
Fundamentals of Combustion Processes
by Mcallister, Sara; Chen, Jyn-yuan; Fernandez-pello, A. Carlos-
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Summary
Table of Contents
Fuels | p. 1 |
Types of Fuel | p. 1 |
Fuel Usage | p. 5 |
Basic Considerations of the Choice of Fuels | p. 6 |
Classification of Fuels by Phase at Ambient Conditions | p. 8 |
Identification of Fuel by Molecular Structure: International Union of Pure and Applied Chemistry (IUPAC) | p. 9 |
Some Related Properties of Liquid Fuels | p. 12 |
Exercises | p. 13 |
References | p. 13 |
Thermodynamics of Combustion | p. 15 |
Properties of Mixtures | p. 15 |
Combustion Stoichiometry | p. 17 |
Methods of Quantifying Fuel and Air Content of Combustible Mixtures | p. 19 |
Heating Values | p. 23 |
Determination of HHV for Combustion Processes at Constant Pressure | p. 24 |
Determination of HHV for Combustion Processes from a Constant-Volume Reactor | p. 27 |
Representative HHV Values | p. 29 |
Adiabatic Fiame Temperature | p. 31 |
Constant-Pressure Combustion Processes | p. 31 |
Comparison of Adiabatic Flame Temperature Calculation Methods | p. 36 |
Chapter Summary | p. 40 |
Exercises | p. 44 |
Chemical Kinetics | p. 49 |
The Nature of Combustion Chemistry | p. 50 |
Elementary Reactions: Chain Initiation | p. 51 |
Elementary Reactions: Chain Branching | p. 51 |
Elementary Reactions: Chain Terminating or Recombination | p. 52 |
Elementary Reactions: Chain Propagating | p. 52 |
Elementary Reaction Rate | p. 52 |
Forward Reaction Rate and Rate Constants | p. 52 |
Equilibrium Constants | p. 54 |
Simplified Model of Combustion Chemistry | p. 55 |
Global One-Step Reaction | p. 55 |
Pressure Dependence of Rate of Progress | p. 61 |
Heat Release Rate (HRR) | p. 61 |
Modeling of Chemical Kinetics with Detailed Description | p. 61 |
Partial Equilibrium | p. 65 |
Quasi-Steady State | p. 65 |
Exercises | p. 69 |
References | p. 73 |
Review of Transport Equations and Properties | p. 75 |
Overview of Heat and Mass Transfer | p. 75 |
Conservation of Mass and Species | p. 78 |
Conservation of Momentum | p. 80 |
Conservation of Energy | p. 80 |
Terms in the Conservation of Energy Equation | p. 80 |
Derivation of a 1-D Conservation of Energy Equation | p. 82 |
Normalization of the Conservation Equations | p. 84 |
Viscosity, Conductivity and Diffusivity | p. 87 |
References | p. 88 |
Ignition Phenomena | p. 89 |
Autoignition (Self-ignition, Spontaneous Ignition) Based on Thermal Theory | p. 89 |
Effect of Pressure on the Auto ignition Temperature | p. 93 |
Piloted Ignition | p. 95 |
Condensed Fuel Ignition | p. 98 |
Fuel Vaporization | p. 98 |
Important Physiochemical Properties | p. 99 |
Characteristic Times in Condensed Fuel Ignition | p. 100 |
Critical Heat Flux for Ignition | p. 106 |
Exercises | p. 108 |
References | p. 109 |
Premixed Flames | p. 111 |
Physical Processes in a Premixed Flame | p. 111 |
Derivation of Flame Speed and Thickness | p. 113 |
Measurements of the Flame Speed | p. 117 |
Structure of Premixed Flames | p. 119 |
Dependence of Flame Speed on Equivalence Ratio, Temperature and Pressure | p. 121 |
Dependence of Flame Thickness on Equivalence Ratio, Temperature and Pressure | p. 125 |
Flammability Limits | p. 125 |
Effects of Temperature and Pressure on Flammability Limits | p. 127 |
Flame Quenching | p. 127 |
Minimum Energy for Sustained Ignition and Flame Propagation | p. 130 |
Turbulent Premixed Flames | p. 133 |
Eddy Diffusivity | p. 133 |
Turbulent Flame Speed | p. 134 |
Summary | p. 135 |
Exercises | p. 136 |
References | p. 137 |
Non-premixed Flames (Diffusion Flames) | p. 139 |
Description of a Candle Flame | p. 139 |
Structure of Non-premixed Laminar Free Jet Flames | p. 140 |
Laminar Jet Flame Height (Lf) | p. 142 |
Empirical Correlations for Laminar Flame Height | p. 145 |
Burke-Schumann Jet Diffusion Flame | p. 147 |
Turbulent Jet Flames | p. 149 |
Lift-Off Height (h) and Blowout Limit | p. 151 |
Condensed Fuel Fires | p. 152 |
Exercises | p. 153 |
References | p. 154 |
Droplet Evaporation and Combustion | p. 155 |
Droplet Vaporization in Quiescent Air | p. 155 |
Droplet Vaporization in Convective Flow | p. 159 |
Droplet Combustion | p. 162 |
Initial Heating of a Droplet | p. 164 |
Effect of Air Temperature and Pressure | p. 166 |
Droplet Distribution | p. 171 |
Exercises | p. 174 |
Reference | p. 175 |
Emissions | p. 177 |
Negative Effects of Combustion Products | p. 177 |
Pollution Formation | p. 178 |
Parameters Controlling Formation of Pollutants | p. 179 |
CO Oxidation | p. 182 |
Mechanisms for NO Formation | p. 183 |
Controlling NO Formation | p. 189 |
Soot Formation | p. 190 |
Relation Between NO* and Soot Formation | p. 191 |
Oxides of Sulfur (SOx) | p. 193 |
Quantification of Emissions | p. 193 |
Exercises | p. 196 |
References | p. 198 |
Premixed Piston IC Engines | p. 199 |
Principles of SI Engines | p. 199 |
Thermodynamic Analysis | p. 201 |
Relationship between Pressure Trace and Heat Release | p. 206 |
Octane Number | p. 207 |
Deanition of Octane Rating | p. 207 |
Measurement Methods | p. 208 |
Fuel Preparation | p. 210 |
Ignition Timing | p. 213 |
Flame Propagation in SI Engines | p. 214 |
Modeling of Combustion Processes in IC Engines | p. 215 |
A Simplified Two-Zone Model of Engine Combustion | p. 216 |
Emissions and Their Control | p. 219 |
Three-Way Catalyst | p. 220 |
Gasoline Direct Injection (Gdi) Engines | p. 221 |
Exercises | p. 224 |
References | p. 226 |
Diesel Engines | p. 227 |
Overall Comparisons to SI Engines | p. 227 |
Advantages of Diesel Engines as Compared to SI Engines | p. 228 |
Disadvantages of Diesel Engines as Compared to SI Engines | p. 228 |
Thermodynamics of Diesel Engines | p. 229 |
Diesel Spray and Combustion | p. 230 |
Cetane Number | p. 235 |
Diesel Emissions | p. 237 |
Homogeneous Charge Compression Ignition (Hcci) | p. 238 |
HcciI Overview | p. 238 |
Hcci Emissions | p. 238 |
Challenges with Hcci | p. 240 |
p. 241 | |
Appendices | p. 243 |
Index | p. 299 |
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