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020 _a9789811046278
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020 _a9811046271
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050 4 _aQE599.A2
_bZ436 2017 EB
100 1 _aZhao, Tao.
245 1 0 _aCoupled DEM-CFD analyses of landslide-induced debris flows
_cTao Zhao.
264 1 _aSingapore
_bSpringer
_c[2017]
264 4 _c2017
300 _a1 recurso en línea
_bilustraciones
336 _aTexto
_btxt
_2rdacontent
337 _aelectrónico
_bc
_2rdamedia
338 _arecurso electrónico
_bcr
_2rdacarrier
347 _atext file
_bPDF
500 _aSpringerLink
_bSpringer Engineering eBooks 2017 English+International
504 _aIncluye referencias bibliográficas
505 0 _aPreface; 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 _a2.1 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 _a3.3.1 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 _a3.4.10 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 _a4.6 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.
520 3 _aThis 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.
650 7 _aVolcanes
_2embne
_0(OCoLC)fst00888763
_0
_9140454
856 4 0 _uhttps://go.openathens.net/redirector/universidadeuropea.es?url=http://link.springer.com/10.1007/978-981-10-4627-8
_zAcceso a este recurso digital (usuarios Universidad Europea de Madrid)
988 _aEBOOK, asignarmaterias, EBSPRINGER_2017D
998 _b02/2018
_dz
_e-
_zSI
999 _c96070
_d96070
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