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Summary and Statistical Analysis of the First AIAA Sonic Boom Prediction Workshop

机译:首届AIAA音爆预测研讨会的总结和统计分析

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A summary is provided for the First AIAA Sonic Boom Workshop held 11 January 2014 in conjunction with AIAA SciTech 2014. Near-field pressure signatures extracted from computational fluid dynamics solutions are gathered from nineteen participants representing three countries for the two required cases, an axisymmetric body and simple delta wing body. Structured multiblock, unstructured mixed-element, unstructured tetra-hedral, overset, and Cartesian cut-cell methods are used by the participants. Participants provided signatures computed on participant generated and solution adapted grids. Signatures are also provided for a series of uniformly refined workshop provided grids. These submissions are propagated to the ground and noise measures are computed. This allows the grid convergence of a noise measure and a validation metric (difference norm between computed and wind tunnel measured near-field signatures) to be studied for the first time. A statistical analysis is also presented for these measures. An optional configuration includes fuselage, wing, tail, flow-through nacelles, and blade sting. This full configuration exhibits more variation in eleven submissions than the sixty submissions provided for each required case. Recommendations are provided for potential improvements to the analysis methods and a possible subsequent workshop.
机译:提供了与AIAA SciTech 2014一起于2014年1月11日举行的第一届AIAA声波轰炸机研讨会的摘要。从计算流体动力学解决方案中提取的近场压力特征是从代表三个国家的19个参与者中收集的,这是两种需要的情况,一个轴对称体。和简单的三角翼机体。参与者使用结构化的多块,非结构化的混合元素,非结构化的四面体,覆盖和笛卡尔切细胞方法。参与者提供了根据参与者生成的网格和解决方案调整的网格计算出的签名。还为一系列经过统一改进的车间提供的网格提供了签名。这些意见被传播到地面,并计算出噪声测量值。这允许首次研究噪声度量和验证度量(计算的和风洞测量的近场特征之间的差异范数)的网格收敛。还提供了针对这些措施的统计分析。可选配置包括机身,机翼,机尾,流通式机舱和叶片刺。与为每个所需案例提供的60个提交相比,此完整配置在11个提交中显示出更多的变化。提供了有关可能改进分析方法和可能的后续研讨会的建议。

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