Patent ID: 9728177
Date: 2017-08-08
CPC Classifications: F04D,F05D,G10K

Claim:
1. An acoustic resonator assembly, comprising: a first annular acoustic liner defining a first plurality of openings extending between a first annular surface of the first annular acoustic liner and a second annular surface of the first annular acoustic liner opposite the first annular surface of the first annular acoustic liner; a second annular acoustic liner defining a second plurality of openings extending between a first annular surface of the second annular acoustic liner and a second annular surface of the second annular acoustic liner opposite the first annular surface of the second annular acoustic liner; and an annular disk defining a third plurality of openings extending between a first annular surface of the annular disk and a second annular surface of the annular disk opposite the first annular surface of the annular disk, the annular disk disposed between the first annular acoustic liner and the second annular acoustic liner, and the annular disk configured to rotate relative to the first annular acoustic liner and the second annular acoustic liner to attenuate one or more frequencies of acoustic energy generated by working fluid flowing past the acoustic resonator assembly, the annular disk being configured to rotate such that at least one opening of the first plurality of openings and at least one opening of the second plurality of openings are not overlapping, wherein each opening of the third plurality of openings is formed from a plurality of holes, each hole of the plurality of holes extending between the first annular surface of the annular disk and the second annular surface of the annular disk, and the third plurality of openings being the same size as each of the first plurality of openings and the second plurality of openings.