Three Dimensional Transient Numerical Simulation Of Solids And Gas Flow In The Riser Section Of A Circulating Fluidized Beds PDF Download
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Author | : S. Benyahia |
Publisher | : |
Total Pages | : 6 |
Release | : 1999 |
Genre | : Chemical engineering |
ISBN | : |
Download Three-dimensional Transient Numerical Simulation of Solids and Gas Flow in the Riser Section of a Circulating Fluidized Beds Book in PDF, ePub and Kindle
Author | : Pannala, Sreekanth |
Publisher | : IGI Global |
Total Pages | : 500 |
Release | : 2010-09-30 |
Genre | : Computers |
ISBN | : 1615206523 |
Download Computational Gas-Solids Flows and Reacting Systems: Theory, Methods and Practice Book in PDF, ePub and Kindle
"This book provides various approaches to computational gas-solids flow and will aid the researchers, graduate students and practicing engineers in this rapidly expanding area"--Provided by publisher.
Author | : Iffat Tasneem Shaik Mohammad |
Publisher | : |
Total Pages | : 184 |
Release | : 2006 |
Genre | : Fluid dynamics |
ISBN | : |
Download CFD Simulation of Two-phase Flows in a Vertical Duct Book in PDF, ePub and Kindle
Author | : Young-Il Lim |
Publisher | : MDPI |
Total Pages | : 114 |
Release | : 2021-02-22 |
Genre | : Technology & Engineering |
ISBN | : 3039439332 |
Download Computational Fluid Dynamics (CFD) of Chemical Processes Book in PDF, ePub and Kindle
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 | : Guangxi Yue |
Publisher | : Springer Science & Business Media |
Total Pages | : 1186 |
Release | : 2010-07-28 |
Genre | : Science |
ISBN | : 3642026826 |
Download Proceedings of the 20th International Conference on Fluidized Bed Combustion Book in PDF, ePub and Kindle
The proceedings of the 20th International Conference on Fluidized Bed Combustion (FBC) collect 9 plenary lectures and 175 peer-reviewed technical papers presented in the conference held in Xi'an China in May 18-21,2009. The conference was the 20th conference in a series, covering the latest fundamental research results, as well as the application experience from pilot plants, demonstrations and industrial units regarding to the FBC science and technology. It was co-hosted by Tsinghua University, Southeast University, Zhejiang University, China Electricity Council and Chinese Machinery Industry Federation. A particular feature of the proceedings is the balance between the papers submitted by experts from industry and the papers submitted by academic researchers, aiming to bring academic knowledge to application as well as to define new areas for research. The authors of the proceedings are the most active researchers, technology developers, experienced and representative facility operators and manufacturers. They presented the latest research results, state-of-the-art development and projects, and the useful experience. The proceedings are divided into following sections: • CFB Boiler Technology, Operation and Design • Fundamental Research on Fluidization and Fluidized Combustion • C02 Capture and Chemical Looping • Gasification • Modeling and Simulation on FBC Technology • Environments and Pollutant Control • Sustainable Fuels The proceedings can be served as idea references for researchers, engineers, academia and graduate students, plant operators, boiler manufacturers, component suppliers, and technical managers who work on FBC fundamental research, technology development and industrial application.
Author | : Abbas Dadashi |
Publisher | : |
Total Pages | : 182 |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Numerical Simulation of Liquid-Solid Circulating Fluidized Beds Book in PDF, ePub and Kindle
Liquid-solid circulating fluidized bed (LSCFB) reactors are obtaining extensive attraction in the extraction process of functional proteins from industrial broth. A typical LSCFB is comprised of a riser, a downcomer, a liquid-solid separator, a top solids-return pipe and a bottom solids-return pipe. In light of the literature review conducted in this research, a detailed modeling of the protein extraction using an LSCFB ion-exchange system requires a microscopic study including hydrodynamic field, mass transfer and kinetics reactions. A computational fluid dynamics (CFD) model was developed to simulate the hydrodynamics of the two phase flow in an LSCFB riser. The model is based on Eulerian-Eulerian (E-E) approach incorporating the kinetic theory of granular flow. The predicted flow characteristics agree well with our earlier experimental data. Furthermore, the model can predict the residence time of both liquid and solid phases in the riser using a pulse technique. A numerical model was developed to predict the protein extraction process using an LSCFB ion exchange system. The model for the riser is an extension of the previous CFD hydrodynamic model for the riser incorporating the kinetics reaction. The model for the downcomer includes a one-dimensional mathematical model using the adsorption kinetics correlations. The numerical predictions were compared favorably with the experimental data from a lab-scale system. The model was used to investigate the effects of operating condition on the protein production rate and the system efficiency. For further study on the hydrodynamics in the downcomer of an LSCFB, the CFD technique was used to simulate the counter-current two phase flow in the downcomer. The model is based on E-E approach incorporating the kinetic theory of granular flow. The predicted results agree well with our earlier experimental data. Furthermore, it is shown that the bed expansion of the particles in the downcomer is directly affected by the superficial liquid velocity in downcomer and solids circulation rate. As results, it is demonstrated that the developed CFD model can be adapted to simulate and control the other applications of the LSCFB, such as wastewater treatment, petroleum and metallurgical industries.
Author | : Heimo Walter |
Publisher | : Springer |
Total Pages | : 851 |
Release | : 2017-04-18 |
Genre | : Technology & Engineering |
ISBN | : 3709148553 |
Download Numerical Simulation of Power Plants and Firing Systems Book in PDF, ePub and Kindle
The book comprises the fundamentals of the numerical simulation of fluid flows as well as the modelling of a power plant and plant components. The fundamental equations for heat and mass transfer will be prepared for the application in the numerical simulation. Selected numerical methods will be discussed in detail. The book will deal with the gas as well as with the water/steam flow. Regulation and controller, simplified models and hybrid models as well as the validation of measurement data are also included in the book.
Author | : |
Publisher | : |
Total Pages | : 400 |
Release | : 1948 |
Genre | : Mechanics, Applied |
ISBN | : |
Download Applied mechanics reviews Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 15 |
Release | : 2012 |
Genre | : |
ISBN | : |
Download MFIX Simulation of NETL/PSRI Challenge Problem of Circulating Fluidized Bed Book in PDF, ePub and Kindle
In this paper, numerical simulations of NETL/PSRI challenge problem of circulating fluidized bed (CFB) using the open-source code Multiphase Flow with Interphase eXchange (MFIX) are reported. Two rounds of simulation results are reported including the first-round blind test and the second-round modeling refinement. Three-dimensional high fidelity simulations are conducted to model a 12-inch diameter pilot-scale CFB riser. Detailed comparisons between numerical results and experimental data are made with respect to axial pressure gradient profile, radial profiles of solids velocity and solids mass flux along different radial directions at various elevations for operating conditions covering different fluidization regimes. Overall, the numerical results show that CFD can predict the complex gas-solids flow behavior in the CFB riser reasonably well. In addition, lessons learnt from modeling this challenge problem are presented.
Author | : Derek Dunn-Rankin |
Publisher | : MDPI |
Total Pages | : 196 |
Release | : 2019-11-20 |
Genre | : Technology & Engineering |
ISBN | : 3039214772 |
Download Cleaner Combustion Book in PDF, ePub and Kindle
This volume provides unique views of combustion from many technical and international research perspectives. Combustion science is often considered from its negative environmental impact, where we find, instead, that energy release from fuels of all kinds have promoted human endeavor throughout history. This volume tries to capture some of these positive features by showing a range of work examining unusual fuels and controlling the pollution from them.