With the recent advances in high-speed parallel computing, direct numerical simulation (DNS) has evolved as a valuable tool to reveal fundamental characteristics of complex reacting flow phenomena. This talk will present a brief account on the current status of the high-fidelity direct simulation approach and two examples of its application: turbulent premixed flame interaction which can provide guidance to turbulent combustion modeling; and viscosity-induced (Saffman-Taylor) flame instability which has strong relevance to the emerging micro-scale combustor technology.
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