声明
Chapter 1 Introduction
1.1Introduction of Barite Sag
1.2 Literature Review
1.2.1API Definition of Barite Sag
1.2.2Boycott Phenomena
1.2.3Influence of Drilling-Process Variableson Barite Sag
1.2.4Influence of Drilling Fluid Properties on Barite Sag
1.2.5Modeling of Particle Settling
1.2.6Modeling and Simulation of Barite Sag
1.3Research Content
1.4 Approach
1.4.1Horizontal Pipe Configuration
1.4.2Annular Configuration
1.5 Study Output
Chapter 2 Theoretical Background
2.1 Introduction
2.2Simulation Methods
2.2.1Computational Fluid Dynamics (CFD)
2.2.2Discrete Element Method (DEM)
2.2.3CFD-DEM Coupling
2.3Horizontal Pipe Configuration
2.3.1Mass Balance
2.3.2Momentum Balance
2.3.3Dispersed Phase Viscosity
2.3.4Interphase Momentum Transfer
2.3.5Solid Pressure
2.3.6 Discretization
2.4 Annular Configuration
2.4.1Governing Equations for Fluid Flow
2.4.2Governing Equations for Particle Flow
2.4.3 DEM Particle Time Scala
Chapter 3 Numerical Simulation
3.1 Introduction
3.2Barite Particle Size Distribution
3.3Horizontal Pipe Configuration
3.3.1Model Geometry and Mesh
3.3.2Simulation Conditions
3.4 Annular Configuration
3.4.1Model Geometry and Mesh
3.4.2Simulation Conditions
Chapter 4 Results and Discussion
4.1 Introduction
4.2Horizontal Pipe Configuration
4.2.1Validation of CFD Model
4.2.2Discussion of the CFD Model
4.3Annular Configuration
4.3.1Discussion of the 3D CFD Model
Chapter 5 Conclusion and Further Works
5.1 Conclusions
5.2Further Works
Nomenclature
Appendices
A.1 Brief on Multiphase Flows
参考文献
Academic Achievements
致谢
