The combustion of fossil fuels remains a key technology for the foreseeable future. It is therefore important that we understand the mechanisms of combustion and, in particular, the role of turbulence within this process. Combustion always takes place within a turbulent flow field for two reasons: turbulence increases the mixing process and enhances combustion, but at the same time combustion releases heat which generates flow instability through buoyancy, thus enhancing the transition to turbulence. The four chapters of this book present a thorough introduction to the field of turbulent combustion. After an overview of modeling approaches, the three remaining chapters consider the three distinct cases of premixed, non-premixed, and partially premixed combustion, respectively. This book will be of value to researchers and students of engineering and applied mathematics by demonstrating the current theories of turbulent combustion within a unified presentation of the field.
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applied approach assumed assumption average becomes burning velocity calculated called chemical chemistry compared conditional consider constant contains corresponds corrugated defined density dependence derived diffusion flame direction discussed eddies effects engine equal et al example expansion experimental extinction Favre field Figure filtered flame front flame surface flamelet equations flamelet model flow flow field fluctuations formulation fuel function gradient heat increase integral introduced laminar layer leads length scale lift-off limit mass mean measurements mechanism method mixing mixture fraction nonpremixed normal obtained occurs particles Peters predict premixed premixed flame presented quantity range ratio reactive scalars regime region represents respect scalar dissipation rate scale shown shows similar simulations solution space steady strain structure temperature term thickness thin reaction zones transport turbulent burning velocity turbulent combustion turbulent flame unburnt unsteady values variable variance