Experimental and Numerical Investigations of Soot Formation in the Laminar to Turbulent Transition of an Acetylene Diffusion Flame.

ABSTRACT: Soot formation from incomplete hydrocarbon combustion poses significant challenges for emission control in propulsion systems. This study employed experimental and numerical methods to investigate the transition process of the acetylene diffusion flame from laminar to turbulent flows, with particular focus on the evolutions of the soot formation rate (ṁ _soot), flame temperature (T), and sound pressure level (SPL). Results from different regimes indicate the following: (1) In the laminar state, ṁ _soot increased linearly with Re, with a growth rate positively correlated with the tube diameter. (2) After entering the transitional state, ṁ _soot decreased exponentially by over 95%; T gradually increased by 150 K; and bot

SUBMITTER: Chen S 

PROVIDER: S-EPMC12547530 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature