Turbomachine including a device for suppressing vibration caused by acoustical resonance

摘要

A turbomachine includes blade stages on the trajectory of a flow of air or gas delimited by a symmetrical wall along the axis of the turbomachine. The wall has orifices communicating with a cavity outside the flow of air of generally symmetrical structure. The cavity is connected to a pipe. Symmetry degrading arrangements are provided inside the cavity, for example in the form of a portion of tube mounted in the pipe to project partly into the cavity.