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Numerical simulation of turbulent reacting flow in a combustion chamber using detailed chemical kinetics

Darbandi, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. Publisher: 2013
  3. Abstract:
  4. In this work, a hybrid finite-volume-element method is used to solve turbulent reacting flow in a combustion chamber considering detailed chemical kinetics. The hybrid unification enables the solver to treat the reacting flow in very complex geometries and to respect the required physical considerations fully. We employ two-equations standard κ-ω turbulence model incorporated with suitable wall functions to model the turbulence behavior. Assuming optically-thin gases, radiation effects are taken into account in our simulations. A flamelet combustion model is applied to consider the large detailed chemical kinetics, which can normally occur within combustion processes. Turbulence-chemistry interaction is taken into account via using a suitable probability density function. We extend the physical influence scheme (PIS) to approximate the mixture fraction variance fluxes over the cell faces. The PIS scheme estimates the advection fluxes suitably while respects the physics of flow fully and totally consistent with the flow governing equations. We extend a bi-implicit algorithm to solve all transport equations, i.e., we solve the hydrodynamics equations and thermo-chemical transport equations separately. The current numerical solutions are validated against data collected from measurement. They show great agreement with the experiments
  5. Keywords:
  6. Combustion pro-cess ; Complex geometries ; Detailed chemical kinetic ; Flow governing equations ; Hydrodynamics equation ; Numerical solution ; Turbulence-chemistry interactions ; Turbulent reacting flows ; Aerospace engineering ; Combustion chambers ; Probability density function ; Wall function ; Kinetics
  7. Source: 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 ; 2013 ; 9781624101816 (ISBN)
  8. URL: http://arc.aiaa.org/doi/abs/10.2514/6.2013-79