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通过数值模拟手段对VIGV不同缝隙结构形式进行了比对分析.发现不同缝隙结构形式对VIGV的性能有很大的影响.研究结果表明当VIGV后叶无转角时,缝隙形式带来的影响较小,后叶转角增大时,影响增大.整体而言圆弧形缝隙形式在全工况下均有良好的性能.70°楔形缝隙在后叶大转角的情况下,在吸力面出口会形成小股高速射流,从而改善后叶吸力面的流动.后叶的转轴位置的不同对VIGV性能有较大的影响,选择合适的转轴位置,形成良好的缝道形式能有效提高VIGV的性能.“,”By using numerical simulation method, we analyzed the characteristic of different slot forms for Variable Camber Inlet Guide Vane. It is found that different slot forms have great influence on the performance of VIGV. The results show that when the aft- blade of the VIGV has no rotation angle, the influence of the slot form is small, while the influence of the slot form increases when the aft blade rotation angle increases. Arc-shaped slot form has better performance at all working conditions.70° wedge-shaped slot has good performance when the rotation angle of aft blade is big, for which a small high-speed jet will be formed at the exit of aft blade suction surface and improve the flow of suction surface. The different position of the rear axis has great influence on the VIGV performance. Choosing the appropriate rotational axis position and forming a good slot form can effectively improve the performance of VIGV.