●1 Introduction
1.1 Blast furnace ironmaking process
1.2 Raceway zone
1.2.1 Blast furnace raceway
1.2.2 Effect of lateral gas inlet and its stability on raceway
1.3 Thermo-chemical behaviors of iron ore particles in BF
1.3.1 Softening and melting down behaviors
1.3.2 Particle scale reduction behaviors
1.4 Mathematical modelling and numerical approaches for gas-solid flow
1.4.1 TFM and CFD-DEM
1.4.2 CFD-DEM model
1.4.3 Heat transfer models based on CFD-DEM
1.4.4 Gas-solid reaction models
1.5 Mixed layer
1.5.1 Structure and nature of mixed layer
1.5.2 Effect of layer structure
1.5.3 Effect of particle size ratio
1.6 Summary and objectives
2 Discrete particle modelling of lateral jets into a packed bed and micromechanical analysis of the stability of raceways
2.1 Introduction
2.2 Model description
2.3 Simulation conditions
2.4 Results and discussion
2.4.1 Formation of different flow zones and characteristics of different flow states
2.4.2 Effect of bed geometry
2.4.3 Solid velocity at the interface of the funnel and the quasi-static flow zones
2.4.4 Phase diagram based on particle and gas velocities
2.4.5 Effect of discharging settings
2.5 Conclusions
3 Validation of CFD-DEM model for iron ore reduction at particlelevel and parametric study
3.1 Introduction
3.2 Model description
3.3 Simulation conditions
3.4 Results and discussion
3.4.1 Model validation
3.4.2 Effect of gas film resistance (GFR)
3.4.3 Effect of operation parameters
3.5 Conclusions
4 DEM-based virtual experimental blast furnace: A quasi-steady state model
4.1 Introduction
4.2 Model description
4.2.1 Assumptions and treatments in the present model
4.2.2 Numerical solution procedure
4.3 Simulation conditions
4.4 Results and discussion
4.4.1 Different flow zones
4.4.2 Gas and solid temperatures
4.4.3 Characteristics of the CZ and gas utilization
4.4.4 The effect of iron ore properties
4.5 Conclusions
5 A process scaling approach for CFD-DEM modelling of thermochemical behaviors in moving bed reactor
5.1 Introduction
5.2 Model description
5.2.1 Governing equations for discrete solid particles
5.2.2 Governing equations for gas phase
5.2.3 Process scaling and time scales
5.2.4 Derivation of dimensionless governing equations and dimensionless numbers
5.2.5 Scaling correlations, treatments and assumptions
5.3 Simulation conditions
5.4 Results and discussion
5.4.1 Gas-solid flow
5.4.2 Heart transfer
5.4.3 Chemical reactions
5.4.4 Discussion
5.5 Conclusions
6 A transient discrete element method-based virtual experimental blast furnace model
6.1 Introduction
6.2 Model description
6.2.1 Scaling correlations and assumptions
6.2.2 Numerical solution strategy
6.3 Simulation conditions
6.4 Results and discussion
6.4.1 Evolution of the process from an initial state to a steady one
6.4.2 Comparison of the predictions with those of experiments and a CFD BF model
6.4.3 Transient information of iron ore and coke particles
6.4.4 Comparison of process performance indicators
6.5 Conclusions
7 Numerical investigation of mixed layer effect on permeability in a dynamic blast furnace
7.1 Introduction
7.2 Model description
7.3 Simulation conditions
7.4 Results and discussion
7.4.1 General characteristics of mixed layer
7.4.2 The effect of mixed layer on porosity distribution
7.4.3 The effect of mixed layer on pressure drop
7.5 Conclusions
8 Conclusions and further studies
8.1 Conclusions
8.2 Future work
References

本書針對高爐煉鐵由於理論認識不充分、缺乏可靠有效的研究手段而造成實際應用過分依賴實踐經驗的情況，基於國際高爐模擬現狀，提出了利用CFD（計算流體力學模型）-DPS（離散顆粒模型）耦合方法建立高爐過程數值仿真模型，並采用不同實驗數據對其進行全面驗證，最終利用該高爐數學模型更深刻認識高爐和制定實際應用策略。本書共設置八章內容，繫統介紹了基於CFD-DPS方法高爐多尺度多相流數學模型的開發並對高爐內部顆粒尺度現像進行了數值解析。