A turbine nozzle (100) includes an airfoil (400) that extends in span from an inner band (200) to an outer band (300) where the inner band (200) and the outer band (300) define inner and outer flow boundaries of the turbine nozzle (100). At least one of the inner band (200) and the outer band (300) define a first set of cooling channels (214a, 314a) and a second set of cooling channels (214b, 314b) formed beneath a respective gas side surface (218, 318) of the corresponding inner band (200) or outer band (300). The inner band (200) and/or the outer band (300) further define a coolant distribution plenum (216, 316) that is in fluid communication with the first and second sets of cooling channels (214a, 314a). The coolant distribution plenum (216, 316) provides a stream of coolant to at least one of the first set of cooling channels (214a, 314a) and the second set of cooling channels (214b, 314b).
展开▼
