1st Edition

Fundamentals of Premixed Turbulent Combustion





ISBN 9781138074415
Published November 22, 2017 by CRC Press
548 Pages 229 B/W Illustrations

USD $86.95

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Book Description

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.

Table of Contents

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

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Author(s)

Biography

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.