HYLTE喷管流场混合性能的实验和数值模拟研究
Ｅxperimental and simulative investigation of HYLTE nozzle's mixed flowfield in DF/HF chemical lasers
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摘要: 用激光诱导碘荧光的方法对高超音速低温喷管的混合性能进行了测量，并用CFD软件FLUENT模拟了喷管的流场。两种方法所得的结果吻合得较好，在所给的参数条件下，燃料穿过氧化剂流，后者先被前者压缩，然后稍有膨胀。两股气流充分混合的地方距喷管出口平面10mm左右。实验与模拟的主要差别在于两股气流相遇后，实验结果中气流方向变化不大，而在模拟结果中，气流方向改变为基本上与x轴平行。
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关键词:
- 高超音速低温（HYLTE）喷管 /
- 混合性能 /
- 激光诱导碘荧光(LIIF) /
- 荧光强度 /
- 数值模拟 /
- 摩尔分数
Abstract: The flowfield of hypersonic low temperature(HYLTE)nozzle in continuous wave DF/HF chemical lasers was visualized by laser induced iodine fluorescence(LIIF) and simulated by the CFD software FLUENT. The results from the two methods were compared and basically accord with each other. In the condition given in the article, the oxidant flow was drilled by the fuel. It was compressed first and expanded later.The two streams mixed enough at the plane 10m away from the exit plane. The experimental results show that the direction of the fuel stream changed slightly while the simulative result indicated that the fuel stream flowed almost along the x axis． -
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