Verification and validation studies for a piloted methane-air jet flame Conference

Skudarnov, PV, Lin, CX, Gokaltun, S. (2008). Verification and validation studies for a piloted methane-air jet flame . 6 709-715. 10.1115/IMECE2007-41691

cited authors

  • Skudarnov, PV; Lin, CX; Gokaltun, S



  • In this paper, verification and validation analysis for a turbulent jet flame is presented. The numerical simulations were performed for a piloted methane-air jet flame in an axisymmetric burner (jet Reynolds number of 22,400). Numerical results were obtained using the finite volume method on structured grids. The verification of the numerical solutions was performed by calculating the Grid Convergence Index (GCI). A set of three different grids is used to calculate the discretization uncertainty where each grid was generated by doubling the number of cells in each direction of the coarser grid. The value of GCI was used to calculate the observed order of convergence of the numerical method for local values of temperature, mass fraction of species and local velocity at various points along the centerline of the flow domain. A detailed chemical mechanism was used with 16 species and 41 reactions. Numerical simulations showed that the fine grid result was in the asymptotic range of convergence. The observed order of convergence was found to be between 1.8 and 4.5. The error band for the Richardson extrapolated value was found to be below 1.3%. The effect of k-e turbulence parameter C2ε was investigated and a value of 1.8 was found to be appropriate to match the fine grid results with the experimental data. Finally the numerical results were validated with experimental data using the local measurements of temperature and species mass fractions. Comparison of the computational results with experimental data showed that simulations correctly predict the trends observed in the measurements. Good agreement between experiments and simulations was obtained with the finest grid, which predicted peak temperature within 3.0% of experiment. For the main reaction products of CO2 and H2O, the peak values are captured within 0.33% and 3% of experiment, respectively. Copyright © 2007 by ASME.

publication date

  • May 29, 2008

Digital Object Identifier (DOI)

International Standard Book Number (ISBN) 10

International Standard Book Number (ISBN) 13

start page

  • 709

end page

  • 715


  • 6