An Analysis of Turbulent Mixing Effects on the Soot Formation in High Pressure n-dodecane Sprays

An investigation on early evolution of soot in n-dodecane spray combustion using large eddy simulation

“…On the other hand, the total soot mass for the URANS case increases slowly to reach a QSS while no soot spike is observed. This prediction is similar to those reported in [7,8,15,34]. This implies that the URANS turbulence closure approach is the main reason for the failed prediction of the soot spike formation.…”

“…Numerical models, once being validated, can be used to elucidate different phenomena and expand on the limited details from experimental measurements. To gain a better understanding of the soot formation processes, different soot models (e.g sectional soot model and phenoemenological soot model) [7][8][9] have been proposed to study soot formation processes in Spray A. With the implementation of the well-stirred reactor (WSR) model where turbulence chemistry interaction (TCI) is not considered, Wang et al [9] and Razak et al [7] were able to capture the overall steady-state SVF with varying O 2 levels in their Unsteady Reynolds Naiver Stokes (URANS) simulations.…”