Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane

The effect of the swirl clocking on three-dimensional nozzle guide vane (NGV) is investigated using computational fluid dynamics. research reports loss characteristics leaned and swept NGVs influence clocking. are built by stacking same 2D profile along different linear axes, characterized angles with respect to normal or radial direction: ε = −12° ~ +12° for γ −5° +10° airfoils. A total 40 models analyzed study effects lean sweep aerodynamic performance. To investigate clocking, analysis cases include center that was positioned at leading edge as well middle passage. prediction results show relationship changes in mass flow rate throat area not monotonic. Further observation confirms redistribution loading angle under angles; thus, design a key influencing factor In presence NGV performance changed significantly findings offer new insight opportunities improve airfoil design.