Tubular Combustion.

Tubular combustors are cylindrical tubes where flame ignition and propagation occur in a spatially confined, highly controlled environment, in a nearly flat, elongated geometry. This allows for some unique advantages where extremely even heat dispersion is required over a large surface while still m...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Ishizuka, Satoru
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Momentum Press, 2013.
Temas:
Tubes > Thermodynamics.
Combustion.
combustion.
NATURE > Fossils.
Combustion
Tubes > Thermodynamics
Tubular flame
cylindrical flame
axisymmetric flame
flame sheet
flame stretch
flame curvature
vortex
swirl
Lewis number
similar solution
asymptotic analysis
computational simulation
pressure diffusion
Raman spectroscopy
tubular flame structure
cellular instability
rapidly-mixed combustion
non-premixed combustion
liquid film combustor
microcombustor
tubular flame burners
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 1. Introduction / Satoru Ishizuka
  • 1.1 Background of tubular flame studies
  • 1.1.1 Aerodynamic straining
  • 1.1.2 Flame curvature
  • 1.1.3 Rotation
  • 1.1.4 Tubular flames
  • 1.2 Notable tubular flame characteristics
  • 1.2.1 Thermal advantage
  • 1.2.2 Aerodynamic advantage
  • 1.2.3 Lewis number effects
  • 1.3 Tubular flame studies
  • 1.3.1 Theoretical studies
  • 1.3.2 Computational simulations
  • 1.3.3 Experimental studies
  • 1.4 Relevant studies
  • 1.4.1 Tubular non-premixed, diffusion flame studies
  • 1.4.2 Miniature liquid-film combustors
  • 1.5 Practical application
  • 1.5.1 Prototype tubular flame burners
  • 1.5.2 Rapidly mixed tubular flame combustion
  • References.
  • 2. Theory of tubular flames / Tadao Takeno and Makihito Nishioka
  • 2.1 Introduction
  • 2.2 Theoretical formulation
  • 2.2.1 Model and assumptions
  • 2.2.2 Fundamental equations
  • 2.3 Similarity solution
  • 2.3.1 Introduction
  • 2.3.2 Equations to be solved
  • 2.4 Simplified model with one-step kinetics and simple transport properties
  • 2.4.1 Formulation
  • 2.4.2 Nondimensional system
  • 2.4.3 Incompressible flow system
  • 2.4.4 Flow field
  • 2.4.5 Concentration and temperature field
  • 2.4.6 Simplification for Le = 1
  • 2.4.7 Results for simplified model
  • 2.4.8 Discussions on results for simplified model
  • 2.5 Effects of variable density
  • 2.5.1 Model and assumptions
  • 2.5.2 Comparison with incompressible solutions
  • 2.5.3 Effects of injection velocity
  • 2.5.4 Effects of lewis number
  • 2.5.5 Discussions on the effects of variable density
  • 2.6 Asymptotic analysis
  • 2.6.1 Model and assumptions
  • 2.6.2 Nondimensional system
  • 2.6.3 Asymptotic analysis
  • 2.6.4 Approximate solutions
  • 2.6.5 Response curves
  • 2.6.6 Extinction conditions
  • 2.6.7 Numerical example
  • 2.6.8 Discussions
  • 2.6.9 Some concluding remarks
  • 2.7 Numerical study with full kinetics and exact transport properties
  • 2.7.1 Introduction
  • 2.7.2 Model and equations
  • 2.7.3 Reaction mechanism and transport properties
  • 2.7.4 Results and discussions
  • 2.7.5 Concluding remarks
  • 2.8 Final conclusions
  • References.
  • 3. Mathematical formulation and computational simulation of tubular flames / Yuyin Zhang, Huayang Zhu, Robert J. Kee
  • 3.1 Introduction
  • 3.2 Literature overview
  • 3.3 Mathematical formulation
  • 3.3.1 Similarity form
  • 3.3.2 Radial injection
  • 3.3.3 Tangential injection
  • 3.3.4 Practical considerations
  • 3.3.5 Computational procedure
  • 3.4 Model validation
  • 3.4.1 Tubular flame with a radial inlet flow
  • 3.4.2 Swirling tubular flame with a single inlet slot
  • 3.5 Flame structure and pressure diffusion
  • 3.5.1 Premixed propane-air flames
  • 3.5.2 Premixed methane-air flames
  • 3.5.3 Summary of pressure diffusion
  • 3.6 Potential technology applications
  • 3.7 Summary and conclusions
  • References.
  • 4. Raman spectroscopic measurements of tubular flames / Robert W. Pitz
  • 4.1 Introduction
  • 4.2 Raman scattering technique
  • 4.3 Tubular flame burner
  • 4.4 Raman scattering measurements in tubular flames
  • 4.4.1 Hydrogen-air tubular flames
  • 4.4.2 Methane-air tubular flames
  • 4.4.3 Propane-air tubular flames
  • 4.5 Cellular tubular flames
  • 4.5.1 Instabilities in tubular flames
  • 4.5.2 Raman scattering measurements in cellular tubular flames
  • References.
  • 5. Non-premixed tubular flames / Robert W. Pitz
  • 5.1 Introduction
  • 5.2 Numerical study of the non-premixed tubular flames
  • 5.3 Non-premixed opposed-flow tubular burner
  • 5.4 Raman scattering measurements in non-premixed tubular flames
  • 5.4.1 Hydrogen/air non-premixed tubular flames
  • 5.4.2 Hydrocarbon-air non-premixed tubular flames
  • 5.5 Cellular instabilities in non-premixed tubular flames
  • 5.5.1 Cellular instabilities in diffusion flames
  • 5.5.2 Cellular formation and extinction in non-premixed tubular flames
  • References.
  • 6. Tubular flame characteristics of miniature liquid film combustors / Derek Dunn-Rankin
  • 6.1 Introduction
  • 6.2 Brief review of some key features of a tubular flame
  • 6.3 Review of the key features of a fuel film combustor flame
  • 6.4 Examples of tubular flame behaviors in a fuel film combustor
  • 6.4.1 Original design
  • 6.4.2 Secondary air injection
  • 6.4.3 Swirler design and tubular flame
  • 6.5 Concluding remarks
  • References.
  • 7. Small-scale applications / Daisuke Shimokuri
  • 7.1. Introduction
  • 7.2. Flame quenching in a narrow channel
  • 7.2.1 Flame quenching in a nonrotating flow field
  • 7.2.2 Advantages using small-scale tubular flame burners
  • 7.2.3 Tubular flame in a small-diameter tube
  • 7.2.4 Effects of tube size on the tubular flame
  • 7.2.5 Critical tube diameter for a rotating flow field
  • 7.3 Development of small power sources using a tubular flame
  • References.
  • 8. Large-scale applications / Satoru Ishizuka
  • 8.1 Introduction
  • 8.1.1 Classification
  • 8.1.2 Flame diameter and length
  • 8.1.3 Rapidly mixed tubular flame combustion
  • 8.2 Wide flammable range
  • 8.2.1 BFG burners
  • 8.3 Fuel diversity
  • 8.3.1 Gaseous fuels
  • 8.3.2 Liquid fuels
  • 8.3.3 Solid fuels
  • 8.4 Compactness
  • 8.4.1 Fuel-processing system for polymer electrolyte fuel cell
  • 8.4.2 Hollow fastening bolt
  • 8.4.3 Superheated steam generator
  • 8.5 Geometry
  • 8.5.1 Flame stabilization
  • 8.5.2 Heating process
  • 8.5.3 Stirling engine
  • References
  • Index.

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