Computational Fluid Dynamics Applied to Waste-to-Energy Processes: A Hands-On Approach

Cover
COMPUTATIONAL
FLUID DYNAMICS
APPLIED TO
WASTE-TO-ENERGY
PROCESSES:
A Hands-On Approach
Copyright
Dedication
Preface
Acknowledgments
Section I: CFD workflow implementation
1
Introduction and overview of using computational fluid dynamics tools
	Introduction
	History of fluid mechanics
	CFD companies and resources
	Simulation workflow
	Hydrodynamics in a fluidized bed gasifier-A case study
	CFD applied to waste-to-energy processes
	Conclusions
	References
2
How to approach a real CFD problem-A decision-making process for gasification
	Introduction
	Problem identification
		Identifying the domain
	Preprocessing
		Creating a solid model
		Designing and creating a mesh
			Mesh sensitivity analysis
	Setting up the solver
	Mathematical model formulation
		Modeling approaches for multiphase flows
		General governing equations
		Hydrodynamic model
			Turbulent flow
		Chemical reactions model
			Devolatilization submodel
			Homogeneous gas-phase reactions submodels
			Heterogeneous reactions submodels
		Radiation model
	Solution setup and calculation tasks
	Model validation
	Postprocessing
	Conclusions, limitations, and future prospects
	References
Section II: Combustion modeling
3
Overview of biomass combustion modeling: Detailed analysis and case study
	Introduction
	Experimental setup
	Creating the geometry
	Creating the mesh
	Model considerations and implementation
	Results display
	NOx formation
	Final remarks
	References
4
Overview of biomass gasification modeling: Detailed analysis and case study
	Introduction
	Problem specification
	Creating the geometry
	Meshing the geometry
	Setting-up the solver
	Postprocessing
	Final remarks
	References
5
Gasification optimization using CFD combined with Design of Experiments
	Introduction
	Experimental set-up and substrates characterization
	Experimental design
		Some considerations
	Discussion
		Design of Experiments-Single optimization
		Robustness
			Some insights about Monte Carlo
			Robust operating conditions
			Some final thoughts
	Conclusions
	References
Section III: Gasification modeling
6
Advanced topics-Customization
	Introduction
	Sample function
	Interpreting and compiling UDF
	Creating a custom field functions
	References
7
Advanced topics-Postprocessing
	Introduction
	Problem description
	Solution display in CFD-Post application
	Creating an animation video
	Final remarks
	Reference
Appendix
	Appendix A
		Mathematical model
			Mass balance model
			Momentum equations
			Turbulence model
			Granular Eulerian model
			Granular Eulerian model
				Devolatilization
				Homogeneous gas-phase reactions
				Species transport equations
				Heterogeneous reaction rate
			Energy conservation
	Appendix B
		Mathematical model
			Energy conservation
			Momentum model
			Mass balance model
			Turbulence model
			Granular Eulerian model
			Chemical reactions model
				Pyrolysis
	References
Index
Back Cover