Computation and Experiment of Nonequilibrium Nozzle Flow of Arc-heated Air
Computation and Experiment of Nonequilibrium Nozzle Flow of Arc-heated Air
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DOI：
10.2514/1.13603
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发表时间：
2005-10
影响因子：
2.1
通讯作者：
K. Abe;Tsuyoshi Kameyama;H. Kihara;M. Nishida;Katsuhiro Ito;H. Tanno
中科院分区：
文献类型：
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作者：
K. Abe;Tsuyoshi Kameyama;H. Kihara;M. Nishida;Katsuhiro Ito;H. Tanno
采用一个由平动温度、N2转动温度、O2转动温度、NO转动温度、N2振动温度、O2振动温度、NO振动温度和电子温度组成的八温度模型，对预热空气喷管内的非平衡流动进行了数值模拟。给出了喷管内各温度的轴向分布图，并讨论了喷管流动的热特性。还在喷嘴出口处的波长220-265 nm处测量了NO发射光谱，以通过曲线拟合方法确定NO旋转温度。计算的NO在喷嘴出口处的旋转温度与实验温度进行了比较，以讨论引入到本数值分析的喷嘴流动模型。此外，本文的计算还应用于另一台电弧加热发动机的喷管流场
Numerical simulations of a nonequilibrium nozzle flow of are-heated air were carried out using an eight-temperature model composed of translational, N 2 -rotational, O 2 -rotational, NO-rotational, N 2 -vibrational, O 2 -vibrational, NO-vibrational, and electron temperatures. The on-axis profile of each temperature in the nozzle is shown and the thermal characteristics of the nozzle flow are discussed. Measurements of NO emission spectra were also made at wavelengths 220-265 nm at the nozzle exit to determine NO rotational temperature by a curve-fitting method. Computed rotational temperature of NO at the nozzle exit was compared with the experimental temperature to discuss the nozzle flow model introduced to the present numerical analysis. Moreover, the present computation was applied to a nozzle flow in another arcjet facility