| 引用本文: | 施建华,姜宗福,袁圣付,等.用LIIF法测量DF/HF化学激光器喷管混合性能的数值分析.[J].国防科技大学学报,2004,26(4):81-85.[点击复制] |
| SHI Jianhua,JIANG Zongfu,YUAN Shengfu,et al.Numerical Analysis of Using LIIF to Measure the Mixed Performance in DF/HF Chemical Laser[J].Journal of National University of Defense Technology,2004,26(4):81-85[点击复制] |
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| 用LIIF法测量DF/HF化学激光器喷管混合性能的数值分析 |
| 施建华, 姜宗福, 袁圣付, 华卫红 |
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(国防科技大学 理学院，湖南 长沙 410073)
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| 摘要: |
| 激光诱导碘荧光(LIIF)是一种很好的流场测量技术，为了验证该方法测量化学激光器流场混合性能的精度，模拟得到连续波DF/HF化学激光器的HYLTE喷管冷流场，并计算了用氦碘混合气体作为氧化剂流、用氦气作为燃料流的HYLTE喷管的流场。通过比较前一流场中的氟原子和后一流场中的碘分子的摩尔百分比分布情况得知，当作为氧化剂流的氦碘混合物中碘的质量百分比在54％左右时，用LIIF法测量DF/HF化学激光器喷管的混合情况具有较高的精度。 |
| 关键词: DF/HF化学激光器 高超音速低温喷管(HYLTE) 摩尔浓度 激光诱导碘荧光(LIIF) |
| DOI： |
| 投稿日期：2003-12-11 |
| 基金项目:高等学校先进教师基金 |
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| Numerical Analysis of Using LIIF to Measure the Mixed Performance in DF/HF Chemical Laser |
| SHI Jianhua, JIANG Zongfu, YUAN Shengfu, HUA Weihong |
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(College of Science, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The laser induced iodine fluorescence(LIIF) is an advanced technology to visualize the flowfield. To get the precision of using this method to investigate the mixed performance of the nozzle in chemical lasers, the cold flowfield of HYLTE nozzle in CW DF/HF chemical laser is simulated. The flowfield which uses the mixed gas made up of helium and iodine as the oxidant, the helium gas used as fuel is measured. The distribution of the mole fraction of the F atom in the first flowfield and the I2 molecular in the second flowfield are compared. When the mass fraction of iodine molecular in the He-I2 mixed gas is about 54%, using LIIF to measure the mixed mechanism of HTLTE nozzle in DF/HF chemical laser is more precise. |
| Keywords: DF/HF chemical laser Hypersonic Low Temperature nozzle(HYLTE) mole fraction laser induced iodine fluorescence(LIIF) |
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