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Shape Optimization of Supersonic Bodies to Reduce Sonic Boom Signature

机译:超音速车身的形状优化可降低音爆特征

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This paper describes the numerical simulation and shape optimization of the Lockheed SEEB-ALR and 69 Degree Delta Wing-Body for computing the sonic boom signature in the nearfield and its minimization using a genetic algorithm. For flow field calculation, the commercial CFD flow solver ANSYS Fluent is employed. The near field pressure disturbance is used to determine the strength of the sonic boom signature. The computational results for the two cases are compared with the experimental data. The body shapes are then optimized using a single-objective genetic algorithm. The results show a significant decrease in strength of the sonic boom.
机译:本文介绍了洛克希德SEEB-ALR和69度三角翼机体的数值模拟和形状优化,用于计算近场中的音爆信号并使用遗传算法将其最小化。对于流场计算,使用了商用CFD流量求解器ANSYS Fluent。近场压力扰动用于确定声波喷杆信号的强度。将两种情况的计算结果与实验数据进行比较。然后使用单目标遗传算法优化身体形状。结果表明,音爆的强度显着降低。

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