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Large Eddy Simulation of a Turbulent Nonpremixed Piloted Methane Jet Flame (Sandia Flame D)

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Journal Article - Open Access

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Cornell University Ithaca United States

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Large eddy simulation LES is conducted of the Sandia Flame D Proc. Combust. Inst. 27 1998 1087,Sandia National Laboratories 2004, which is a turbulent piloted nonpremixed methane jet flame. The subgrid scale SGS closure is based on the scalar filtered mass density function SFMDF methodologyJ. Fluid Mech. 401 1999 85. The SFMDF is basically the mass weighted probability density functionPDF of the SGS scalar quantities Turbulent Flows 2000. For this flame which exhibits little local extinction, a simple flamelet model is used to relate the instantaneous composition to the mixture fraction. The modelled SFMDF transport equation is solved by a hybrid finite-differenceMonte Carlo scheme. This is the first LES of a realistic turbulent flame using the transported PDF method as the SGS closure. The results via this method capture important features of the flame as observed experimentally.

Subject Categories:

  • Fluid Mechanics
  • Combustion and Ignition

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