About the book
Flows involving solid particles are ubiquitous in nature and industry alike. Such flows are found in pharmaceutical production, chemical industry, food and agricultural industries, energy production and in the environment. However, many unsolved problems remain. In order to be able to solve problems, granular flows need to be understood so their behavior can be controlled and predicted. Granular flows occur in a variety of multiphase systems involving diverse solid concentrations, and the flow regime ranges from static flows, to dense granular flows, to rapid granular flows. Therefore, it is a formidable challenge to derive a universal rheological model for diverse granular flows. Besides, granular flows vary dramatically considering particle shape, size, morphology, elasticity, gradation, etc. Distinctive patterns emerge thanks to particle segregation, clustering and localized flows, which are particularly pertinent to various engineering applications. In the recent decades advanced experimental techniques and novel numerical methods dedicated both to fundamental understanding of granular flows and realistic scale engineering systems have arisen. This book intends to provide the readers with a comprehensive overview of the state-of-in-art in theoretical, experimental and numerical approaches to granular flows. The unique feature of this book is a strong effort to extend concepts and models normally verified against simple flows to complex realistic granular flows, which often involves strong coupling between particles and surrounding fluids.