The Effect of Vane Number in Casing Treatment of an Axial-Flow Compressor

Abstract Improvement of the operating range compressors will help power and energy plant to work more flexibly integrate with other generation systems. The stall, rotating resulting surge are most dominant limiting phenomenon in axial compressor envelop. Several active passive methods have been employed eliminate occurring these phenomena extend compressors’ stable range. Among these, casing treatment is one useful methods. This study aims investigate effect number stationary blades on performance stall margin an through numerical simulation. Casing treatments two different configurations 33.3 53.5% rotor blade tip exposure six numbers vanes, 30, 40, 60, 80, 90, 120, simulated computational fluid dynamics ANSYS software. simulation validated available experimental data. results reveal that a high configuration, highest vanes provides best for compressor. However, low optimum 90 33.3% exposure, can be found proposed procedure based improvement.