| 引用本文: | 曾明,黄华,柳军,等.高超声速风洞热化学非平衡流场辐射谱的数值计算.[J].国防科技大学学报,2002,24(4):1-4.[点击复制] |
| ZENG Ming,HUANG Hua,LIU Jun,et al.Numerical Computation of Radiation Spectrum in Hypersonic Tunnel Thermochemical Nonequilibrium Flowfield[J].Journal of National University of Defense Technology,2002,24(4):1-4[点击复制] |
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| 高超声速风洞热化学非平衡流场辐射谱的数值计算 |
| 曾明, 黄华, 柳军, 瞿章华 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 以轴对称的热化学非平衡N-S方程为控制方程，采用双温度11组元反应气体模型，数值求解高超声速热化学非平衡流场。在此基础上，采用“线—线”精细辐射模型计算流场的辐射谱特性，在0.15～2μm区间计算了40000个光谱分布点处的辐射发射、吸收系数，得到了高焓风洞实验条件下的流场辐射光谱分布及该条件下主要辐射组元NO的辐射光谱分布。计算表明，振动温度对辐射有重要影响。 |
| 关键词: 高焓风洞 热化学非平衡模型 辐射 数值计算 |
| DOI： |
| 投稿日期：2001-11-28 |
| 基金项目:湖南省自然科学基金(00JJY1001)和中科院力学所LHD开放课题项目(2001-16) |
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| Numerical Computation of Radiation Spectrum in Hypersonic Tunnel Thermochemical Nonequilibrium Flowfield |
| ZENG Ming, HUANG Hua, LIU Jun, QU Zhanghua |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Taking symmetric full Navier-Stokes equations as governing equations, using two temperature and 11 species reacting air model, the hypersonic thermochemical nonequilibrium flow is simulated numerically. Then by using the "line-by-line" radiation model to compute radiation characteristics for the flowfield, the emission and absorption coefficients for 40000 wavelength points in 0.15～2μm are calculated. The radiation spectrum of air mixtrue and the main radiation specie NO in high enthalpy wind tunnel experiments is obtained. The calculation results indicate that vibration temperature exerts important effects on radiation. |
| Keywords: high enthalpy tunnel thermochemical nonequilibrium model radiation numerical computation |
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