Thermo-acoustic damper in a combustor liner

A combustor comprising:

• a combustor liner defining a combustion chamber, the combustor liner comprising:
• a skeleton mesh structure;
• and
• a plurality of hollow planks coupled to the skeleton mesh structure, one or more of the plurality of hollow planks comprising:
• an inner wall having a plurality of inner openings and one or more inner holes;
• an outer wall having one or more outer openings and a plurality of outer holes;
• a plurality of lateral walls coupled to the inner wall and the outer wall to define a cavity;
• and
• a partition wall connected to the plurality of lateral walls, provided between the inner wall and the outer wall, and dividing the cavity into a first sub-cavity and a second sub-cavity,
• wherein the outer wall, the partition wall, and the plurality of lateral walls define the first sub-cavity, and the inner wall, the partition wall, and the plurality of lateral walls define the second sub-cavity,
• wherein the one or more outer openings in the outer wall communicate with the first sub-cavity,
• wherein the plurality of outer holes in the outer wall communicate through a plurality of tubes with the second sub-cavity to bypass the first sub-cavity,
• wherein the plurality of inner openings in the inner wall communicate with the second sub-cavity,
• wherein the one or more inner holes in the inner wall communicate with the first sub-cavity through one or more bypass tubes to bypass the second sub-cavity, and
• wherein the first sub-cavity or the second sub-cavity or both are frequency tuned to reduce combustion dynamic frequencies generated with the combustion chamber.