Consistent Conditional Moment Closure Modelling of a Lifted Turbulent Jet Flame Using the Presumed 𝛽-PDF Approach

Figure 6

Transport budget of the steady-state 𝑄_𝑇 equation (r.h.s. terms of (9)) at several axial locations around the stabilisation height: (a) 𝑇_𝑐=1030K (𝑦/𝑑=1.58), (b) 𝑇_𝑐=1045K (𝑦/𝑑=1.47), and (c) 𝑇_𝑐=1060K (𝑦/𝑑=1.16). 𝑇_RS, radiative source; 𝑇_CS, chemical source; 𝑇_MM, micromixing; 𝑇_𝐶,𝑥, axial convection; 𝑇_𝐶,𝑦, radial convection; 𝑇_𝐷,𝑥, axial diffusion; 𝑇_𝐷,𝑦, radial diffusion. The vertical dashed line corresponds to the location of the stoichiometric mixture fraction. All terms are scaled down by a factor of 10³ and the units are K/s. The CSDR is modelled using Girimaji’s model.

(a) 𝑇_𝑐=1030 K, 𝑦/𝑑=1.58

(b) 𝑇_𝑐=1045 K, 𝑦/𝑑=1.47

(c) 𝑇_𝑐=1060 K, 𝑦/𝑑=1.16