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This technical note evaluates the use of Helmholtz resonators to control acoustic instabilities inside combustion chambers. Tests were conducted with non-reactive flow. The methodology to design the resonators and calculate their acoustic performance is presented, as well as experimental results. The resonators effectively dampened oscillations at their design frequency but had a narrow effective range. Their presence also sometimes amplified other frequencies. Flow velocity inside the chamber influenced at

Author

uamiranda3518

Language

EN