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对一单级跨声压气机采用了三种弯、掠动叶后设计工况下的非定常流场分别进行了数值模拟,分析了动叶弯、掠对下游静叶表面静压非定常脉动的影响.研究结果表明:三种弯、掠动叶都减轻了静叶前缘顶部和根部的静压脉动,使静叶前缘所受到的静压扰动沿径向分布更为均匀,尤其是弯掠动叶的作用最为明显;除去叶片前缘区域,三种弯、掠动叶对下游静叶的顶部压力面和吸力面的扰动都有所减弱,仍然以弯掠动叶的作用最为显著,而在静叶的中部和根部前缘区域之外的表面,动叶的弯、掠对压力扰动的影响不明显.
The unsteady flow fields under three design conditions of a single-stage transonic compressor with curved and swept blades were numerically simulated. The effects of bucket bending and sweeping on the unsteady hydrostatic pressure The results show that all the three kinds of curved and swept blades can reduce the static pressure pulsation at the top and the root of the leading edge of the vane and make the static pressure disturbance along the leading edge of the vane more evenly distributed along the radial direction, The effect of curved swept leaf is the most obvious. Except for the leading edge of the blade, the disturbance of the top pressure surface and suction surface of the downstream vane is weakened by the three kinds of curved and swept vanes, and the effect of bending swept leaf is the most significant However, the effect of bending and swepting of buckets on the pressure disturbance is not obvious at the surface outside the front and the front of the root.