An introduction to turbulent reacting flows:
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
London [u.a.]
Imperial College Press
2008
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis Klappentext |
| Physical Description: | XIII, 177 S. graph. Darst. |
| ISBN: | 1860947794 9781860947797 1860947786 9781860947780 |
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| 245 | 1 | 0 | |a An introduction to turbulent reacting flows |c R. S. Cant ; E. Mastorakos |
| 264 | 1 | |a London [u.a.] |b Imperial College Press |c 2008 | |
| 300 | |a XIII, 177 S. |b graph. Darst. | ||
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Record in the Search Index
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| adam_text | Contents
Preface
vii
1.
Introduction
1
1.1
Motivation,
aims and audience
............... 1
1.1.1
Relevance
....................... 1
1.1.2
Aims and structure
................. 2
1.1.3
Bibliography
..................... 3
1.2
Governing equations
..................... 5
1.2.1
Instantaneous equations and basic concepts
.... 5
1.2.2
Reynolds averaging
................. 10
1.2.3
The mean reaction rate
............... 10
1.3
Summary
........................... 11
1.4
Exercises
........................... 11
2.
Some Comments on Turbulence
13
2.1
Introduction
.......................... 13
2.2
Statistical description
.................... 14
2.2.1
The randomness of turbulence
........... 14
2.2.2
Probability density functions
............ 15
2.3
Turbulent scales
....................... 21
2.3.1
Large-eddy scales
.................. 21
2.3.2
Dissipation and small scales
............ 21
2.3.3
Taylor
microscale
.................. 23
2.3.4
What are eddies?
.................. 24
2.4
Temporal and spatial correlations
.............. 24
2.4.1
Temporal autocorrelation
.............. 24
IX
χ
An Introduction to Turbulent Reacting Flows
2.4.2
The convergence of averages
............ 25
2.4.3
Spatial autocorrelation
............... 26
2.4.4
Taylor hypothesis
.................. 27
2.4.5
Scalar scales
..................... 28
2.5
Reynolds-averaged equations
................ 28
2.5.1
First moments
.................... 28
2.5.2
Eddy diffusivity
................... 29
2.5.3
Second moments
................... 30
2.5.4
Computational Fluid Dynamics
.......... 32
2.6
Spectra and intermittency
.................. 32
2.6.1
Spectra
........................ 32
2.6.2
Intermittency
.................... 34
2.7
Summary
........................... 36
2.8
Exercises
........................... 36
3.
Mixing
37
3.1
Introduction
.......................... 37
3.2
Molecular mixing
....................... 37
3.2.1
Some analytical solutions
.............. 37
3.2.2
Transport properties
................ 41
3.2.3
Random walk
.................... 42
3.2.4
Brownian motion
.................. 43
3.3
Turbulent mixing
....................... 45
3.3.1
Taylor dispersion
.................. 45
3.3.2
Characterization of mixing
............. 48
3.3.3
Length scales and spectra
.............. 53
3.3.4
Scalar dissipation
.................. 55
3.4
Reaction-diffusion systems
.................. 58
3.4.1
Propagating front
1................. 59
3.4.2
Propagating front
2................. 59
3.4.3
Unsteady flamelet equation
............. 60
3.4.4
Final comments
................... 61
3.5
Summary
........................... 61
3.6
Exercises
........................... 62
4.
Flows with Non-premixed React ants
63
4.1
Introduction
.......................... 63
4.2
Moment methods
....................... 63
Contents xi
4.2.1
Neglecting the fluctuations: very slow chemistry
. 63
4.2.2
Eddy Dissipation Concept and derivatives
.... 65
4.2.3
Second-order
..................... 66
4.2.4
Presumed joint
pdf................. 66
4.2.5
Other
......................... 67
4.3
The well-stirred reactor
................... 67
4.4
Conserved scalar methods
.................. 69
4.4.1
Mixture fraction
................... 69
4.4.2
Qualitative structure of a laminar non-premixed
flame
......................... 71
4.4.3
Fast chemistry
.................... 72
4.4.4
The
pdf
of the mixture fraction
.......... 74
4.4.5
Steady and transient flamelets
........... 75
4.4.6
Conditional Moment Closure
............ 77
4.4.7
Flame Surface Density
............... 79
4.5
Transported
pdf....................... 80
4.5.1
Governing equations
................. 80
4.5.2
Monte-Carlo method
................ 81
4.5.3
Further developments
................ 82
4.6
Concluding comments
.................... 83
4.7
Exercises
........................... 84
5.
Flows with Premixed Reactants
87
5.1
Introduction
.......................... 87
5.2
Laminar premixed flames
.................. 87
5.2.1
Background
..................... 87
5.2.2
Propagation
..................... 89
5.2.3
Laminar premixed flame structure
......... 89
5.2.4
Estimation of laminar premixed flame thickness
- 91
5.2.5
Effects of mixture strength: flammability limits
. 92
5.2.6
Effects of pressure and temperature
........ 93
5.3
Turbulent premixed flames
................. 94
5.3.1
Turbulent burning velocity
............. 94
5.3.2
Stretch, strain and curvature
............ 95
5.3.3
Turbulent flame speed measurements
....... 97
5.3.4
Turbulent flame speed correlations
......... 99
5.3.5
Turbulent flame speed: a fractal approach
.... 100
5.3.6
Dimensionless numbers for turbulent premixed
flames
......................... 101
xii
An Introduction to Turbulent Reacting Flows
5.3.7
Regime diagrams
.................. 102
5.4
Turbulent premixed combustion modelling
......... 104
5.4.1
Favre averaging
................... 105
5.4.2
Turbulent transport in premixed flames
...... 106
5.4.3
Eddy Break-Up Model for premixed flames
.... 108
5.4.4
The laminar flamelet concept
............ 109
5.4.5
Laminar flamelets in practice
............ 109
5.4.6
Bray-Moss-Libby transport modelling
...... 110
5.4.7
Bray-Moss-Libby reaction rate modelling
..... 117
5.4.8
Flame surface density modelling
.......... 121
5.4.9
The G-equation formulation
............ 123
5.4.10
Other models for turbulent premixed flames
. . . 130
5.5
Exercises
........................... 131
6.
