| Citation: | Liu Yang, Jiang Qifeng, Sun Qi, et al. Evolution and loss mechanism of tip leakage flow in transonic compressor under gas-solid two-phase conditions[J]. Journal of Aerospace Power, 2026, 41（X）：20250480 doi: 10.13224/j.cnki.jasp.20250480
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To gain in-depth insights into the dynamic evolution law of the tip clearance leakage vortex structure in a compressor and its impact on performance under gas-solid two-phase conditions, numerical simulations were carried out on the Rotor37 transonic compressor under both single-phase and gas-solid two-phase operating conditions using Fluent software, based on the Detached Eddy Simulation DES (DES)-Discrete Phase Model (DPM) coupling model. The Omega vortex identification criterion was adopted to identify the tip clearance leakage vortex structure, and the entropy production rate was utilized as the characteristic parameter for quantifying the compressor’s flow losses. Results demonstrated that, compared with the single-phase condition, the supersonic region in the flow passage at the 90% blade height section of the compressor blade was significantly narrowed under the gas-solid two-phase condition, the shock wave position shifted upstream, and a deceleration transition zone appeared at the leading edge of the shock wave. Moreover, identification of the tip leakage vortex structures under the two operating conditions via the Omega criterion revealed that the particle phase significantly promoted the shedding and reorganization of the vortex structures. Additionally, observations of the variations in entropy production rate at different positions on the compressor blades showed that the presence of the particle phase not only significantly increased the compressor’s flow losses, but also reduced the compressor’s pressurization capacity and isentropic efficiency.
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