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首页> 外文期刊>The Aeronautical Journal >Utilising CFD in the investigation of high-speed unsteady spiked body flows
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Utilising CFD in the investigation of high-speed unsteady spiked body flows

机译：利用CFD研究高速不稳定的尖峰体流

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Unsteady spiked body flows were simulated by a second order time- accurate CFD method. Laminar, axisymmetric flow was considered at Math 2.21 and Math 6 freestreams and Reynolds' numbers based on the blunt body diameter of 0.12 million and 0.13 million, respec- tively. A spiked forward facing cylinder with spike lengths between L/D = 1.00 and L/D = 2.40 was used as the model geometry. Following the numerical method's verification, the individual flow modes of oscillation and pulsation were examined. The frequency of the events was found in good agreement with the experiment, while the pressure amplitudes were overpredicted in the Math 6 cases.
机译：通过二阶时间精确的CFD方法模拟了不稳定的加标体流量。在Math 2.21和Math 6自由流中分别考虑了层流轴对称流动和雷诺数，分别基于钝器直径分别为12万和13万。模型长度为L / D = 1.00到L / D = 2.40的加长钉头朝前圆柱体。经过数值方法的验证，检查了振荡和脉动的各个流动模式。发现事件的频率与实验非常吻合，而在Math 6案例中，压力幅度被高估了。

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