Fundamentals of premixed turbulent combustion:
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Boca Raton, Fla. [u.a.]
CRC Press, Taylor & Francis Group
2013
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XXI, 525 S. Ill., graph. Darst. |
| ISBN: | 9781466510241 1466510242 |
Staff View
MARC
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| 245 | 1 | 0 | |a Fundamentals of premixed turbulent combustion |c Andrei Lipatnikov |
| 264 | 1 | |a Boca Raton, Fla. [u.a.] |b CRC Press, Taylor & Francis Group |c 2013 | |
| 300 | |a XXI, 525 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
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Record in the Search Index
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|---|---|
| adam_text | Contents
Preface
....................................................................................................................xiii
Acknowledgments
...................................................................................................xix
Author
.....................................................................................................................xxi
Chapter
1
General Knowledge on Reacting Gas Mixtures
...................................1
Basic Characteristics of Gas Mixtures
.................................................1
State Equation
..................................................................................1
Mixture Composition
......................................................................2
Stoichiometry and Equivalence Ratios
............................................5
Energy, Enthalpy, and Heat Capacities
............................................8
Adiabatic Combustion Temperature
..............................................11
Calculation of Temperature and Composition of Adiabatic
Combustion Products
.....................................................................13
Density Ratio
.................................................................................18
Chemical Reactions in Flames
...........................................................19
Balance Equations
..............................................................................30
Chapter
2
Unperturbed Laminar Premixed Flame
.............................................39
Flow in a Laminar Premixed Flame
..................................................40
Flow Velocity
.................................................................................41
Pressure Drop
................................................................................42
AEA Theory of Unperturbed Laminar Premixed Flame
..................43
Structure of Unperturbed Laminar Flame: Reaction Zone
...........44
Structure of Unperturbed Laminar Flame: Preheat Zone
.............45
Heat Flux from Reaction Zone
......................................................46
Laminar Flame Speed
...................................................................48
Laminar Flame Thickness
.............................................................49
Reaction Zone Thickness
..............................................................50
Summary of AEA Theory
.............................................................51
Effect of Lewis Number on Unperturbed Laminar
Flame Speed
..............................................................................52
Limitations of AEA Theory
..........................................................53
Laminar Flame Speed and Thickness
................................................55
Measurements and Computations of Laminar Flame Speeds
.......55
Dependence of Laminar Flame Speed and Thickness on
Mixture Composition, Pressure, and Temperature
........................59
Flammability Limits
......................................................................63
Summary
............................................................................................63
VII
viii Contents
Chapters A Brief Introduction to Turbulence
....................................................65
Characteristics of an Incompressible Turbulent Flow
........................66
Mean (Average) Quantities
............................................................66
Conditioned Quantities
..................................................................69
Reynolds and Favre Decompositions
............................................71
Root-Mean-Square Turbulent Velocity
..........................................71
Probability Density Function
.........................................................72
Homogeneous
Isotropie
Turbulence
..............................................75
Correlations, Length Scales, and Timescales
................................75
Taylor s Hypothesis
.......................................................................80
Energy-Spectrum Function
...........................................................80
Summary
.......................................................................................81
Theory of Homogeneous
Isotropie
Turbulence
..................................82
Viscous Dissipation
.......................................................................82
Energy Cascade and Turbulent Stretching
....................................84
Kolmogorov s Theory of Turbulence
.............................................86
Internal Intermittency and Vortex Filaments
................................90
Reynolds-Averaged Navier-Stokes Approach to Numerical
Simulations of Turbulent Flows
.........................................................91
Favre-Averaged Balance Equations
...............................................92
к
-
ε
Model
...................................................................................94
Turbulent Diffusion
............................................................................97
Gradient Diffusion Approximation
...............................................97
Taylor s Theory
............................................................................100
Molecular Diffusion in Turbulent Flows
.....................................103
Summary
.....................................................................................104
Notes
.................................................................................................104
Chapter
4
Phenomenology of Premixed Turbulent Combustion
......................107
Mean Flame Brush Thickness
..........................................................109
Turbulent Flame Speed and Burning Velocity
.................................115
Determination of Turbulent Flame Speed and
Burning Velocity
