Gas Particle Flows
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Fundamentals of Gas Particle Flow
Fundamentals of Gas-Particle Flow is an edited, updated, and expanded version of a number of lectures presented on the "Gas-Solid Suspensions course organized by the von Karman Institute for Fluid Dynamics. Materials presented in this book are mostly analytical in nature, but some experimental techniques are included. The book focuses on relaxation processes, including the viscous drag of single particles, drag in gas-particles flow, gas-particle heat transfer, equilibrium, and frozen flow. It also discusses the dynamics of single particles, such as particles in an arbitrary flow, in a rotating gas, in a Prandtl-Meyer expansion, and in an oscillating flow. The remaining chapters of the book deal with the thermodynamics of gas-particle mixtures, steady flow through ducts, pressure waves, gas-particle jets, boundary layer, and momentum transfer. The experimental techniques included in this book present the powder feeders, the instrumentation on particle flow rate, velocity, concentration and temperature, and the measurement of the particle drag coefficient in a shock tube.
Gas-Particle and Granular Flow Systems
Gas-Particle and Granular Flow Systems: Coupled Numerical Methods and Applications breaks down complexities, details numerical methods (including basic theory, modeling and techniques in programming), and provides researchers with an introduction and starting point to each of the disciplines involved. As the modeling of gas-particle and granular flow systems is an emerging interdisciplinary field of study involving mathematics, numerical methods, computational science, and mechanical, chemical and nuclear engineering, this book provides an ideal resource for new researchers who are often intimidated by the complexities of fluid-particle, particle-particle, and particle-wall interactions in many disciplines. - Presents the most recent advances in modeling of gas-particle and granular flow systems - Features detailed and multidisciplinary case studies at the conclusion of each chapter to underscore key concepts - Discusses coupled methods of particle and granular flow systems theory and includes advanced modeling tools and numerical techniques
A Computational Model for Gas-particle Flows with Distributed Phase Interfaces
A new method of computing unsteady gas-particle flows with smoothly distributed phase interfaces is introduced to facilitate computations in which the gas flow a continuum about particles that have independent paths (non-continuum). However, a viscous-flow resistance is imposed such that flow restricted more strongly further inside the particle interface where the particle become solid. The resulting force on the moving particle from the viscous-flow resistance and gas pressure around the particle is used to determine its acceleration and trajectory. Two unsteady one-dimensional problems are solved to assess the advantages and limitations of the new model. The first involves the reflection of a shock wave from a closed duct end for which the wall has a stationary distributed interface, and the second involves the acceleration of a projectile in a duct by a high-pressure gas, for which the projectile has smoothly distributed interfaces with the gas.