Apparatus and method for cooling a combustor

A method for cooling a combustion chamber comprising:

• a. locating a plurality of turbulators to an exterior surface of the combustion chamber;
• and
• b. preferentially directing fluid flow across a predetermined position of the plurality of turbulators.

A method for cooling a combustion chamber comprising:

• a. directing a fluid flow through a plenum between an exterior surface of the combustion chamber and a sleeve that circumferentially surrounds at least a portion of the exterior surface;
• and
• b. preferentially directing the fluid flow across a predetermined position of a plurality of turbulators in the plenum.

A method for cooling a combustion chamber comprising:

• a. directing a fluid flow into a terminal end of a sleeve that circumferentially surrounds at least a portion of an exterior surface of the combustion chamber, wherein the terminal end of the sleeve forms a perimeter around the exterior surface and the perimeter has a flared opening around at least a portion of the perimeter to define an airflow inlet opening;
• and
• b. preferentially directing the fluid flow across a predetermined position of a plurality of turbulators between the sleeve and the exterior surface.