Nozzle for combustor and gas turbine including same

A gas turbine comprising:

• a compressor configured to compress air flowing from an outside;
• a combustor configured to mix fuel with the air compressed by the compressor and combust a mixture of the fuel and air to produce combustion gas;
• and
• a turbine comprising a plurality of turbine blades rotated by combustion gas produced by the combustor,
• wherein the combustor comprises a nozzle for a combustor comprising a nozzle assembly and a duct assembly coupled to a portion of the nozzle to combust the mixture of the air and fuel and transmit the combustion gas to the turbine,
• wherein the nozzle assembly comprises:
• a cylindrical central nozzle module comprising a plurality of tubes arranged in parallel;
• a plurality of outer nozzle modules arranged around the central nozzle module and comprising a plurality of tubes arranged in parallel;
• a circumferential groove formed concavely between the central nozzle module and the plurality of outer nozzle modules;
• radial grooves formed concavely between the plurality of outer nozzle modules;
• and
• a plurality of pilot flow paths through which tubes of the plurality of tubes adjacent to the circumferential groove and the radial grooves are in fluid communication with the circumferential groove and the radial grooves.