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Author : Fengliang Huang
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (51 download)
Download or read book CFD Simulation and Verification of Flow in Mixing Tanks written by Fengliang Huang and published by . This book was released on 1997 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carlos F. Rezende
Publisher :
ISBN 13 :
Total Pages : 412 pages
Book Rating : 4.:/5 (362 download)
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.
Author : Elizabeth Marden Marshall
Publisher :
ISBN 13 : 9780971953208
Total Pages : 154 pages
Book Rating : 4.9/5 (532 download)
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:
Author : National Aeronautics and Space Administration (NASA)
Publisher :
ISBN 13 : 9781467941204
Total Pages : 26 pages
Book Rating : 4.9/5 (412 download)
Download or read book Computational Fluid Dynamics (CFD) written by National Aeronautics and Space Administration (NASA) and published by . This book was released on 2010-10-25 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: For long-duration in-space storage of cryogenic propellants, an axial jet mixer is one concept for controlling tank pressure and reducing thermal stratification. Extensive ground-test data from the 1960s to the present exist for tank diameters of 10 ft or less. The design of axial jet mixers for tanks on the order of 30 ft diameter, such as those planned for the Ares V Earth Departure Stage (EDS) LH2 tank, will require scaling of available experimental data from much smaller tanks, as well designing for microgravity effects. This study will assess the ability for Computational Fluid Dynamics (CFD) to handle a change of scale of this magnitude by performing simulations of existing ground-based axial jet mixing experiments at two tank sizes differing by a factor of ten. Simulations of several axial jet configurations for an Ares V scale EDS LH2 tank during low Earth orbit (LEO) coast are evaluated and selected results are also presented. Data from jet mixing experiments performed in the 1960s by General Dynamics with water at two tank sizes (1 and 10 ft diameter) are used to evaluate CFD accuracy. Jet nozzle diameters ranged from 0.032 to 0.25 in. for the 1 ft diameter tank experiments and from 0.625 to 0.875 in. for the 10 ft diameter tank experiments. Thermally stratified layers were created in both tanks prior to turning on the jet mixer. Jet mixer efficiency was determined by monitoring the temperatures on thermocouple rakes in the tanks to time when the stratified layer was mixed out. Dye was frequently injected into the stratified tank and its penetration recorded. There were no velocities or turbulence quantities available in the experimental data. A commercially available, time accurate, multi-dimensional CFD code with free surface tracking (FLOW-3D from Flow Science, Inc.) is used for the simulations presented. Comparisons are made between computed temperatures at various axial locations in the tank at different times and those observed experimentally. The affect of various modeling parameters on the agreement obtained are assessed.
Author : Wain Ket Chong
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (987 download)
Download or read book Computational Fluid Dynamics (CFD) Simulation of Flow in Mixing Reactor written by Wain Ket Chong and published by . This book was released on 2016 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixing reactor is a common unit operation in many industrial processes. It is often encountered multiphase flow for mixing process. A computational fluid dynamics (CFD) model based on the mixture formulation for multiphase flow was created to study the mixing hydrodynamics of oil and water in a mixing reactor. This project aimed to develop a reliable CFD model that was able to predict the hydrodynamic properties like velocity or volume fraction. A grid dependency study was conducted to determine the effect of coarse, medium and fine meshes. The simulations were based on an experimental study where the mixing of oil and water occurred in the external loop. It had shown that the medium mesh was seem satisfactory to fulfill the evaluation criterion. The error between prediction of CFD model and experimental data was also within the tolerant range.
Author : Edward L. Paul
Publisher : John Wiley & Sons
ISBN 13 : 0471451444
Total Pages : 1450 pages
Book Rating : 4.4/5 (714 download)
Download or read book Handbook of Industrial Mixing written by Edward L. Paul and published by John Wiley & Sons. This book was released on 2004-02-17 with total page 1450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Industrial Mixing will explain the difference and uses of a variety of mixers including gear mixers, top entry mixers, side entry mixers, bottom entry mixers, on-line mixers, and submerged mixers The Handbook discusses the trade-offs among various mixers, concentrating on which might be considered for a particular process. Handbook of Industrial Mixing explains industrial mixers in a clear concise manner, and also: * Contains a CD-ROM with video clips showing different type of mixers in action and a overview of their uses. * Gives practical insights by the top professional in the field. * Details applications in key industries. * Provides the professional with information he did receive in school
Author : Da-Wen Sun
Publisher : CRC Press
ISBN 13 : 1420009214
Total Pages : 776 pages
Book Rating : 4.4/5 (2 download)
Download or read book Computational Fluid Dynamics in Food Processing written by Da-Wen Sun and published by CRC Press. This book was released on 2007-05-24 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: The implementation of early-stage simulation tools, specifically computational fluid dynamics (CFD), is an international and interdisciplinary trend that allows engineers to computer-test concepts all the way through the development of a process or system. With the enhancement of computing power and efficiency, and the availability of affordable CF
Author : Li Xi
Publisher : MDPI
ISBN 13 : 3036512667
Total Pages : 296 pages
Book Rating : 4.0/5 (365 download)
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.
Author : Baru Debtera
Publisher : GRIN Verlag
ISBN 13 : 3346547728
Total Pages : 26 pages
Book Rating : 4.3/5 (465 download)
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.
