 exercises plus solutions new to this edition practice and monitor learning. The second part presents the individual basic operations and covers the fields of mechanical, thermal, and chemical process engineering with respect to dimensional analysis and scale-up. The rules for scale-up are given and discussed for each operation. Other additions to this second edition are dimensional analysis of pelleting processes, and a historical overview of dimensional analysis and modeling, while all the chapters have been updated to take the latest literature into account. Written by a specialist with more than 40 years of experience in the industry, this book is specifically aimed at students as well as practicing engineers, chemists and process engineers already working in the field.
Book Synopsis Flow and Mixing Optimization of an Existing Biogas Plant through CFD Simulation and Velocity Measurements Prepared by : Obada Yaghi
Download or read book Flow and Mixing Optimization of an Existing Biogas Plant through CFD Simulation and Velocity Measurements Prepared written by Obada Yaghi and published by GRIN Verlag. This book was released on 2019-04-17 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2016 in the subject Engineering - Mechanical Engineering, grade: 94%, German Jordanian University (hosted by Hamburg University of Technology), language: English, abstract: This research project enables further development and improvement of the mixing efficiency in an existing biogas plant, by utilizing CFD simulation as well as a newly developed flow sensor in addition to supportive laboratory tests. The flow was analyzed considering the following variables: The mixing time, the Dry Matter (DM) content, the positioning of the agitators and how it can be related to the amount of velocity dead-zones. The velocity measurements took place at the biogas plant of the company Ardestorfer Bioenergie GmbH in the district of Buxtehude. The current plant capacity is approximately 1.6 MWel using animals manure, energy crops as well as agricultural residuals. In order to be able to perform the CFD simulation, a complete 3D model had to be done of the examined fermenter and the mixing agitators. Moreover, the current setup including fluid properties, boundary and initial conditions had to be taken into consideration. Velocity measurements were used as a validation approach for the simulation results, furthermore to acquire an overview of the flow behavior over the investigated mixing period. Firstly, it was found that at higher DM content the flow seemed to be more stable, and the velocity values get quite higher at the examined points. Moreover, at higher DM content (9.35% compared with 8.8%) the velocity dead-zones seemed to be approximately 70% less. Secondly, another approach was considered to improve the mixing and to minimize the dead-zones by changing the position of the main agitator. The new scenario showed fewer dead-zones by approximately 65% according to the CFD model. Thirdly, at all scenarios and setups, the flow seemed to reach the maximum possible velocity, and rather motion distribution after 150-180 seconds. Showing no remarkable improvement after this period. The mentioned findings were concluded based on comparisons between different velocity measurements as well as CFD simulation results at different operating conditions and setups. Being able to offer proper recommendations for a better energy efficiency in terms of lower energy consumption and better mixing all over the fermenter.
Book Synopsis Design, Simulation and Optimization of Hydraulic Machinery by : Ling Zhou
Download or read book Design, Simulation and Optimization of Hydraulic Machinery written by Ling Zhou and published by Frontiers Media SA. This book was released on 2022-08-04 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid Dynamics (CFD) of Chemical Processes by : Young-Il Lim
Download or read book Computational Fluid Dynamics (CFD) of Chemical Processes written by Young-Il Lim and published by MDPI. This book was released on 2021-02-22 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Special Issue, one review paper highlights the necessity of multiscale CFD, coupling micro- and macro-scales, for exchanging information at the interface of the two scales. Four research papers investigate the hydrodynamics, heat transfer, and chemical reactions of various processes using Eulerian CFD modeling. CFD models are attractive for industrial applications. However, substantial efforts in physical modeling and numerical implementation are still required before their widespread implementation.
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.
Book Synopsis Advances of CFD in Fluid Machinery Design by : Robin Elder
Download or read book Advances of CFD in Fluid Machinery Design written by Robin Elder and published by John Wiley & Sons. This book was released on 2003-02-07 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past Computational Fluid Dynamics (CFD) was confined to large organisations capable of developing and supporting their own codes. But recently there has been a rapid increase in the availability of reasonably priced commercial codes, and many more industrial organisations are now able to routinely use CFD. Advances of CFD in Fluid Machinery Design provide the perfect opportunity to find out what industry is doing and this book addresses how CFD is now being increasingly used in the design process, rather than as a post-design analysis tool. COMPLETE CONTENTS Trends in industrial use of CFD Challenges and methodologies in the design of axial flow fans for high-bypass-ratio, gas turbine engines using steady and unsteady CFD A three-dimensional inverse method based on pressure loading for the design of turbomachinery blades Application of CFD to the design and analysis of axial and centrifugal fans and compressors The design and performance of a transonic flow deswirling system – an application of current CFD design techniques tested against model and full-scale experiments Recent developments in unsteady flow modelling for turbomachinery aeroelasticity Computational investigation of flow in casing treatments for stall delay in axial flow fans Use of CFD for the three-dimensional hydrodynamic design of vertical diffuser pumps Recommendations to designers for CFD pump impeller and diffuser simulations Three dimensional CFD – a possibility to analyse piston pump flow dynamics CFD analysis of screw compressor performance Prediction of aerothermal phenomena in high-speed discstator systems Use of CFD in the design of a shaft seal for high-performance turbomachinery Users and potential users, of CFD for the design of fluid machinery, managers, designers, and researchers working in the field of ‘industrial flows’, will all find Advances of CFD in Fluid Machinery Design a valuable volume discussing state-of-the-art developments in CFD.
Book Synopsis Numerical Characterization of Mechanical Stress and Flow Patterns in Stirred Tank Bioreactors by : Manely Eslahpazir Esfandabadi
Download or read book Numerical Characterization of Mechanical Stress and Flow Patterns in Stirred Tank Bioreactors written by Manely Eslahpazir Esfandabadi and published by Cuvillier Verlag. This book was released on 2013-06-24 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das Ziel der Arbeit bestand darin, die lokalen und globalen mechanischen Beanspruchungsparameter in einem Rührkesselbioreaktor mit Hilfe der numerischen Strömungssimulation (CFD) nachzubilden und die Ergebnisse mit experimentellen Daten der Pellet-kultivierung bzgl. Fluiddynamik und Rheolgie des rekombinanten Stammes A. niger SKAn1015 zu validieren. Ausgehend von der einphasigen Strömungssimulation eines 2L-Bioreaktors werden zunächst Simultionsdaten über Strömungsgeschwindigkeit und mechanische Beanspruchung diskutiert. Aßerdem erfolgt eine Validierung der einphasigen Simulationsdaten mit der Particle Image Velocimetry. In weiteren Untersuchungen wird die Strömungssimulation auch auf nicht-newtonsche Flüssigkeiten, so wie sie bei der Kultivierung filamentöser Pilze üblicherweise auftreten, mit dem Ostwald - de Waele-Ansatz erweitert und die mechanische Beanspruchung in Abhängigkeit zu den rheologischen Prozessparametern korreliert. Die Untersuchung des Einflusses unterschiedlicher Rührergeometrien auf die Strömungsfelder und die mechanische Beanspruchung mittels CFD bildet den Abschluss, so dass die Auswahl eines geeigneten Rührers für den Kultivierungsprozess mit schesensitiven biologischen Systemen eindeutig getroffen wird. Die Arbeit validiert die numerische Strömungssimulation in einem Bioreaktor mit experimentell gnerierten biologischen und fluiddynamischen Prozessdaten und gibt praktische Hinweise darüber, wie biotechnologische Prozesse mit filamentösen Mikroorganismen hinsichtlich der Minimierung der mechanischen Beanspruchung zu betreiben sind.
