The accuracy of CFD simulations using
the RANS approach has been investigated
for oxy-natural gas combustion. The
OXYFLAM-2 experiments by the IFRF
have been used as the test case for the
CFD simulations. Symmetry has been
used to create quarter meshes of the fur-
nace for CFD. Oxy-natural gas chemistry
has been investigated with equilibrium cal-
culations. The WD mechanism has been
used. The JL mechanism failed in FLU-
ENT due to program error. A numerical
fuel has been developed for the WD mech-
anism. A WSGGM applicable to oxy-fuel
conditions is used in the simulations. CFD
simulations with various models have been
performed. All simulations provided good
predictions of velocity and turbulence and
poor predictions of temperature. Species
were predicted to varying accuracies. In-
let turbulence intensity has been found to
have the greatest eect on simulation ac-
curacy.