负攻角下叶栅损失的数值模拟与改进分析

The Numerical Simulation and Improved Analysis of Cascade Loss under Negative Incidence

对某200MW机组中压末级的进行了数值模拟,针对动叶片进口大负攻角,攻角损失大的情况,对动叶片进行优化设计,提高机组的效率。

The paper carries the numerical simulation of the last stage blade in 200MW intermediate pressure turbine. For large negative incidence in blade inlet and serious incidence loss, made optimization design and increased obviously the tur- bine efficiency.