Author: Beth A. CooperPublisher:
ISBN:
Category : Heat
Languages : en
Pages : 330
Book Description
Modeling of Fluid Flow and Heat Transfer in a Packed Bed Reactor of Low Tube to Particle Diameter Ratio with Finite Element Analysis
Author: Beth A. CooperMasters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer Science & Business Media
ISBN: 1468451979
Category : Science
Languages : en
Pages : 407
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Computer Modeling of Fluid Flow and Heat Transfer in a Fixed Bed Reactor with Finite-element Analysis
Author: Mark Allan ApplegatePublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages : 178
Book Description
Multiphase Flow and Heat Transfer in Pebble Bed Reactor Core
Author: Shengyao JiangPublisher: Springer Nature
ISBN: 9811595658
Category : Science
Languages : en
Pages : 510
Book Description
This book introduces readers to gas flows and heat transfer in pebble bed reactor cores. It addresses fundamental issues regarding experimental and modeling methods for complex multiphase systems, as well as relevant applications and recent research advances. The numerical methods and experimental measurements/techniques used to solve pebble flows, as well as the content on radiation modeling for high-temperature pebble beds, will be of particular interest. This book is intended for a broad readership, including researchers and practitioners, and is sure to become a key reference resource for students and professionals alike.
Evaluation of the Classical Reaction Engineering Models in Terms of Mass Transport and Reaction Rate Distribution for Low Tube-to-particle Diameter Ratio Beds
Author: Florent AllainPublisher:
ISBN:
Category :
Languages : en
Pages : 172
Book Description
Abstract: Packed bed reactors are widely used in the chemicals industry and have been studied carefully in the last century. Several reaction engineering models have been developed in order to predict the behavior of such reactors under specified conditions, in order to assist in the sizing during an industrial process conception. These reactors can be categorized using different parameters, and the bed-to- particle diameter ratio - N - is one of them. It has been shown that this parameter influences greatly the transfer phenomena that occur in the bed, and that for ratios under 10, particular attention is needed when considering the wall effects. An important point that has to be evaluated is the accuracy of the actual chemical reaction engineering models when simulating such beds as it is valid to question the hypothesis of a pseudo-continuum model when considering a low bed-to-particle diameter ratio bed. Through high precision Computational Fluid Dynamics calculations, several beds of particles are modeled and studied in term of mass dispersion and reaction rate distribution. Two reaction engineering models - a simple pseudo-continuum model with effectiveness factor, and a model we refer to as "Single pellet" model - and several correlations regarding Peclet numbers are then evaluated under the same conditions in order to determine their accuracy and reliability for that particular kind of bed. Two beds of N = 5.96 and N = 7.99 are studied for dispersion phenomena, and the bed of N = 5.96 is studied for reaction rate distribution. It is shown that the pseudo-continuum model of dispersion stands valid for the higher N, but that none of the correlations we used were able to correctly predict the behavior of the N = 5.96 bed at any of the Reynolds number we considered, only giving close behaviors. We were confronted with some difficulties regarding the reaction simulation under Fluent, but some comparisons were successfully made regarding species and reaction rate distribution in the bed.
Applied Mechanics Reviews
Author: Modelling and Control of a Packed Bed Reactor
Author: Larry Cates WindesTheoretical Chemical Engineering Abstracts
Author: Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 954
Book Description
Wall Heat Transfer Modeling in Fixed Bed Reactor at High Pressure
Author: Hesham IbrahimPublisher: LAP Lambert Academic Publishing
ISBN: 9783843360647
Category :
Languages : en
Pages : 212
Book Description
Fixed bed tubular reactors are widely used in the chemical processing industry to carry out solid- catalyzed reactions. Such tubes have many hundreds of particle diameters long, but only a few across, facilitating radial heat loss to the tube wall. A knowledge of the effective radial heat transfer mechanisms through the wall and packing of fluid flowing through a single tube forms an important aspect of the design of catalytic reactors. Whereas, in these systems both reactor selectivity and velocity of reactions depend largely on bed temperature. Knowledge of temperature profile within the bed and heat removal rate or which has been added is essential to achieve reactor productivity and product homogeneity. In this book mathematical model is developed for predicted the radial temperature profiles within nonisothermal fixed bed gas reactor at high pressure and estimate the characteristic parameters of heat transport at these conditions. Also investigate of the parameters influenced on the wall heat transfer coefficient in a fixed bed reactor at high pressure including Reynolds number, pellet sizes and orientation of the particles ..etc.
Computational Flow Modeling for Chemical Reactor Engineering
Author: Vivek V. RanadePublisher: Elsevier
ISBN: 0080502296
Category : Technology & Engineering
Languages : en
Pages : 475
Book Description
This book describes how modeling fluid flow in chemical reactors may offer solutions that improve design, operation, and performance of reactors. Chemical reactors are any vessels, tubes, pipes, or tanks in which chemical reactions take place. Computational Flow Modeling for Chemical Reactor Engineering will show the reactor engineer how to define the specific roles of computational flow modeling, select appropriate tools, and apply these tools to link reactor hardware to reactor performance. Overall methodology is illustrated with numerous case studies.Industry has invested substantial funds in computational flow modeling which will pay off only if it can be used to realize significant performance enhancement in chemical reactors. No other single source exists which provides the information contained in this book.