Expanded vane to control secondary flow and optimal diffuser performance

摘要

A turbine vane (36) adapted to be disposed in a turbine (16) includes a suction side (50), a pressure side (48), and a bulge (52) disposed on the suction side (50). The suction side (50) extends between a leading edge (44) and a trailing edge (46) in an axial direction (28) and transverse to a longitudinal axis (150) of the turbine vane (36) and extends over a height (54). the turbine vane (36) in a radial direction (32) along the longitudinal axis (150). The pressure side (48) is disposed opposite the suction side (50) and extends between the leading edge (44) of the turbine vane (36) and the trailing edge (46) of the turbine vane (36) in the axial direction (28) and extends over the height (54) of the turbine vane (36) in the radial direction (32). The bulge (52) is located on the suction side (50) and projects relative to the other part of the suction side (50) in a direction transverse to both the radial (32) and axial directions (28). The turbine vane (36) has a first circumference (112) defined at a first cross section (106) at a first location along the height (54) of the turbine vane (36) by selected sets of coordinates listed in Table 1 ,