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针对不同动叶稠度的轴流涡轮基元级的流动情况进行了非定常数值模拟,探究了动叶稠度对涡轮基元级转子的非定常势干涉、静叶尾迹与动叶的干涉及基元级性能非定常性的影响机制。研究结果表明,在一定的动叶稠度范围内,转子非定常势干涉的强度随着动叶稠度的增加而迅速减小,而在上游静子中的影响范围与动叶稠度关系不大;动叶稠度的变化通过引起静叶尾迹强弱和转子通道中流动状态的改变来影响静叶尾迹与动叶干涉的强弱;而基元级性能的非定常性受尾迹干涉强弱的影响。
The unsteady numerical simulation of axial turbine motive flow with different rotor blade consistency is carried out. The influences of rotor blade consistency on unsteady rotor interference, stator blade wake and rotor blade interference, The mechanism of unsteady performance. The results show that the strength of unsteady rotor interference decreases with the increase of bucket consistency within a certain range of bucket consistency, while the influence range in the upstream stator is not related to the bucket consistency. The variation of the consistency affects the strength of the wake of the vane and the movement of the blade by changing the strength of the wake of the stator vane and the flow state in the rotor channel. The unsteadiness of the elementary performance is affected by the strength of the wake interference.