Research output: Contribution to journal › Article
To deeply understand the non-premixed swirl flame, the effects of two burner exit geometries on the non-premixed swirl flames modes were studied by performing OH-PLIF, PIV measurements and coupling LES with PDF combustion model numerically. The results showed that the stochastic PDF method can predict the swirl flow fields and detailed flame structures including local extinction. Two different quarl geometries played significant roles on the flow fields thus leading to the local extinction and lift-off. The recirculation zone is smaller in the non-quarl case which causes a more serious quenching state. Meanwhile, at the stoichiometric equivalence ratio, the OH and CH2O distributions in the no-quarl exit were broader than the quarl exit at the low temperature regime. This indicated that many low-temperature reactions took places, providing beneficial conditions for the lift-off flame stabilization.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Translated title of the contribution||Effects of Burner Exit Geometries on Swirl Flames|
|Number of pages||8|
|Journal||Tuijin Jishu/Journal of Propulsion Technology|
|Publication status||Published - 2019 Jun 1|