Forced Response: Turbulent Swirl Combustor
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چکیده
Since a large number of physical variables are involved in the combustion process occurring in complex swirl stabilized combustors, simple systems (burner stabilized laminar flat flames) were initially studied (see chapters 5 and 6). Having understood the dynamics of laminar flat flames and developed methodologies to build reduced order flame dynamic models, the technique developed to measure the open loop transfer function of laminar flat flame dynamics will be used for developing the transfer function for the flame dynamics (within the linear range) of swirl stabilized turbulent flames. An attempt to generate FRF between unsteady heat release rate of a swirl turbulent flame and the incoming velocity oscillations was attempted (see chapter 7) by performing URANS calculations. The FRF obtained did not show dynamic characteristics observed in the experimental study. This chapter describes the investigation of the effect of incoming mass-flux oscillations on the swirling turbulent flame
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