Direct Numerical Simulation of Sound Generation by a Turbulent Premixed Flame

Abstract

This paper presents a direct numerical simulation (DNS) study of sound generation by a conical, turbulent premixed flame. The flame is simulated in an unconfined domain using a highorder accurate solver whereby both the near and far fields are resolved. Single-step chemistry is used to reduce the computational cost. The presented results show that flame annihilation events are significant sources of noise, which is consistent with more fundamental works that have been undertaken previously by this group and others.