Receptivity study of an acoustically excited plane jet using numerical simulation and comparison with experimental data
* Presenting author
Abstract:
We investigate the interaction of a two-dimensional plane jet plane acoustic waves propagating in the transversal direction, a classical configuration in the study of flue instruments. We focus on one of the most challenging problems of flue instrument modeling, namely, the receptivity problem, which is the process of the acoustic excitation triggering instabilities in the jet. The acoustic excitation is modeled through fluctuating boundary conditions in an incompressible CFD simulation, which is straightforward to implement in commercial computational fluid dynamics software. The results of the simulation are compared with extensive experimental data from other researchers. The comparison indicates that this model is able to predict not only the growth rate and phase speed but also the amplitude of the instability waves with reasonable accuracy.