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.
Author(s): Andrei Lipatnikov
Publisher: CRC Press
Year: 2012
Language: English
Pages: xxi, 518
City: Boca Raton
Tags: Топливно-энергетический комплекс;Топливо и теория горения;Исследования процессов горения и взрыва;
Content: 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
Abstract: "Lean burning of premixed gases is considered to be a promising combustion technology for future clean and highly efficient gas turbine engines. This book highlights the phenomenology of premixed turbulent flames. The text provides experimental data on the general appearance of premixed turbulent flames, physical mechanisms that could affect flame behavior, and physical and numerical models aimed at predicting the key features of premixed turbulent combustion. The author aims to provide a simple introduction to the field for advanced graduate and postgraduate students. Topics covered include Laminar premixed flames, homogenous isotropic turbulence, and incompressible turbulent flow"
