Comparison of Presumed PDF Models of Turbulent Flames

Figure 10

Dependencies of the normalized mean density (thin curves) and Favre-averaged combustion progress variable 𝑐̃ (bold curves) on the Reynolds-averaged combustion progress variable, calculated invoking the beta-function PDF (curves 1), the R-2𝛿-PDF (curves 2), the 2𝛿-PDF (curves 3), and the BML equations (curves 4) for 𝐹=1.0 and (a) 𝑔=0.25, (b) 𝑔=0.5, and (c) 𝑔=0.75.

(a) 𝑔=0.25

(b) 𝑔=0.5

(c) 𝑔=0.75