Download or read book Gas liquid Flow in a Rectangular Partially Aerated Bubble Column written by M. Elena Diaz and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Process Design Simulation and Optimization written by Jean-Pierre Corriou and published by MDPI. This book was released on 2021-02-19 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a series of articles devoted to modeling, simulation, and optimization of processes, mainly chemical. General methods for process modeling and numerical simulation are described with flowsheeting. Population balances are addressed in detail with application to crystal production; energy saving is frequently optimized, including exergy analysis. The coupling between process simulation and computational fluid dynamics is studied for air classification and bubble columns. Pressure swing adsorption, reactive distillation, and nanofiltration are explained in general and applied to particular processes. The synthesis of carbon dots is solved by the design of experiments method. A safety study addresses the consequences of gas explosion.
Download or read book Fundamentals of Gas liquid and Gas liquid solid Flow in a Bubble Column and in a Simple Shear Flow Device written by Wei Chen and published by . This book was released on 2006 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with fundamentals of gas-liquid and gas-liquid-solid flows in chemical and environmental industry and applications. The study contains three parts covering bubble size and its distribution in a bubble column, fluids flow and bubbly motion in a simple shear flow device and gas-liquid-solid flow in a column.
Download or read book Fermentation Processes Engineering in the Food Industry written by Carlos Ricardo Soccol and published by CRC Press. This book was released on 2013-03-27 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of modern tools of molecular biology and genetic engineering and new skills in metabolic engineering and synthetic biology, fermentation technology for industrial applications has developed enormously in recent years. Reflecting these advances, Fermentation Processes Engineering in the Food Industry explores the state of the art of the engineering technology aspects of fermentation processes in diverse food sectors. The book describes the benefits of fermented foods in human health in both dairy and non-dairy products and beverages. It examines applications of microalgae in the food industry and explains the application of metabolic engineering in the production of fermented food ingredients. Exploring a host of important topics in engineering fermentation processes, the book covers topics such as: Methods and techniques for the isolation, improvement, and preservation of the microbial cultures used in the food fermentation industry The fundamentals of fermentation processes, modes of fermentation, and the principles of upstream operation Physical and chemicals factors that affect fermentation processes Different types of fermenters employed in submerged and solid-state fermentation Unitary operations for solid-liquid separation, concentration, and drying of fermented foods Instrumentation and control of industrial fermentation processes The final chapter discusses the potential application of a biorefinery concept to add value to food industry wastes and presents a case study describing an integrated project in which the concept was applied. An essential reference for all food sector professionals, this volume surveys critical trends in the food, beverage, and additive industry and explores the sustainability of these processes.
Download or read book Multi level Modelling of Gas liquid Two phase Flow in a Bubble Column written by Esther Iris Viola van den Hengel and published by . This book was released on 2004 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lattice Boltzmann Simulations of Gas Liquid Flow in Bubble Columns written by K. Sankaranarayanan and published by . This book was released on 1999 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrodynamics and Gas Holdup in a Cocurrent Air water fiber Bubble Column written by Chengzhi Tang and published by . This book was released on 2005 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-liquid-fiber flows are widely found in various unit operations in the pulp and paper industry and similar flow conditions may be found in other industrials, such as wastewater treatment, food processing, biological organism production, and pharmaceutical manufacturing. Flocculated fiber suspensions are considered as mixtures of fiber and suspending liquid with network structures comprising floes and inter-floc regions. The fundamental mechanisms of the fiber influences on bubble motions and gas holdup in gas-liquid-fiber bubble columns are connected to the unique structure and properties of fiber suspensions. An experimental study is completed to investigate the hydrodynamics and gas holdup in a cocurrent air-water-fiber bubble column. Generally, gas holdup increases with increasing superficial gas velocity without a local maximum, decreases with increasing superficial liquid velocity, and changes nonlinearly with increasing fiber mass fraction. When flocculation is significant in the fiber suspension, gas holdup decreases with increasing fiber mass fraction. These trends are similar for all the studied fiber types. Gas distribution method significantly affects the gas holdup trends with increasing superficial liquid velocity or fiber mass fraction. Fiber type has a significant effect on gas holdup in the cocurrent air-water-fiber bubble column. Gas flow regimes in the air-liquid-fiber bubble column are identified based on the drift-flux model. Three gas flow regimes (i.e., dispersed bubble, vortical-spiral, and turbulent flow) are identified. When fiber mass fraction is higher than a certain value (which is a function of fiber type), the dispersed bubble flow regime disappears because bubble coalescence is enhanced at low superficial gas velocities by flocculating fibers. Superficial liquid velocity does not affect gas flow regime transition. A parameter (I[subfield c]) is identified to characterize the fiber effects on gas holdup in the air-water-fiber bubble column that satisfies the following condition: when this parameter is constant, the gas holdup in different fiber suspensions is generally similar at most operating conditions. A gas holdup model is developed for cocurrent air-water-fiber bubble flows based on the drift-flux model. The model coefficients are estimated with a nonlinear least square error curve fitting method using all data collected in the air-water-fiber system investigated in this study. The gas holdup model correlates gas holdup with superficial gas and liquid velocity and fiber type and mass fraction. The characterization parameter I[subfield c] is used to represent the effect of fiber type and mass fraction. The model reproduces most air-water-fiber system data within ±10% error. It also predicts the gas holdup data in air-water systems, which is not used in estimating the model coefficients, within ±10% error.
