燃气轮机压气机气动性能数值模拟及试验研究

Numerical simulation and experimental research on the aerodynamic performance of a gas turbine compressor

为精确预测燃气轮机用压气机的气动性能,针对压气机实际工作中频繁出现的偏离设计点的起停工况,采用二维流线曲率法仿真分析不同转速下压气机部件的气动性能;并与搭建的亚音双级压气机试验台试验结果进行对比。结果表明:二维流线曲率法能够较好地预测燃气轮机亚音双级压气机气动特性,预测结果与试验结果相对误差在4.5%以内,可以为压气机设计和优化提供参考。

To accurately predict the aerodynamic performance of compressors used in gas turbines,particularly under the frequently encountered startup and shutdown conditions that deviate from the design point in actual operations,a two-dimensional streamline curvature method is adopted to simulate and analyze the aerodynamic performance of compressor components at various rotational speeds.The results are then compared with those obtained from experimental tests conducted on a subsonic two-stage compressor test rig that is specifically set up.The results indicate that the two-dimensional streamline curvature method is highly proficient in predicting the aerodynamic attributes of subsonic two-stage compressors in gas turbines.The relative error between the prediction results and experimental data remains within 4.5%,indicating that this method can provide valuable insights for the design and optimization of compressors.