Lipatnikov Fundamentals of Premixed Turbulent Combustion

1. Auflage 2012
ISBN: 978-1-4665-1025-8
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 548 Seiten

Lean burning of premixed gases is considered to be a promising combustion technology for future clean and highly efficient gas turbine combustors. Yet researchers face several challenges in dealing with premixed turbulent combustion, from its nonlinear multiscale nature and the impact of local phenomena to the multitude of competing models. Filling a gap in the literature, Fundamentals of Premixed Turbulent Combustion introduces the state of the art of premixed turbulent combustion in an accessible manner for newcomers and experienced researchers alike.
To more deeply consider current research issues, the book focuses on the physical mechanisms and phenomenology of premixed flames, with a brief discussion of recent advances in partially premixed turbulent combustion. It begins with a summary of the relevant knowledge needed from disciplines such as thermodynamics, chemical kinetics, molecular transport processes, and fluid dynamics. The book then presents experimental data on the general appearance of premixed turbulent flames and details the physical mechanisms that could affect the flame behavior. It also examines the physical and numerical models for predicting the key features of premixed turbulent combustion.
Emphasizing critical analysis, the book compares competing concepts and viewpoints with one another and with the available experimental data, outlining the advantages and disadvantages of each approach. In addition, it discusses recent advances and highlights unresolved issues. Written by a leading expert in the field, this book provides a valuable overview of the physics of premixed turbulent combustion. Combining simplicity and topicality, it helps researchers orient themselves in the contemporary literature and guides them in selecting the best research tools for their work.

Zielgruppe

Researchers and engineers working in the area of internal combustion engines, particularly with premixed and partially premixed turbulent flames and burning in internal combustion engines; and graduate students taking advanced courses in combustion.

Autoren/Hrsg.

Lipatnikov, Andrei

Fachgebiete

• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Technische Thermodynamik
• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Strömungslehre
• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Verfahrenstechnik, Chemieingenieurwesen

Inhaltsverzeichnis

General Knowledge on Reacting Gas Mixtures
Basic Characteristics of Gas Mixtures
Chemical Reactions in Flames
Balance Equations

Unperturbed Laminar Premixed Flame
Flow in a Laminar Premixed Flame
AEA Theory of Unperturbed Laminar Premixed Flame

Laminar Flame Speed and Thickness

Summary

A Brief Introduction to Turbulence

Characteristics of an Incompressible Turbulent Flow

Theory of Homogeneous Isotropic Turbulence

Reynolds-Averaged Navier-Stokes Approach to Numerical Simulations of Turbulent Flows

Turbulent Diffusion

Notes

Phenomenology of Premixed Turbulent Combustion

Mean Flame Brush Thickness

Turbulent Flame Speed and Burning Velocity

Mean Structure of a Premixed Turbulent Flame

Summary

Physical Mechanisms and Regimes of Premixed Turbulent Combustion

Flame Wrinkling and Flamelet Regime

Variations in Flamelet Structure Due to Turbulent Stretching

Flame Instabilities

Regimes of Premixed Turbulent Combustion

Flame Propagation along Vortex Tubes

Concluding Remarks

Influence of Premixed Combustion on Turbulence

Countergradient Scalar Transport in Turbulent Premixed Flames

Turbulence in Premixed Flames

Summary

Modeling of Premixed Burning in Turbulent Flows

Fractal Approach to Evaluating Turbulent Burning Velocity

Zimont Model of Burning Velocity in Developing Turbulent Premixed Flames

Modeling of Effects of Turbulence on Premixed Combustion in RANS Simulations

Models of Molecular Transport Effects in Premixed Turbulent Flames

Chemistry in RANS Simulations of Premixed Turbulent Combustion: Flamelet Library
Large Eddy Simulation of Premixed Turbulent Combustion

Introduction to Nonpremixed Combustion

Laminar Diffusion Flames

Turbulent Diffusion Flames

Summary

Partially Premixed Turbulent Flames

Effects Addressed in RANS or LES Studies of Partially Premixed Turbulent Flames

Effects Ignored in RANS or LES Studies of Partially Premixed Turbulent Flames

Use of Presumed PDFs for Modeling Both Premixed and Diffusion Burning Modes

Summary

References

Index

Über Autor(innen)

Andrei N. Lipatnikov, Ph.D., is an associate professor at the Department of Applied Mechanics at Chalmers University of Technology, Gothenburg, Sweden. He graduated from Moscow Institute of Physics and Technology (MIPT) in 1984 and obtained his Ph.D. from the same institute in 1987. Dr. Lipatnikov’s academic activities have been concerned with research on turbulent and laminar combustion processes, pollutant formation in flames, autoignition of premixed mixtures, and numerical modeling of combustion in spark ignition engines. He has published more than 190 scientific contributions, including 59 journal papers. Dr. Lipatnikov is a member of the Combustion Institute.