Capturing multi-regime combustion in turbulent flames with a virtual chemistry approach

Multiple flame regimes are encountered in industrial combustion chambers, where premixed, stratified and non-premixed regions may coexist. To obtain a predictive tool for pollutant formation predictions, chemical modeling must take into account the influence of such complex structure. The objective this article is to apply compare two reduced chemistry models on both laminar turbulent multi-regime configurations order analyze their capabilities predicting structure CO formation. challenged approaches (i) premixed flamelet-based tabulated method, whose thermochemical variables parameterized by mixture fraction progress variable, (ii) virtual scheme which has been optimized retrieve properties canonical 1-D flames. methods first applied compute series partially-premixed methane-air counterflow Results compared detailed simulations. Both reproduced thermal but only captures all ranges equivalence ratio from stoichiometry pure flame. Finally, combined with Thickened Flame model LES piloted jet inhomogeneous inlet, Sydney burner. Mean RMS temperature mass radial profiles available experimental data. Scatter data space Wasserstein metric numerical also studied. analyses confirm again that approach able impact