Numerical Methods for Reacting Flows
133
6.1
Introduction
.......................... 133
6.2
Combustion CFD
....................... 133
6.2.1
Unsteady convection-diffusion-reaction equation
. 134
6.2.2
Spatial discretisation
................ 134
6.2.3
Solution algorithms
................. 136
6.2.4
RANS,
LES
and DNS
................ 137
6.2.5
Numerical considerations for combustion problems
137
6.3
Numerical solvers for stiff differential equations
...... 140
6.3.1
Background
..................... 140
6.3.2
Forward
Euler
method
............... 141
6.3.3
Timescales and stiffness
............... 141
6.3.4
Properties of solvers
................. 144
6.3.5
Solvers for chemical systems
............ 145
6.3.6
Method of
Unes
................... 148
6.3.7
Final comments
................... 149
6.4
Exercises
........................... 150
7.
Experimental Methods for Reacting Flows
151
7.1
Introduction
.......................... 151
7.2
General concepts
....................... 151
7.2.1
Uncertainties and measurement errors
....... 151
7.2.2
Resolution and response
.............. 153
7.2.3
Filtering
....................... 154
Contents xiii
7.3
Measurement techniques for reacting flows
......... 155
7.3.1
Visualization
..................... 155
7.3.2
Intrusive techniques
................. 155
7.3.3
Non-intrusive techniques
.............. 157
7.4
Final comments
........................ 160
7.5
Exercises
........................... 160
8.
Epilogue
163
Bibliography
165
Index
175
An Introduction to
Turbulent Reacting Flows
This book provides physical intuition and key entries to the ever-growing
body of literature on turbulent reacting flows. It is of a tutorial nature and
includes some historical perspective of the theories developed over the past
30
years. A selection of basic and advanced materials is used to build the
necessary background and emphasize some of the main concepts that the
student or newcomer to the field of turbulent reacting flows should know,
thus facilitating further study of specialized research papers and research
monographs. A range of exercises is also provided in order to consolidate the
student s understanding.
Key Features
•
Discusses the differences and similarities between the available models
•
Introduces newcomer to a complicated field
•
Provides key entries to a vast literature
P49BSC
шмзвга-і-мо»
KSHI-Iß 1-86094-77!
Imperial College Press
ISBM-13
978-1-86094-779-7
<pM)
(Ѕ8И-10
1-86094-779-4
(pW)
1
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| illustrated | Illustrated |
| indexdate | 2024-07-09T22:42:43Z |
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| isbn | 1860947794 9781860947797 1860947786 9781860947780 |
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| spelling | Cant, Stewart Verfasser aut An introduction to turbulent reacting flows R. S. Cant ; E. Mastorakos London [u.a.] Imperial College Press 2008 XIII, 177 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Turbulente Verbrennung (DE-588)4186470-0 gnd rswk-swf Verbrennung (DE-588)4062656-8 gnd rswk-swf Turbulente Strömung (DE-588)4117265-6 gnd rswk-swf Turbulente Verbrennung (DE-588)4186470-0 s DE-604 Turbulente Strömung (DE-588)4117265-6 s Verbrennung (DE-588)4062656-8 s Mastorakos, Epaminondas Verfasser aut Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=020474767&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=020474767&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA Klappentext |
| spellingShingle | Cant, Stewart Mastorakos, Epaminondas An introduction to turbulent reacting flows Turbulente Verbrennung (DE-588)4186470-0 gnd Verbrennung (DE-588)4062656-8 gnd Turbulente Strömung (DE-588)4117265-6 gnd |
| subject_GND | (DE-588)4186470-0 (DE-588)4062656-8 (DE-588)4117265-6 |
| title | An introduction to turbulent reacting flows |
| title_auth | An introduction to turbulent reacting flows |
| title_exact_search | An introduction to turbulent reacting flows |
| title_full | An introduction to turbulent reacting flows R. S. Cant ; E. Mastorakos |
| title_fullStr | An introduction to turbulent reacting flows R. S. Cant ; E. Mastorakos |
| title_full_unstemmed | An introduction to turbulent reacting flows R. S. Cant ; E. Mastorakos |
| title_short | An introduction to turbulent reacting flows |
| title_sort | an introduction to turbulent reacting flows |
| topic | Turbulente Verbrennung (DE-588)4186470-0 gnd Verbrennung (DE-588)4062656-8 gnd Turbulente Strömung (DE-588)4117265-6 gnd |
| topic_facet | Turbulente Verbrennung Verbrennung Turbulente Strömung |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=020474767&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=020474767&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |
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