........................................................................116
Dependence of Turbulent Burning Rate on rms
Velocity and Laminar Flame Speed
............................................123
Empirical Parameterizations of Turbulent Burning Velocity
and Flame Speed
.........................................................................126
Dependence of Burning Velocity on Turbulence
Length Scale
...........................................................................130
Dependence of Turbulent Burning Velocity on Diffusivity,
Pressure, and Temperature
..........................................................131
Dependence of Turbulent Burning Velocity on Differences
in Molecular Transport Coefficients
............................................135
Mean Structure of a Premixed Turbulent Flame
..............................138
Summary
..........................................................................................140
Contents
їх
Chapter
5
Physical Mechanisms and Regimes of Premixed Turbulent
Combustion
.......................................................................................143
Flame Wrinkling and Flamelet Regime
...........................................143
Physical Reasoning: Classical Flamelet Regime
......................... 143
Physical Reasoning: Thin-Reaction-Zone Regime
.....................149
Similarities and Differences between Flamelet and
Thin-Reaction-Zone Regimes
.....................................................151
Bray-Moss-Libby Approach
.......................................................153
Experimental Data
.......................................................................160
Development of Premixed Turbulent Flame in
the Flamelet Regime
....................................................................169
Summary
.....................................................................................172
Variations in Flamelet Structure Due to Turbulent Stretching
........173
Stretch Rate, Strain Rate, and Curvature
....................................173
Strained Laminar Premixed Flames
...........................................175
Curved Laminar Premixed Flames
.............................................187
Brief Summary of Theory of Weakly Stretched Laminar
Premixed Flames
.........................................................................192
Stretching of Laminar Flamelets by Turbulent Eddies
...............195
Local Quenching of Premixed Combustion in Turbulent Flows
......199
Summary
.....................................................................................204
Flame Instabilities
............................................................................205
Hydrodynamic Instability
............................................................205
Diffusive-Thermal Instability
......................................................207
Instabilities of Laminar Flamelets in Turbulent Flows
...............208
Regimes of Premixed Turbulent Combustion
..................................215
Large-Scale Weak and Moderate Kolmogorov Turbulence
........218
Comparison with Other Regime Diagrams
.................................220
Large-Scale Intense Turbulence and Distributed
Reaction Regime
..........................................................................221
Small-Scale Turbulence
...............................................................227
Flame Propagation along Vortex Tubes
...........................................228
Flame Propagation along a Laminar Vortex
...............................228
Vortex Tubes in Turbulent Flows and Premixed Turbulent
Flames
.........................................................................................232
Concluding Remarks
........................................................................235
Chapter
б
Influence of Premixed Combustion on Turbulence
..........................237
Countergradient Scalar Transport in Turbulent Premixed Flames
.... 239
Statement of the Problem
............................................................239
Simplified Discussion of Governing Physical Mechanisms
........240
Physical Mechanisms and Balance Equations
............................246
Numerical Modeling of Turbulent Scalar Transport in
Premtxed Flames
.........................................................................258
Transition from Gradient to Countergradient Transport
.............262
x
Contents
Turbulence
in Premixed Flames
.......................................................275
Flame-Generated Turbulence
......................................................275
Can We Characterize Turbulence in Premixed Flames?
.............289
Summary
..........................................................................................300
Chapter
7
Modeling of Premixed Burning in Turbulent Flows
........................301
Fractal Approach to Evaluating Turbulent Burning Velocity
..........303
Zimont Model of Burning Velocity in Developing Turbulent
Premixed Flames
..............................................................................309
Modeling of Effects of Turbulence on Premixed Combustion
in RANS Simulations
.......................................................................319
Basic Balance Equations
.............................................................319
Key Problem
................................................................................320
Mean Reaction Rate and Turbulent Diffusion
.............................321
Algebraic Models
........................................................................322
Presumed PDF Models
................................................................326
Two-Equation Models: Flame Surface Density and
Scalar Dissipation Rate
...............................................................329
Models of Self-Similarly Developing Premixed
Turbulent Flame
...........................................................................335
General Features
.....................................................................335
Derivation
...............................................................................338
Validation I: TFC Models
.......................................................345
From TFC to FSC Models
......................................................348
Validation II: FSC Models
......................................................352
Burning Velocity and Speed of Expanding
Spherical Flame
...................................................................359
G-Equation.............................................................................
