Effect of the turbulence modeling in large-eddy simulations of nonpremixed flames undergoing extinction and reignition
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2017

Simulating practical combustion systems requires the approximation of the interaction between turbulence, molecular transport and chemical reactions. Turbulent combustion models are used for this purpose, but their behavior is difficult to anticipate based on their mathematical formulations, making the use of numerical experimentation necessary. Therefore, the present work explores the effect of three turbulent-combustion models, two eddy-viscosity models, and their parameters on a combustion problem which is notoriously difficult to model: flame extinction and reignition. For this purpose, two types of temporal jets are considered, and direct-numerical-simulation results are compared qualitatively with those from large-eddy simulations.

Författare

Esteban D. Gonzalez-Juez

Combustion Science and Engineering, Inc.

Adhiraj Dasgupta

Combustion Science and Engineering, Inc.

Salman Arshad

Chalmers, Tillämpad mekanik, Förbränning

Michael Oevermann

Chalmers, Tillämpad mekanik, Förbränning

David Lignell

Brigham Young University

AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

AIAA 2017-0604

Ämneskategorier

Acceleratorfysik och instrumentering

Subatomär fysik

DOI

10.2514/6.2017-0604

ISBN

9781624104473

Mer information

Senast uppdaterat

2018-09-06