The present work showcases simulation of a turbulent diffusion flame for validation of the turbulencechemistry interaction approach. The turbulence model employed was k-ε with the model constants determined from simulation of a non-reacting turbulent jet. The jet decay rate and spread rate were determined with excellent accuracy when compared with experimental measurements. The non-dimensional velocity profiles also show a significant agreement except at radial locations far away from the axial centreline. Simulations of the DLR-A flame using a single step infinite rate chemistry assumption were carried out with the model constants thus determined. The reaction rates are determined based on the mixed-is-combusted approach where the mixture fraction, a conserved scalar quantity is obtained by the solution of a governing equation. In addition the mean velocity, species mass fractions and temperature profiles in the axial and radial direction are compared with experimental data. The axial profiles show very good agreement while the radial profiles show deviations due to the assumption of equal binary mass diffusivities for all species and unity Lewis number, which is a suitable approximation for turbulent gaseous flows. In addition, the temperatures are overpredicted by close to 15% due to the single-step infinite rate chemistry approach adopted in this study. The validation serves to justify the choice of the combustion model for the simulation of turbulent reacting flows. This is especially significant due to the lesser computational effort involved in obtaining the rates of the reaction for a turbulent diffusion flame. © 2021, Begell House Inc. All rights reserved.