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Simulation of methane/air non-premixed turbulent flames based on REDIM simplified chemistry

DOI: 10.1615/THMT-18.160
pages 201-211

F. Minuzzi
Graduate Program in Applied Mathematics, Federal University of Rio Grande do Sul - UFRGS Av. Bento Gonc¸alves 9500, 91509-900, Porto Alegre, RS, Brazil

C. Yu
Institute of Technical Thermodynamics, Karlsruhe Institute of Technology - KIT Engelbert-Arnold-Str. 4, 76131, Karlsruhe, Germany

Ulrich Maas
Institute for Technical Thermodynamics, Karlsruhe University (TH), Kaiserstraβe 12, 76131 Karlsruhe, Germany

Résumé

Reaction-diffusion manifolds (REDIM) based on a simple gradient estimate are employed to simulate methane/air turbulent flames. Validation is performed for non-premixed laminar flames. A RANS/transportedPDF strategy for the simulation of turbulent reacting flows is presented and used to validate the proposed model. Results show that the simple gradient guess is enough to simulate turbulent flames at moderate Reynolds number, which demonstrates the suitability of REDIM as reduced kinetic model in reactive flows.

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