Download or read book Performance of Gas bubble Columns for Gas liquid Contacting written by Herman L. Shulman and published by . This book was released on 1948 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transport and Mixing in Gas liquid and Gas liquid solid Flows in Bubble Columns written by Debabrata Mitra-Majumdar and published by . This book was released on 1997 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Gas liquid Bubble Flow and Computational Fluid Dynamics Simulation of Interfacial Area Concentration in Bubble Columns written by Asem M. Al Jarrah and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was found that, in a fully developed turbulent flow bubble column, the liquid and gas velocity profiles far from the wall are approximately flat. Close to the wall, the velocity profiles are very sharp. In general, the velocity profiles for the gas and the liquid are similar to the velocity profile of one fluid flow in a pipe.
Download or read book A Study of Flow Patterns and Dissolution Kinetics in Bubble Columns written by and published by . This book was released on 1997 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research objectives were to: study liquid and gas phase flow patterns in a bubble column reactor by comparing observations made with reported observations and hydrodynamic models; study mixing of two miscible liquid solutions with and without solid suspension in a bubble column reactor; study the kinetics of dissolution of a reactive solid phase suspended in the liquid phase in a bubble column reactor; and calculate mass transfer coefficients and apparent reaction rate from suitable mathematical models. Observations and conclusions are summarized in a series of viewgraphs.
Download or read book Theoretical Chemical Engineering Abstracts written by and published by . This book was released on 1986 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bubbly Flows written by Martin Sommerfeld and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarises the outcom of a priority research programme: 'Analysis, Modelling and Computation of Multiphase Flows'. The results of 24 individual research projects are presented. The main objective of the research programme was to provide a better understanding of the physical basis for multiphase gas-liquid flows as they are found in numerous chemical and biochemical reactors. The research comprises steady and unsteady multiphase flows in three frequently found reactor configurations, namely bubble columns without interiors, airlift loop reactors, and aerated stirred vessels. For this purpose new and improved measurement techniques were developed. From the resulting knowledge and data, new and refined models for describing the underlying physical processes were developed, which were used for the establishment and improvement of analytic as well as numerical methods for predicting multiphase reactors. Thereby, the development, lay-out and scale-up of such processes should be possible on a more reliable basis.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1987 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct and Large Eddy Simulation IV written by Bernard Geurts and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 2001 DLES4 workshop. It describes and discusses state-of-the-art modeling and simulation approaches for complex flows. Fundamental turbulence and modeling issues but also elements from modern numerical analysis are at the heart of this field of interest.
Download or read book Journal of Applied Chemistry written by and published by . This book was released on 1963 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1954- include separately paged section called: Abstracts, formerly published in British abstracts B I and B II.
Download or read book Multiphase Flow Handbook Second Edition written by Efstathios Michaelides and published by CRC Press. This book was released on 2016-10-26 with total page 1559 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Multiphase Flow Handbook, Second Edition is a thoroughly updated and reorganized revision of the late Clayton Crowe’s work, and provides a detailed look at the basic concepts and the wide range of applications in this important area of thermal/fluids engineering. Revised by the new editors, Efstathios E. (Stathis) Michaelides and John D. Schwarzkopf, the new Second Edition begins with two chapters covering fundamental concepts and methods that pertain to all the types and applications of multiphase flow. The remaining chapters cover the applications and engineering systems that are relevant to all the types of multiphase flow and heat transfer. The twenty-one chapters and several sections of the book include the basic science as well as the contemporary engineering and technological applications of multiphase flow in a comprehensive way that is easy to follow and be understood. The editors created a common set of nomenclature that is used throughout the book, allowing readers to easily compare fundamental theory with currently developing concepts and applications. With contributed chapters from sixty-two leading experts around the world, the Multiphase Flow Handbook, Second Edition is an essential reference for all researchers, academics and engineers working with complex thermal and fluid systems.
