中文摘要：

在轴对称尾流撞击实验的基础上,进行了多种非轴对称尾流撞击实验研究.当合理安排进口导叶的数目和周向分布形式时,进口导叶(IGV)的非轴对称尾迹能对下游转子流场产生有益的非定常耦合激励作用.与轴对称尾流撞击方案相比,非轴对称尾流撞击方案在保持了有益的高频激励信号的同时,引入了合适的低频方波激励信号和其他有益的副频激励信号,使得导叶尾迹更容易与压气机中的复杂涡系产生耦合激励作用,例如通道涡、间隙涡和尾迹分离涡等.实验结果显示,非轴对称尾流撞击方案B能使压气机的最高效率提高1.2%,总压升和稳定裕度也略有增加.

英文摘要：

Based on the axisymmetric wake impact experiment,several non-axisymmetric wake impact experiments were carried out.When the number and circumferential positions of inlet guide vanes(IGV) were logical,the wakes of non-axisymmetric IGVs could make beneficial unsteady excitation on downstream rotor field.In these experiments,some suitable non-axisymmetric wake impact plans worked better than the axisymmetric wake impact plan.As compared to the axisymmetric wake impact plan,the non-axisymmetric wake impact plan...