Flow Of Particulate Suspensions Through Constrictions

Reservoir Formation Damage, Second edition is a comprehensive treatise of the theory and modeling of common formation damage problems and is an important guide for research and development, laboratory testing for diagnosis and effective treatment, and tailor-fit- design of optimal strategies for mitigation of reservoir formation damage. The new edition includes field case histories and simulated scenarios demonstrating the consequences of formation damage in petroleum reservoirs Faruk Civan, Ph.D., is an Alumni Chair Professor in the Mewbourne School of Petroleum and Geological Engineering at the University of Oklahoma in Norman. Dr. Civan has received numerous honors and awards, including five distinguished lectureship awards and the 2003 SPE Distinguished Achievement Award for Petroleum Engineering Faculty. Petroleum engineers and managers get critical material on evaluation, prevention, and remediation of formation damage which can save or cost millions in profits from a mechanistic point of view State-of-the-Art knowledge and valuable insights into the nature of processes and operational practices causing formation damage Provides new strategies designed to minimize the impact of and avoid formation damage in petroleum reservoirs with the newest drilling, monitoring, and detection techniques

The book surveys the state-of-the-art methods that are currently available to model and simulate the presence of rigid particles in a fluid flow. For particles that are very small relative to the characteristic flow scales and move without interaction with other particles, effective equations of motion for particle tracking are formulated and applied (e.g. in gas-solid flows). For larger particles, for particles in liquid-solid flows and for particles that interact with each other or possibly modify the overall flow detailed model are presented. Special attention is given to the description of the approximate force coupling method (FCM) as a more general treatment for small particles, and derivations in the context of low Reynolds numbers for the particle motion as well as application at finite Reynolds numbers are provided. Other topics discussed in the book are the relation to higher resolution immersed boundary methods, possible extensions to non-spherical particles and examples of applications of such methods to dispersed multiphase flows.

The book presents an up-to-date review of turbulent two-phase flows with the dispersed phase, with an emphasis on the dynamics in the near-wall region. New insights to the flow physics are provided by direct numerical simuation and by fine experimental techniques. Also included are models of particle dynamics in wall-bounded turbulent flows, and a description of particle surface interactions including muti-layer deposition and re-suspension.

This book presents a broad overview of the issues related to the flow of particles in suspensions. Chapters cover the newest research in advanced theoretical approaches and recent experimental techniques. Topics include macroscopic transport properties, the mechanics of capsules and cells, hydrodynamic diffusion and phase separation.

This is targeted at professionals and graduate students working in disciplines where flow of adhesive particles plays a significant role.

A valuable source of reference on the current practices of analysis, design and construction of tunnels and underground structures in soft ground. This collection of reviewed papers covers a wide range of tunnelling practice, from deep excavations in Singapore to the construction of a new metro line in Barcelona. The international scope of the cont

This document describes an experimental investigation of two different particle systems under conditions of oscillatory flow. The 1st system being concentrated suspensions of non-motile particles and the 2nd system being dilute suspensions of swimming algae. This document focuses on the study of the jamming of concentrated suspensions of particles (primarily in oscillatory flows), and the response of swimming algae to oscillatory shear flows. The flow characteristics of concentrated colloidal and granular suspensions are known to display a variety of interesting flow characteristics such as shear thinning and discontinuous shear thickening. These depend on a wide range of parameters such as concentration, particle size, rate of deformation and many more. During the flow of concentrated suspensions, they can change from behaving like a fluid and flowing to behaving like a solid which can fracture or yield. Many aspects of this transition are still not understood. This phenomenon has important applications in process flow of slurries, the development of light weight bullet proof vests and as a dampening fluid within vehicle suspensions. This thesis shows that when concentrated colloidal and granular suspensions are subjected to oscillatory squeeze film flow, they display reversible local flow field distortions and macroscopic shape changes which are likely related to jamming. It highlights a range of unreported behaviours of suspensions in oscillatory squeeze film flows. This document also provides rheological data on the discontinuous shear thickening and jamming of a wide variety of different suspensions in both continuous and oscillatory shear flows. Swimming micro-organisms are currently used in a wide variety of health and cosmetic products. They are also being researched for use in the production of biodiesel. Swimming algae are grown within photo-bioreactors where their swimming characteristics can have a major impact on the reactors overall efficiency. Additionally a major issue in the production of swimming algae is the need for them to be concentrated using centrifugation which is energy intensive. This thesis shows that in oscillatory shear flows, gravitactic swimming algae can order their swimming directions in the vorticity directions of the oscillating flow field. This has potential applications in the development of a method to encourage micro-swimmers to self-concentrate. Suggestions of other investigations into the ordering behaviour of swimming micro-organisms are also provided. This document also displays a unique and cheap method for applying oscillatory squeeze film flows while allowing samples to be viewed underneath a microscope. It also makes suggestions on how this method could be enhanced. This device has applications in carrying out squeeze film tests to examine the rheological properties of fluids.

Particle Deposition and Aggregation: Measurement, Modelling and Simulation describes how particle deposition and aggregation can be measured, modeled, and simulated in a systematic manner. It brings together the necessary disciplines of colloid and surface chemistry, hydrodynamics, experimental methods, and computational methods to present a unified approach to this problem. The book is divided into four parts. Part I presents the theoretical principles governing deposition and aggregation phenomena, including a discussion of the forces that exist between particles and the hydrodynamic factors that control the movement of the particles and suspending fluid. Part II introduces methods for modeling the processes, first at a simple level (e.g. single particle-surface, single particle-single particle interactions in model flow conditions) and then describes the simulation protocols and computation tools which may be employed to describe more complex (multiple-particle interaction) systems. Part III summarizes the experimental methods of quantifying aggregating and depositing systems and concludes with a comparison of experimental results with those predicted using simple theoretical predictions. Part IV is largely based on illustrative examples to demonstrate the application of simulation and modeling methods to particle filtration, aggregation, and transport processes. This book should be useful to graduates working in process and environmental engineering research or industrial development at a postgraduate level, and to scientists who wish to extend their knowledge into more realistic process conditions in which the fluid hydrodynamics and other complicating factors must be accommodated.