Numerical simulations supporting radiating shock layer experiments with a CO2 -^sN2 test gas in the X2 free-piston impulse facility are presented. A ueq = 9.7 km/s, pooL - 5.4 x 10~5 kg/m2 expansion tunnel condition and atico = 8.5 km/s, poo = 2.35 x 10~4 kg/m3 shock tube condition are investigated. Shock layer simulations with the Euler equations, a two-temperature thermal model and coupled nonequilibrium radiation are compared with radiant intensity and temperature profiles derived from emission spectroscopy measurements of the CN Violet band system. Applying the CO2 -^sN2 reaction scheme modifications proposed by Lee, Park and Chang1 and omitting translation-electron energy exchange is found to give the closest agreement with calibrated intensity measurements.
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机译:提出了在X2自由活塞脉冲设施中使用CO2 - ^ SN2试验气体的辐射减震层实验的数值模拟。 UEQ = 9.7公里/秒,池 - 5.4 x 10〜5千克/ m2膨胀隧道条件和atico = 8.5 km / s,poo = 2.35 x 10〜4 kg / m3冲击管状况。将具有欧拉方程的冲击层模拟,与来自CN紫带系统的发射光谱测量结果导出的辐射强度和温度曲线进行比较,将两温热模型和耦合非挤出辐射进行比较。发现李,公园和昌1提出的CO2-^ SN2反应方案修改,并发现省略翻译 - 电子能源交换,得到校准强度测量最近的达成协议。
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