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<p>In this paper, a self-circulating jet structure applied to a shrouded stator blade is designed and evaluated. Numerical simulation studies are conducted in both single stator and single-stage compressor environment, and the following key conclusions are drawn: Self-circulating jet significantly enhances stator performance in the single stator environment, achieving a 12.9% reduction in total pressure loss and a 30.7% decrease in entropy increase loss. In a single-stage compressor, under the near-surge condition, the self-circulating jet improves the efficiency by 0.47% and the pressure ratio by 0.23%; under the highest efficiency condition, the isentropic efficiency of the compressor increases by 0.58% and the pressure ratio increases by 1.36%. The self-circulating jet effectively mitigates flow separation in the stator blade root corner regions, attenuates the passage vortex near the rotor hub, and increases the mass flow capacity through the root passages. Furthermore, under the three-dimensional flow effects induced by the stator, the tip blockage is weakened, the total pressure loss is reduced, and the stator performance is improved.</p>

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A Self-Circulating Jet Structure Applied to Shrouded Stator of Compressor

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Xiaozhi Kong,
  • Tianshuo Huang,
  • Yuxin Liu,
  • Yuan Liu,
  • Xiangjun Li,
  • Hong Wang

摘要

In this paper, a self-circulating jet structure applied to a shrouded stator blade is designed and evaluated. Numerical simulation studies are conducted in both single stator and single-stage compressor environment, and the following key conclusions are drawn: Self-circulating jet significantly enhances stator performance in the single stator environment, achieving a 12.9% reduction in total pressure loss and a 30.7% decrease in entropy increase loss. In a single-stage compressor, under the near-surge condition, the self-circulating jet improves the efficiency by 0.47% and the pressure ratio by 0.23%; under the highest efficiency condition, the isentropic efficiency of the compressor increases by 0.58% and the pressure ratio increases by 1.36%. The self-circulating jet effectively mitigates flow separation in the stator blade root corner regions, attenuates the passage vortex near the rotor hub, and increases the mass flow capacity through the root passages. Furthermore, under the three-dimensional flow effects induced by the stator, the tip blockage is weakened, the total pressure loss is reduced, and the stator performance is improved.