Coupled DEM-CFD analyses of landslide-induced debris flows

This book reflects the latest research results in computer modelling of landslide-induced debris flows. The book establishes an understanding of the initiation and propagation mechanisms of landslides by means of numerical simulations, so that mitigation strategies to reduce the long-term losses fro...

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Bibliographic Details
Main Author: Zhao, Tao.
Format: eBook
Language: English
Published: Singapore : Springer, [2017]
Subjects:
Debris avalanches.
elektronické knihy
electronic books
ISBN: 9789811046278
9789811046261
Physical Description: 1 online resource : illustrations

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Table of contents

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100 1 |a Zhao, Tao. 
245 1 0 |a Coupled DEM-CFD analyses of landslide-induced debris flows /  |c Tao Zhao. 
264 1 |a Singapore :  |b Springer,  |c [2017] 
264 4 |c ©2017 
300 |a 1 online resource :  |b illustrations 
336 |a text  |b txt  |2 rdacontent 
337 |a počítač  |b c  |2 rdamedia 
338 |a online zdroj  |b cr  |2 rdacarrier 
504 |a Includes bibliographical references. 
505 0 |a Preface; Acknowledgements; Contents; Nomenclature; 1 Introduction to Landslides; 1.1 Background; 1.2 Terrestrial Landslides; 1.2.1 Classification and Characteristics; 1.2.2 Major Research on Terrestrial Landslides; 1.3 Submerged Landslides; 1.3.1 Classification and Characteristics; 1.3.2 Major Research on Submerged Landslides; 1.4 Model Testing-Granular Column Collapse; 1.5 Numerical Investigations; 1.5.1 The Finite Element Method; 1.5.2 The Smoothed Particle Hydrodynamics; 1.5.3 The Discrete Element Method; 1.5.4 The DEM-CFD Coupling Method; 2 Introduction to Discrete Element Method. 
505 8 |a 2.1 The Discrete Element Method2.1.1 Particle Motion; 2.1.2 The Particle-Particle Contact Model; 2.1.3 The Calculation of Stress in the DEM; 2.1.4 Coordination Number; 2.2 Model Validation; 2.2.1 Input Parameters of the DEM Model; 2.2.2 Determination of Numerical Time Step; 2.2.3 Numerical Simulation of Triaxial Tests; 2.2.3.1 Model Configuration; 2.2.3.2 Results; 2.2.4 Material Angle of Repose; 2.2.4.1 Results; 2.3 Conclusions; 3 Investigation of Dry Granular Flows; 3.1 The Granular Column Collapse Model; 3.2 Dimensional Analysis; 3.3 Numerical Simulations. 
505 8 |a 3.3.1 Deformation of the Granular Assembly3.3.2 Influence of Initial Column Aspect Ratio; 3.3.3 Influence of Model Size Ratio; 3.3.4 Influence of Column Characteristic Strain; 3.3.5 Influence of Material Internal Friction Angle; 3.4 Mechanical Analyses; 3.4.1 Evolution of Granular Velocity; 3.4.2 Granular Energy; 3.4.3 Linear Momentum; 3.4.4 Flux of Kinetic Energy; 3.4.5 Distribution of Kinetic Energy and Linear Momentum; 3.4.6 Evolution of Force Chains; 3.4.7 Distribution of Stress; 3.4.8 Distribution of Coordination Number; 3.4.9 Destination of Surface Grains. 
505 8 |a 3.4.10 Influence of Air Viscous Force3.5 Conclusions; 4 Introduction to the DEM-CFD Coupling Model; 4.1 Fluid-Solid Interaction; 4.2 Governing Equations of Fluid Flow; 4.2.1 Fluid Mass Conservation Law; 4.2.2 Fluid Momentum Conservation Law; 4.3 The Viscous Shear Stress; 4.3.1 Laminar Flow Regime; 4.3.2 Turbulent Flow Regime; 4.3.3 Near-Wall Treatment; 4.3.4 Initial Conditions; 4.4 The MPI Implementation and Data Exchange; 4.5 Fluid Flow Through a Porous Soil Sample; 4.5.1 Analytical Solution of Soil Permeability; 4.5.2 Numerical Model Configuration; 4.5.3 Laminar Flow; 4.5.4 Turbulent Flow. 
505 8 |a 4.6 Numerical Investigation of Granular Sedimentation4.6.1 The Settling of a Single Particle; 4.6.2 Batch Granular Sedimentation; 4.6.2.1 Segregation of Grains; 4.6.2.2 Density Profile of the Suspension; 4.6.2.3 Excess Pore Water Pressure and Effective Stress; 4.6.2.4 Energy of Solid Grains in the System; 4.6.2.5 Force Chain of the Sediments; 4.7 Conclusions; 5 Investigation of Submerged Debris Flows; 5.1 Model Configuration; 5.2 Physical Properties of Sediments; 5.3 Dimensional Analysis; 5.3.1 Discussion of the Dimensionless Groups; 5.3.2 Summary of the Dimensionless Groups. 
506 |a Plný text je dostupný pouze z IP adres počítačů Univerzity Tomáše Bati ve Zlíně nebo vzdáleným přístupem pro zaměstnance a studenty 
520 |a This book reflects the latest research results in computer modelling of landslide-induced debris flows. The book establishes an understanding of the initiation and propagation mechanisms of landslides by means of numerical simulations, so that mitigation strategies to reduce the long-term losses from landslide hazards can be devised. In this context, the book employs the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD) to investigate the mechanical and hydraulic behaviour of granular materials involved in landslides - an approach that yields meaningful insights into the flow mechanisms, concerning e.g. the mobilization of sediments, the generation and dissipation of excess pore water pressures, and the evolution of effective stresses. As such, the book provides valuable information, useful methods and robust numerical tools that can be successfully applied in the field of debris flow research. 
590 |a SpringerLink  |b Springer Complete eBooks 
650 0 |a Debris avalanches. 
655 7 |a elektronické knihy  |7 fd186907  |2 czenas 
655 9 |a electronic books  |2 eczenas 
776 0 8 |i Print version:  |a Zhao, Tao.  |t Coupled DEM-CFD analyses of landslide-induced debris flows.  |d Singapore : Springer, [2017]  |z 9789811046261  |z 9811046263  |w (OCoLC)981117454 
856 4 0 |u https://proxy.k.utb.cz/login?url=https://link.springer.com/10.1007/978-981-10-4627-8  |y Plný text 
992 |c NTK-SpringerENG 
999 |c 100112  |d 100112 
993 |x NEPOSILAT  |y EIZ 

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