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Author : Roy Jackson
Release : 2000-09-04
Genre : Mathematics
Kind : eBook
Book Rating : 220/5 ( reviews)
Book Synopsis The Dynamics of Fluidized Particles by : Roy Jackson
Download or read book The Dynamics of Fluidized Particles written by Roy Jackson. This book was released on 2000-09-04. Available in PDF, EPUB and Kindle. Book excerpt: This 2000 book provides a careful and critical development of the equations which describe the motion of fluid-particle mixtures.
Author : L.G. Gibilaro
Release : 2001-10-03
Genre : Technology & Engineering
Kind : eBook
Book Rating : 631/5 ( reviews)
Book Synopsis Fluidization Dynamics by : L.G. Gibilaro
Download or read book Fluidization Dynamics written by L.G. Gibilaro. This book was released on 2001-10-03. Available in PDF, EPUB and Kindle. Book excerpt: Fluidization Dynamics has been written for students and engineers who find themselves involved with problems concerning the fluidized state. It presents an analysis that focuses directly on the problem of predicting the fluid dynamic behaviour of a proposed fluidized system for which empirical data is limited or unavailable. The second objective is to provide a treatment of fluidization dynamics that is readily accessible to the non-specialist. The linear approach adopted in this book, starting with the formulation of predictive expressions for the basic forces that act on a fluidized particle, offers a clear way into the theory. The incorporation of the force terms into the conservation equations for mass and momentum and subsequent applications are presented in a manner that requires only the haziest recollection of elementary fluid-dynamics theory. The analyses presented in this book represent a body of research that has appeared in numerous publications over the last 20 years. L.G. Gibilaro has taken the opportunity to reorder much of the material in the light of subsequent knowledge, to correct minor errors and inconsistencies and to add detail and clarification where necessary. This material helps to form the basis for university course modules in engineering and applied science at undergraduate and graduate level, as well as focused, post-experienced courses for the process, and allied industries. · Bridges the gulf between observed behaviour and fluid-dynamic theory· Clear account of basic theory of fluidization· Accessible treatment of fluidization analysis
Author : Adonis C. Stephanakis
Release : 1980
Genre : Fluidization
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Fluid Dynamics in a Two Dimensional Fluidized Bed of Large Particles by : Adonis C. Stephanakis
Download or read book Fluid Dynamics in a Two Dimensional Fluidized Bed of Large Particles written by Adonis C. Stephanakis. This book was released on 1980. Available in PDF, EPUB and Kindle. Book excerpt: Observation shows that bubbles in large particle fluidized beds behave quite differently from beds of fine particles. They expand and can grow faster than they rise. Bubbles in fine particle beds seem to grow primarily by coalescence, while in large particle beds they are observed to grow mainly without coalescence. The aim of this study was to gain a better insight into bubble behavior in fluidized beds of intermediate and large particles (particle diameter greater than 0.4 mm), and understand the cause of the observed bubble growth. In the theoretical part of this work it is shown that emulsion voidage invariability, incompressible viscous gas flow and potential solids flow assumed by existing theoretical two-phase models cannot account for the observed gas accumulation within bubbles. A simplified theoretical form for the gas accumulation rate in a cylindrical bubble is developed. It is based on different areas of gas inflow and outflow at the bubble boundary, and on the fact that the emulsion voidages above and below the bubble are different. It was shown that voidage variations in the emulsion phase around a bubble are important to bubble growth considerations. The experimental cases analyzed for single growing two dimensional bubbles indicate a higher voidage at the wake region, than the voidage at the nose of the bubble. It was found that a relatively small difference in emulsion voidage above and below the bubble can cause significant gas accumulation within the bubble reaching values comparable to the gas throughflow. Finally the movement of bubbles in the vicinity of an immersed tube and pressure-time curves representing the slow bubble and rapid bubble growth regime, and the transition range are analyzed in order to identify important bubble behavior characteristics. An experimental set up was developed making possible simultaneous permanent recording of the two-dimensional bubble behavior and instantaneous pressure data acquisition at multiple locations in an area under study. Lapsed cinematography and a special circuit activating the data acquisition system was used. The experimental set up enabled the collection of a large amount of data which gave valuable information about fluid dynamic behavior in the vicinity of an immersed tube. Experiments were performed at atmospheric pressure and room temperature in a two-dimensional fluidized bed with an immersed 50.8.mm (2 in) in diameter internal located at a height 0.35 m above the distributor plate. Glass, sand and dolomite particles with mean surface particle diameters of 0.65 to 2.6 mm were used. Superficial air velocities used spanned a region from well below minimum fluidization conditions to 2.82 m/s.
Author : Z. Zapryanov
Release : 2013-03-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 551/5 ( reviews)
Book Synopsis Dynamics of Bubbles, Drops and Rigid Particles by : Z. Zapryanov
Download or read book Dynamics of Bubbles, Drops and Rigid Particles written by Z. Zapryanov. This book was released on 2013-03-09. Available in PDF, EPUB and Kindle. Book excerpt: 1. Objective and Scope Bubbles, drops and rigid particles occur everywhere in life, from valuable industrial operations like gas-liquid contracting, fluidized beds and extraction to such vital natural processes as fermentation, evaporation, and sedimentation. As we become increasingly aware of their fundamental role in industrial and biological systems, we are driven to know more about these fascinating particles. It is no surprise, therefore, that their practical and theoretical implications have aroused great interest among the scientific community and have inspired a growing number of studies and publications. Over the past ten years advances in the field of small Reynolds numbers flows and their technological and biological applications have given rise to several definitive monographs and textbooks in the area. In addition, the past three decades have witnessed enormous progress in describing quantitatively the behaviour of these particles. However, to the best of our knowledge, there are still no available books that reflect such achievements in the areas of bubble and drop deformation, hydrodynamic interactions of deformable fluid particles at low and moderate Reynolds numbers and hydrodynamic interactions of particles in oscillatory flows. Indeed, only one more book is dedicated entirely to the behaviour of bubbles, drops and rigid particles ["Bubbles, Drops and Particles" by Clift et al. (1978)] and the authors state its limitations clearly in the preface: "We treat only phenomena in which particle-particle interactions are of negligible importance. Hence, direct application of the book is limited to single-particle systems of dilute suspensions.
Author : Wen-Ching Yang
Release : 2003-03-19
Genre : Science
Kind : eBook
Book Rating : 360/5 ( reviews)
Book Synopsis Handbook of Fluidization and Fluid-Particle Systems by : Wen-Ching Yang
Download or read book Handbook of Fluidization and Fluid-Particle Systems written by Wen-Ching Yang. This book was released on 2003-03-19. Available in PDF, EPUB and Kindle. Book excerpt: This reference details particle characterization, dynamics, manufacturing, handling, and processing for the employment of multiphase reactors, as well as procedures in reactor scale-up and design for applications in the chemical, mineral, petroleum, power, cement and pharmaceuticals industries. The authors discuss flow through fixed beds, elutriation and entrainment, gas distributor and plenum design in fluidized beds, effect of internal tubes and baffles, general approaches to reactor design, applications for gasifiers and combustors, dilute phase pneumatic conveying, and applications for chemical production and processing. This is a valuable guide for chemists and engineers to use in their day-to-day work.
