Fluent燃烧模型 An in Depth Review of Combustion Physics and Models.ppt

Course Agenda 1:30-1:45 Introduction to Combustion Modeling 1:45-2:45 Gas Phase Combustion Models 2:45-3:30 Additional Physical Models Discrete Phase Modeling Radiation Modeling Pollutant Modeling 3:30-4:30 Combustion Modeling Case Studies 4:30-5:00 Combustion Modeling Strategies Introduction to Combustion Modeling Applications of Combustion Modeling Overview of Capabilities in FLUENT 5 Meshes for Combustion Simulations Kinetics and Turbulence-Chemistry Interaction Scaling Analysis Classification of Gas Phase Combustion Applications of Combustion Modeling Wide range of homogeneous and heterogeneous reacting flows: Furnaces Boilers Process heaters Gas turbines Rocket engines Predictions of: Flow field and mixing characteristics Temperature field Species concentrations Particulates and pollutants Overview of Combustion Modeling FLUENT 5 provides an extensive array of physical models for combustion simulations. FLUENT 5 provides maximum mesh flexibility, and GAMBIT 1.3 makes it easy to generate hybrid meshes. Additional distinctive capabilities include: Materials database Robust and accurate solver Solution-adaptive mesh refinement (conformal and hanging-node) Industry-leading parallel performance User-friendly GUI, post-processing and reporting Highly customizable through user defined functions Available Combustion Models in FLUENT 5 Gas phase combustion Generalized finite rate formulation (Magnussen model) Conserved scalar PDF model (one and two mixture fractions) Laminar flamelet model Zimont model Discrete phase model Turbulent particle dispersion Stochastic tracking Particle cloud model Pulverized coal and oil spray combustion sub-models Radiation models: DTRM, P-1, Rosseland and Discrete Ordinates Turbulence models: k-?, RNG k-?, RSM, Realizable k-? and LES Pollutant models: NOx with reburn chemistry and soot Meshes for Combustion Simulations For convergence and accuracy, a quality mesh is critical ... Low skew (0.9 everywhere) Moderate aspect ratio