Summary of the Tandem Cylinder Solutions from the Benchmark Problems for Airframe Noise Computations-I Workshop
Summary of the Tandem Cylinder Solutions from the Benchmark Problems for Airframe Noise Computations-I Workshop
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DOI：
10.2514/6.2011-353
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发表时间：
2011-01
期刊：
影响因子：
5.5
通讯作者：
D. Lockard
中科院分区：
文献类型：
--
作者：
D. Lockard
总结了第一届机身噪声计算基准问题研讨会串列气缸类别的15份意见书。虽然几何学相对简单，但这个问题涉及复杂的物理问题。研究人员使用了各种块结构、覆盖、非结构和嵌入的笛卡尔网格技术和大量的计算资源来模拟流动。将计算结果与两个实验装置的实验数据进行了比较。总体而言，模拟捕捉到了流动的总体特征，但解决计算噪声所需的所有细节仍然具有挑战性。特别是，如何最好地模拟实验过渡带的效果，以及相关的高雷诺数效应，尚不清楚。此外，捕捉这种跨度差异被证明是困难的。
Fifteen submissions in the tandem cylinders category of the First Workshop on Benchmark problems for Airframe Noise Computations are summarized. Although the geometry is relatively simple, the problem involves complex physics. Researchers employed various block-structured, overset, unstructured and embedded Cartesian grid techniques and considerable computational resources to simulate the flow. The solutions are compared against each other and experimental data from 2 facilities. Overall, the simulations captured the gross features of the flow, but resolving all the details which would be necessary to compute the noise remains challenging. In particular, how to best simulate the effects of the experimental transition strip, and the associated high Reynolds number effects, was unclear. Furthermore, capturing the spanwise variation proved difficult.