Figure 15.

The scatter plots of $\left|cos({\mathbf{r}}_{\mathbf{2}},{\mathbf{s}}_{\mathbf{2}})\right|$ and $\left|cos({\mathbf{r}}_{\mathbf{3}},{\mathbf{s}}_{\mathbf{1}})\right|$ colored by ${\tilde{\dot{S}}}_{\mathrm{heat}}$ for the non-premixed flame at $x=1.5R_0$, where the black scatter plots of large $\left|cos({\mathit{r}}_{\mathbf{1}},{\mathit{s}}_{\mathbf{3}})\right|>0.8$ are superimposed.