Effects of stator splitter blades on aerodynamic performance of a single-stage transonic axial compressor
DOI:
https://doi.org/10.15282/jmes.14.4.2020.05.0579Keywords:
Transonic axial compressor, stator splitter blades, RANS analysis, total pressure ratio, adiabatic efficiency, stall margin, stable range extensionAbstract
Splitter blades located between stator blades in a single-stage axial compressor were proposed and investigated in this work to find their effects on aerodynamic performance and operating stability. Aerodynamic performance of the compressor was evaluated using three-dimensional Reynolds-averaged Navier-Stokes equations using the k-e turbulence model with a scalable wall function. The numerical results for the typical performance parameters without stator splitter blades were validated in comparison with experimental data. The numerical results of a parametric study using four geometric parameters (chord length, coverage angle, height and position) of the stator splitter blades showed that the operational stability of the single-stage axial compressor enhances remarkably using the stator splitter blades. The splitters were effective in suppressing flow separation in the stator domain of the compressor at near-stall condition which affects considerably the aerodynamic performance of the compressor.
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