366
Models of Molecular Transport Effects in Premixed
Turbulent Flames
..............................................................................374
Concept of
Markstein
Number (Weakly Stretched Flamelets)
........374
Concept of Critical Stretch Rate (Flamelet Quenching by
Strong Perturbations)
...................................................................379
Concept of Unstable Flamelets
....................................................384
Concept of Leading Points
..........................................................386
Critically Strained Flamelets
..................................................388
Critically Curved Flamelets
....................................................389
Flame Ball
..............................................................................392
Validation
................................................................................396
Concept of Critically Curved Leading Points in RANS
Simulations
.............................................................................400
Highly Curved Leading Points and Flamelet Tip in a
Vortex Tube
.............................................................................402
Leading Points and KPP Problem
..........................................404
Contents
XI
Chemistry in RANS Simulations of Premixed Turbulent
Combustion: Flamelet Library
.........................................................406
Large Eddy Simulation of Premixed Turbulent Combustion
...........409
Chapter
8
Introduction to Nonpremixed Combustion
......................................423
Laminar Diffusion Flames
...............................................................424
Mixture Fraction
..........................................................................425
Paradigm of Infinitely Fast Chemistry
........................................427
Diffusion Flames with Finite-Rate Chemistry
............................434
Extinction
....................................................................................442
Turbulent Diffusion Flames
.............................................................446
Paradigm of Infinitely Fast Chemistry
........................................446
Presumed Probability Density Functions
....................................448
Laminar Flamelet Concept of Turbulent Nonpremixed
Combustion
..................................................................................452
Other Approaches
........................................................................458
Summary
..........................................................................................459
Chapter
9
Partially Premixed Turbulent Flames
..............................................461
Effects Addressed in RANS or
LES
Studies of Partially
Premixed Turbulent Flames
.............................................................462
Inhomogeneity of Mean Mixture Composition
...........................462
Turbulent Pulsations in Mixture Composition
............................465
Mixing-Controlled Afterburning
................................................468
Summary
.....................................................................................471
Effects Ignored in RANS or
LES
Studies of Partially Premixed
Turbulent Flames
..............................................................................472
Back-Supported Stratified Combustion and Extension of
Flammability Limits
....................................................................472
Increase in Flamelet Surface Area Due to Mixture
Inhomogeneity
.............................................................................476
Tribrachial (Triple) Flames
..........................................................482
Summary
.....................................................................................483
Use of Presumed PDFs for Modeling Both Premixed and
Diffusion Burning Modes
................................................................484
Summary
..........................................................................................491
References
.............................................................................................................493
Index
......................................................................................................................519
|
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| indexdate | 2024-07-10T00:22:21Z |
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| isbn | 9781466510241 1466510242 |
| language | English |
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| spelling | Lipatnikov, Andrei 1961- Verfasser (DE-588)1027872727 aut Fundamentals of premixed turbulent combustion Andrei Lipatnikov Boca Raton, Fla. [u.a.] CRC Press, Taylor & Francis Group 2013 XXI, 525 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Verbrennung (DE-588)4062656-8 gnd rswk-swf Turbulente Verbrennung (DE-588)4186470-0 gnd rswk-swf Turbulente Strömung (DE-588)4117265-6 gnd rswk-swf Vormischflamme (DE-588)4188687-2 gnd rswk-swf (DE-588)4151278-9 Einführung gnd-content Turbulente Verbrennung (DE-588)4186470-0 s Vormischflamme (DE-588)4188687-2 s DE-604 Turbulente Strömung (DE-588)4117265-6 s Verbrennung (DE-588)4062656-8 s Digitalisierung UB Bayreuth application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025210511&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Lipatnikov, Andrei 1961- Fundamentals of premixed turbulent combustion Verbrennung (DE-588)4062656-8 gnd Turbulente Verbrennung (DE-588)4186470-0 gnd Turbulente Strömung (DE-588)4117265-6 gnd Vormischflamme (DE-588)4188687-2 gnd |
| subject_GND | (DE-588)4062656-8 (DE-588)4186470-0 (DE-588)4117265-6 (DE-588)4188687-2 (DE-588)4151278-9 |
| title | Fundamentals of premixed turbulent combustion |
| title_auth | Fundamentals of premixed turbulent combustion |
| title_exact_search | Fundamentals of premixed turbulent combustion |
| title_full | Fundamentals of premixed turbulent combustion Andrei Lipatnikov |
| title_fullStr | Fundamentals of premixed turbulent combustion Andrei Lipatnikov |
| title_full_unstemmed | Fundamentals of premixed turbulent combustion Andrei Lipatnikov |
| title_short | Fundamentals of premixed turbulent combustion |
| title_sort | fundamentals of premixed turbulent combustion |
| topic | Verbrennung (DE-588)4062656-8 gnd Turbulente Verbrennung (DE-588)4186470-0 gnd Turbulente Strömung (DE-588)4117265-6 gnd Vormischflamme (DE-588)4188687-2 gnd |
| topic_facet | Verbrennung Turbulente Verbrennung Turbulente Strömung Vormischflamme Einführung |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025210511&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT lipatnikovandrei fundamentalsofpremixedturbulentcombustion |