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数值模拟了一个带有导叶的单级低速压气机中转子叶片表面的非定常气动力.通过研究转子叶片根部、尖部前缘和尾缘局部位置的非定常气动力,阐明了由尾迹和势扰动两种非定常性诱发的气动力在转子叶片表面的叠加特性.结果表明,上游尾迹的影响波及整个转子叶片弦长范围,而下游静子叶片势扰动仅影响转子叶片尾缘附近的脉动压力,改变上、下游叶片的时序位置,当整个转子叶片表面脉动压力的幅值比最大值减小19.4%时,其叶尖前缘脉动压力的幅值仅比最大值减小9.4%.
The unsteady aerodynamic forces on the rotor blade surface in a single-stage low-speed compressor with vanes are numerically simulated.By studying the unsteady aerodynamic forces at the rotor blade root, tip and trailing edges, The results show that the effect of the upstream wake affects the chord length of the entire rotor blade while the disturbance of the downstream stator blade momentum affects only the pulsation pressure near the trailing edge of the rotor blade When the amplitudes of the pulsating pressure on the entire rotor blade surface were reduced by 19.4% from the maximum value, the amplitude of the pulsating pressure at the leading edge of the rotor blade was only 9.4% less than the maximum value.