Influence of different boundary conditions on modulating inlet pressure and velocity of regenerator.

In present paper, a model driven by double loudspeakers is proposed, which can widely modulate acoustic pressure and oscillating velocity at the inlet boundary of regenerator. For the sake of contrastive analysis, other two models driven by single loudspeaker are built up. Based on linear thermoacoustic theory, the governing equations concerning different boundary conditions in three models are setup and discussed. The modulating ranges of inlet pressure and velocity in three models are compared. It verifies that the model driven by double loudspeakers is preferable than other two models for modulating acoustic pressure and oscillating velocity. [ABSTRACT FROM AUTHOR]