Thermal-stress response of hypersonic rudder to laser irradiation
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摘要: 建立了基于流固耦合的高超声速飞行器舵面结构在激光辐照下静气动弹性模型，流体控制方程为三维雷诺平均N-S方程，分别采用了中心格式和AUSM+up格式对粘性项和对流项进行空间离散，时间推进采用了高斯-塞德尔隐式推进方法，湍流粘性系数求解使用Menter SST模型。利用冯卡门研究所高超风洞实验结果对模型进行了校核，预估了激光辐照对高超舵面的热力影响。结果表明，气动力/热计算模型与实验数据符合较好，能够准确模拟高超飞行器的热力参数，根据模型外推结果，激光在较低功率下加热高超飞行器舵面可能导致舵面材料弹性模量大大降低，继而发生弯曲发散而折断，高超飞行器可能因此发生气动失稳而坠毁。Abstract: A static aero elastic model of hypersonic aircraft under laser irradiation was built based on computational fluid dynamics (CFD) and computational structural dynamics coupling numerical computational methodology. The flow was governed by 3-D Reynolds averaged Navier-Stokes equations. To split the viscosity flux and the convective flux of the NS equations, the second order central scheme and the AUSM+up scheme were adopted respectively. With the implicit Gauss-Seidel scheme, the code was advanced in time. The Menter SST turbulence model was used for turbulence simulations. The model was proofread with the experiment data from von Karman Institute hypersonic wind tunnel. Hypersonic aircraft wing under laser irradiation was simulated with this model. The results indicated that the energy addition could reduce the Youngs modulus of hypersonic rudder. Hypersonic aircraft may prang due to the destroy of the rudder.
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Key words:
- laser irradiation /
- hypersonic rudder /
- thermal-stress analysis /
- numerical simulation
期刊类型引用(4)
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百度学术2. 汪航，汪玉琴，张蓉竹. 完美涡旋光束在大气湍流中的斜程传输特性. 强激光与粒子束. 2023(10): 44-50 . 本站查看3. 卜洋，杨志，赵丽娟，徐志钮. 大气湍流对基于轨道角动量的自由空间光通信影响及解决方案综述. 半导体光电. 2022(06): 1099-1108 . 百度学术4. 蔡敏，荣嵘. 基于数学模型的低衍射光束结构参数优化方法. 激光杂志. 2020(11): 15-19 . 百度学术其他类型引用(10)
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