Author : Bengt Andersson
Publisher : Cambridge University Press
ISBN 13 : 1139505564
Total Pages : 203 pages
Book Rating : 4.1/5 (395 download)
Download or read book Computational Fluid Dynamics for Engineers written by Bengt Andersson and published by Cambridge University Press. This book was released on 2011-12-22 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid dynamics, CFD, has become an indispensable tool for many engineers. This book gives an introduction to CFD simulations of turbulence, mixing, reaction, combustion and multiphase flows. The emphasis on understanding the physics of these flows helps the engineer to select appropriate models to obtain reliable simulations. Besides presenting the equations involved, the basics and limitations of the models are explained and discussed. The book combined with tutorials, project and power-point lecture notes (all available for download) forms a complete course. The reader is given hands-on experience of drawing, meshing and simulation. The tutorials cover flow and reactions inside a porous catalyst, combustion in turbulent non-premixed flow, and multiphase simulation of evaporation spray respectively. The project deals with design of an industrial-scale selective catalytic reduction process and allows the reader to explore various design improvements and apply best practice guidelines in the CFD simulations.
Author : Andrzej Kraslawski
Publisher : Elsevier
ISBN 13 : 0080529445
Total Pages : 1175 pages
Book Rating : 4.0/5 (85 download)
Download or read book European Symposium on Computer Aided Process Engineering - 13 written by Andrzej Kraslawski and published by Elsevier. This book was released on 2003-05-07 with total page 1175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains papers presented at the 13th European Symposium on Computer Aided Process Engineering (ESCAPE-13). The ESCAPE symposia bring together scientists, students and engineers from academia and industry, who are active in the research and application of Computer Aided Process Engineering.The objective of ESCAPE-13 is to promote CAPE applications into new businesses and technologies by highlighting the use of computers and information technology tools in five specific areas: process design; process control and dynamics; modeling, simulation and optimization; applications in pulp and paper industry; and applications in biotechnology.Includes 190 papers selected from 391 submitted abstracts.All papers have been reviewed by 33 members of the international scientific community.
Author : Jiyuan Tu
Publisher : Butterworth-Heinemann
ISBN 13 : 0081012446
Total Pages : 500 pages
Book Rating : 4.0/5 (81 download)
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
Author : American Institute of Aeronautics and Astronautics
Publisher : AIAA (American Institute of Aeronautics & Astronautics)
ISBN 13 : 9781563472855
Total Pages : 0 pages
Book Rating : 4.4/5 (728 download)
Download or read book AIAA Guide for the Verification and Validation of Computational Fluid Dynamics Simulations written by American Institute of Aeronautics and Astronautics and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document defines a number of key terms, discusses fundamental concepts, and specifies general procedures for conducting verification and validation of computational fluid dynamics simulations. It's goal is to provide a foundation for the major issues and concepts in verification and validation. However, it does not recommend standards in these areas because a number of important issues are not yet resolved.
Download or read book APPLICATIONS OF CFD METHOD TO GAS MIXING ANALYSIS IN A LARGE-SCALED TANK. written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The computational fluid dynamics (CFD) modeling technique was applied to the estimation of maximum benzene concentration for the vapor space inside a large-scaled and high-level radioactive waste tank at Savannah River site (SRS). The objective of the work was to perform the calculations for the benzene mixing behavior in the vapor space of Tank 48 and its impact on the local concentration of benzene. The calculations were used to evaluate the degree to which purge air mixes with benzene evolving from the liquid surface and its ability to prevent an unacceptable concentration of benzene from forming. The analysis was focused on changing the tank operating conditions to establish internal recirculation and changing the benzene evolution rate from the liquid surface. The model used a three-dimensional momentum coupled with multi-species transport. The calculations included potential operating conditions for air inlet and exhaust flows, recirculation flow rate, and benzene evolution rate with prototypic tank geometry. The flow conditions are assumed to be fully turbulent since Reynolds numbers for typical operating conditions are in the range of 20,000 to 70,000 based on the inlet conditions of the air purge system. A standard two-equation turbulence model was used. The modeling results for the typical gas mixing problems available in the literature were compared and verified through comparisons with the test results. The benchmarking results showed that the predictions are in good agreement with the analytical solutions and literature data. Additional sensitivity calculations included a reduced benzene evolution rate, reduced air inlet and exhaust flow, and forced internal recirculation. The modeling results showed that the vapor space was fairly well mixed and that benzene concentrations were relatively low when forced recirculation and 72 cfm ventilation air through the tank boundary were imposed. For the same 72 cfm air inlet flow but without forced recirculation, the heavier benzene gas was stratified. The results demonstrated that benzene concentrations were relatively low for typical operating configurations and conditions. Detailed results and the cases considered in the calculations will be discussed here.
Author : Young-Il Lim
Publisher : MDPI
ISBN 13 : 3039439332
Total Pages : 114 pages
Book Rating : 4.0/5 (394 download)
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.
Author : Dominique Thévenin
Publisher : Springer Science & Business Media
ISBN 13 : 3540721533
Total Pages : 301 pages
Book Rating : 4.5/5 (47 download)
Download or read book Optimization and Computational Fluid Dynamics written by Dominique Thévenin and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The numerical optimization of practical applications has been an issue of major importance for the last 10 years. It allows us to explore reliable non-trivial configurations, differing widely from all known solutions. The purpose of this book is to introduce the state-of-the-art concerning this issue and many complementary applications are presented.
Author : Kevin J. Breisacher
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (699 download)
Download or read book Computational Fluid Dynamics (CFD) Simulations of Jet Mixing in Tanks of Different Scales written by Kevin J. Breisacher and published by . This book was released on 2010 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
