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| Comparative Research of Mixed-phase Icing at High and Low Velocities of Transonic Fan Blades |
| Received:March 21, 2023 Revised:May 09, 2023 |
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| DOI：10.7643/issn.1672-9242.2023.07.010 |
| KeyWord:mixed-phase icing impact angle ice crystal temperature high speed low speed fan blades |
| Author | Institution |
| REN Hu-hu |
School of Aero-engine, Shenyang Aerospace University, Shenyang , China;Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China |
| XU Qiang-ren |
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China;Key Laboratory of Light-duty Gas-turbine, Chinese Academy of Sciences, Beijing , China |
| WANG Li-zhi |
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China;Key Laboratory of Light-duty Gas-turbine, Chinese Academy of Sciences, Beijing , China |
| LI Guang-chao |
School of Aero-engine, Shenyang Aerospace University, Shenyang , China |
| ZHAO Wei |
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China;Key Laboratory of Light-duty Gas-turbine, Chinese Academy of Sciences, Beijing , China;School of Aeronautics and Astronautics, University of Chinese Academy of Sciences, Beijing , China |
| ZHAO Qing-jun |
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China;Key Laboratory of Light-duty Gas-turbine, Chinese Academy of Sciences, Beijing , China;School of Aeronautics and Astronautics, University of Chinese Academy of Sciences, Beijing , China;Beijing Key Laboratory of Distributed Combined Cooling Heating and Power System, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing , China |
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| Abstract: |
| The work aims to obtain the influence of icing on the mixed phase of transonic fan blades at high and low velocities. CFX was used to obtain the airflow field data of fan blades, and FENSAP-ICE was used to obtain ice shapes. The ice shape at high and low velocities of mixed phase icing was analyzed through the temperature of supercooled droplets and ice crystals and the angle of impact on blades. The results showed that when the fan blade worked at high and low velocities, the motion states of supercooled droplets and ice crystals varied significantly. At high velocities, the airflow in the flow field was transonic flow, and the impact angle between supercooled droplets and ice crystals was different. The root area with large impact angle was easier to collect supercooled water droplets and ice crystals; at low velocities, the impact angle of supercooled droplets, ice crystals and blades was less than 10° in most areas, which made it more difficult to capture supercooled droplets and ice crystals after they collided with the blades. The temperature difference of the blade when the fan blade ran at high and low velocities made the supercooled droplets easy to condense directly at low velocities, and the amount of uncondensed water films was very small. However, the ice crystal surface was not easy to be captured because the water film was not formed, so the final ice accretion was mainly the ice accretion formed by the supercooled droplets. When the fan blade mixes phase icing at high velocities, the temperature in the flow passage rises faster, the water film is not easy to condenses, and the ice crystal surface is easy to be molten, which promotes the ice accretion of ice crystals. |
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