CUED Publications database

Curvature and wrinkling of premixed flame kernels-comparisons of OH PLIF and DNS data

Gashi, S and Hult, J and Jenkins, KW and Chakraborty, N and Cant, RS and Kaminski, CF (2004) Curvature and wrinkling of premixed flame kernels-comparisons of OH PLIF and DNS data. In: UNSPECIFIED p. 67..

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Abstract

The effects of curvature and wrinkling on the growth of turbulent premixed flame kernels were studied using both two-dimensional OH Planar Laser-Induced Fluorescence (PLIF) and three-dimensional Direct Numerical Simulation (DNS). Comparisons of results between the two approaches showed a high level of agreement, providing confidence in the simplified chemistry treatment employed in the DNS, and indicating that chemistry might have only a limited influence on the evolution of the freely propagating flame. The usefulness of PLIF in providing data over a wide parameter range was illustrated using statistics obtained from both CH4/air and H2/air mixtures, which show markedly different behavior due to their different thermo-diffusive properties. The results provided a demonstration of the combined power of PLIF and DNS for flame investigation. Each technique compensate for the weaknesses of the other, and to reinforce the strengths of both.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:44
Last Modified: 26 Nov 2014 19:06
DOI: