Influence of Turbulence-Chemistry Interaction Modeling on the Structure and the Stability of a Swirl-Stabilized Flame

Scale Adaptive Simulations (SAS) of the swirl-stabilized flame of the PRECCINSTA burner are presented. Within the computations a large share of velocity fluctuations as well as temperature and species fluctuations are resolved in combustion regions. With rising resolution of fluctuating quantities, the impact of the sub grid scale (SGS) turbulence and turbulence chemistry interaction (TCI) models decreases. The main topic of this paper is to investigate the residual influence of an SGS-TCI model in case of the SAS of the swirl-stabilized flame. As a first outcome, the data obtained in this work are in very good agreement with experimental and LES data from the literature. And secondly, the modeling of SGS-TCI is of minor importance for the resulting time-mean quantities due to the high share of resolved velocity, temperature and species fluctuations in the computations.Copyright © 2015 by ASME