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Experimental and Numerical Analysis of the Flow Patterns around a Sounding Rocket in the Transonic Regime

机译:跨音速状态下探空火箭绕流模型的实验与数值分析

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The present study is aimed at presenting an experimental and numerical analysis of the flow patterns on the fore-body section of a sounding rocket model in the transonic regime. The experiments were carried out in the Pilot Transonic Wind Tunnel, known as TTP, of the Institute de Aeronautica e Espaco (IAE), in Sao Jose dos Campos, Brazil, for Mach numbers ranging from 0.6 to 1.0 and zero angle of attack, using the techniques of Pressure Sensitive Paint (PSP), pressure taps and the schlieren visualization method on a 1:34 scaled model of a sounding rocket. In order to gain more insights about the complex flow phenomena occurring in the transonic region, numerical simulations were also carried out Complex phenomena as shock waves, boundary layer deatachment, and expansion waves were clearly identified from the PSP pressure field and from the schlieren images. Good agreements between the PSP, pressure taps and numerical simulation results were observed.
机译:本研究旨在对跨音速状态的探空火箭模型的前身截面上的流动模式进行实验和数值分析。实验是在巴西圣何塞多斯坎波斯的西班牙航空研究所(IAE)的跨音速试验风洞中进行的,马赫数范围为0.6到1.0,攻角为零。 1:34比例的探空火箭模型上的压敏涂料(PSP)技术,压力水龙头和schlieren可视化方法。为了获得对跨音速区域中发生的复杂流动现象的更多了解,还对复杂现象进行了数值模拟,例如从PSP压力场和schlieren图像中清楚地识别出了冲击波,边界层分离和膨胀波。观察到PSP,压力水龙头和数值模拟结果之间的良好一致性。

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