The results are divided into two parts: first, the effect of turbulence-chemistry interaction is studied by comparing simulation results from the TPDF and the WM model, also the relevance of turbulence-radiation interaction is evaluated by considering the TPDF results.
2]O) in conjunction with their respective Plank mean absorption coefficient obtained using the TPDF model at 4 ms after start of injection.
Figure 2 shows spatial distributions of various quantities related to radiation obtained using the DOM approach in conjunction with two different combustion models: the well-mixed (upper) and the TPDF model (lower).
A comparatively thin layer has been observed for the WM model in comparison with the TPDF model where the reaction zone is more distributed due to the consideration of turbulent fluctuations within a cell.
P1 and OPT) are compared for the TPDF method and the WM case combined with the DOM radiation model is also illustrated for reference.
Also, for the radiation absorption rate, similar results are observed for the TPDF method.
Considering the radiation emission rate illustrated in Figure 2, it is interesting to note that the peak value of radiation emission between the WM and the TPDF are roughly the same.
Therefore, the sensitivity study with respect to different ambient conditions has been carried out with the WM model only and a similar trend is expected when using the TPDF method.