Direct numerical simulations of turbulent lean premixed combustion

Sankaran, Ramanan; Hawkes, Evatt R.; Chen, Jacqueline H.; Lu, Tianfeng; Law, Chung K.

doi:10.1088/1742-6596/46/1/004

Direct numerical simulations of turbulent lean premixed combustion

Journal Article · Fri Sep 01 04:00:00 EDT 2006 · Journal of Physics. Conference Series

DOI:https://doi.org/10.1088/1742-6596/46/1/004· OSTI ID:1567276

Sankaran, Ramanan; Hawkes, Evatt R.; Chen, Jacqueline H.; Lu, Tianfeng; Law, Chung K.

In recent years, due to the advent of high-performance computers and advanced numerical algorithms, direct numerical simulation (DNS) of combustion has emerged as a valuable computational research tool, in concert with experimentation. The role of DNS in delivering new Scientific insight into turbulent combustion is illustrated using results from a recent 3D turbulent premixed flame simulation. To understand the influence of turbulence on the flame structure, a 3D fully-resolved DNS of a spatially-developing lean methane-air turbulent Bunsen flame was performed in the thin reaction zones regime. A reduced chemical model for methane-air chemistry consisting of 13 resolved species, 4 quasi-steady state species and 73 elementary reactions was developed specifically for the current simulation. The data is analyzed to study possible influences of turbulence on the flame thickness. The results show that the average flame thickness increases, in qualitative agreement with several experimental results.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF), Oak Ridge, TN (United States); Lockheed Martin Corporation, Littleton, CO (United States); UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: AC04-94AL85000; AC05-00OR22725

OSTI ID:: 1567276

Journal Information:: Journal of Physics. Conference Series, Journal Name: Journal of Physics. Conference Series Vol. 46; ISSN 1742-6588

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

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