关键词: 接受孔;预旋系统;温降特性;总压损失;设计

Abstract: In order to compare the airflow characteristics with different shape receiver holes， the pre-swirl system was studied by numerical simulation method. The results show that the inlet cross-section of the shrinkage receiver holes has a larger airflow area and a smaller airflow relative velocity， it is optimal in pre-swirl systems， followed by ladder-like， and the final is the straight hole type. With the same rotating Reynolds number， compared to the straight receiver holes， the dimensionless temperature drop of the shrinkage receiver holes increased by 5.8%. Simultaneously， the total pressure loss coefficient of the shrinkage receiver holes is reduced by 3.0%. For the three types of receiver holes， the dimensionless temperature drop and total pressure loss coefficient increase with the increase of the inlet and outlet pressure ratio. With the same pressure ratio， the shrinkage receiver holes has the largest dimensionless temperature drop and the lowest total pressure loss coefficient.

Key words: Receiver holes;Pre-swirl system;Temperature drop characteristics;Total pressure loss;Design