副气流中He流量变化对流场混合状态的影响

Inffluence on the mixed flowfield performance by the flowrate of He in the secondary flow

在保持主气流流量和副气流中 I2 的流量不变的条件下 ,改变副气流中 He的流量 ,数值模拟氧碘化学激光器拉伐尔喷管内的流场混合特性。结果表明 ,随着副气流中 He的流量的增加 ,副气流垂直穿透主气流的深度逐渐变大 ,主、副气流混合状态也逐渐变好 ,直至氧碘气流混合均匀。

The circumstance of primary flow mixed with the scondary flow are numerical simulated by varying the flowrate of He in the secondary flow with the same primary flow and the same flowrate of I 2 in the secondary flow. The conclusion is obtained by comparing and analysing these results, that the penetration depth of the transverse secondary flow in the primary flow extendes and the state of primary flow mixed with the scondary flow becomes better with the flowrate of He in the secondary flow increased, until the primary flow and the scondary flow are well-distributed.