Abstract
The effects of geometric parameters and flow on the resonance flequency characteristics of Helmeholtz resonator type silencers have been investigated. It is shown that the end correction of a resonator is varied by the dimensionless frequency, the parameters on the shape of connector open-ends and connector itself, and the flow velocity. Consequently, the resonance frequency is shifted owing to the change of the effective length of a connector. In this case, the resonance energy at a silencer entrance is affected by the ratio of connector diameter to duct width as well as the flow velocity.
