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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >NUMERICAL SIMULATION OF UNDEREXPANDED SONIC JET
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NUMERICAL SIMULATION OF UNDEREXPANDED SONIC JET

机译:超音速射流的数值模拟

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Underexpanded sonic jet is numerically simulated using commercial CFD software. Three dimensional Navier Stokes equations alongwith two equation turbulence models are solved. Computed centerline distribution and profiles of various flow variables at various axial stations agree quantitatively with experimental results. The comparison of the flow variables computed with four different two equation models reveals that k - £ and RNG k - £ models perform very well in predicting both pressure and temperature throughout the flow filed; whereas SST and k - CO models fail to predict the flow behavior beyond the first Mach disc.
机译:使用商用CFD软件对膨胀不足的声速射流进行数值模拟。求解了三维Navier Stokes方程以及两个方程湍流模型。计算得出的中心线分布和在各个轴向站的各种流量变量的轮廓与实验结果在定量上吻合。用四个不同的两个方程模型计算的流量变量的比较表明,k-£和RNG k-£模型在预测整个流场中的压力和温度方面表现非常好。而SST和k-CO模型无法预测第一个Mach圆盘以外的流动行为。

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    Directorate of Computational Dynamics Defence Research and Development Laboratory Kanchanbagh Post Hyderabad - 500 058, India;

    Directorate of Computational Dynamics Defence Research and Development Laboratory Kanchanbagh Post Hyderabad - 500 058, India;

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