Different three-dimensional blades aerodynamic performance research comparison

作者：Feng Zi Ming^*; Gu Hui Bin; Zhang Jin Dong; Lu Yu

来源：Information Technology Journal, 2013, 12(11): 2219-2224.

DOI：10.3923/itj.2013.2219.2224

• Aero-dynamic performance
• Aerodynamic simulations
• Blade cascade
• Contrast effects
• Curved blades
• Flow efficiency
• Low-energy fluids
• Numerical study

In order to improve flow efficiency of nozzle blade cascade and study aerodynamic performance of the curved blade to the nozzle blade cascade, the straight guide blade cascade of super-critical steam turbine was selected as Prototype Blade (PB), so the Negative Curved Blade (NCB) and Positive Curved Blade (PCB) were being formed by three-dimensional modification. Aerodynamic simulation of the three blades were conducted with ANSYS-CFX, the simulation results shown that compared with the PB, the PCB was able to reduce low energy fluid accumulation in the endwall corner and weaken the endwall transverse secondary flow, the low energy fluid was involved in the main flow areas, therefore the PCB could improve the aerodynamic performance of the cascade. The NCB had the contrast effect to the aerodynamic performance of steam turbine.

• 出版日期2013