Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
COMPUTATION OF THE RADIATIVE HEAT TRANSFER IN A NON-PREMIXED TURBULENT FLAME USING THE GRAY GAS AND THE WSGG MODELS
Submission Author:
Larissa Domingues Lemos , RS , Brazil
Co-Authors:
Larissa Domingues Lemos, Felipe Roman Centeno, Francis França
Presenter: Larissa Domingues Lemos
doi://10.26678/ABCM.COBEM2019.COB2019-1945
Abstract
This work solves a numerical problem and analyses the comparison of numerical and experimental data for radiative heat flux. The problem consists of a non-premixed turbulent flame, the fuel is methane dilute of CO2 and the ambient air is the oxidant. The chemical kinetics was solved with the steady laminar diffusion flamelet (SLDF) model. To generate the flamelet library, turbulence-chemistry interaction is taken into account through previously assumed probability density functions (PDF) of mean scalars. The spatial integration of the radiative transfer equation is carried out with the discrete ordinates method. The spectral gas model is weighted-sum-of-gray-gases (WSGG). Turbulence is solved with k-ε Standard model. The solution is obtained using ANSYS/Fluent code coupled with user-defined functions (UDFs).
Keywords
Weight-sum-of-gray-gases model, SLDF, CFD, user defined function
