CABARET method on unstructured hexahedral grids for jet noise computation
CABARET method on unstructured hexahedral grids for jet noise computation
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非结构化六面体网格上的 CABARET 方法用于计算喷射噪声
DOI：
10.1016/j.compfluid.2013.08.011
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发表时间：
2013
影响因子：
2.8
通讯作者：
Faranosov G
中科院分区：
文献类型：
--
作者：
Faranosov G
本文采用一种新的可扩展的高分辨率CABARET MILES方法和一种用于远场噪声模拟的多孔Ffowcs Williams-Hawking公式计算了高速湍流射流的流动和噪声，该湍流射流对应于一个收敛的轴对称喷嘴和射流排气空气动力学和噪声实验的静态等温条件。计算模拟结果提供了一系列的网格分辨率。简单的手段，湍流动能和四阶速度相关性的结果进行了比较与实验数据和参考LES-Smagorinsky计算从文献中。远场噪声预测是基于几个积分控制面，这是用于模型的一致性。并与实验结果进行了比较。预测的远场噪声的方向性进行了分析与方位角分解技术和喷气噪声数据从TsAGI实验数据库进行比较。
A new scalable high-resolution CABARET MILES method coupled with a porous Ffowcs Williams–Hawking formulation for far-field noise modelling is applied for the computation of flow and noise from a high-speed turbulent jet, which corresponds to a converging axi-symmetric nozzle and static isothermal conditions of the Jet Exhaust Aerodynamics and Noise experiment. Computational simulation results are provided for a range of grid resolutions. The results for simple means, turbulent kinetic energy, and fourth-order velocity correlations are compared with the experimental data and with a reference LES-Smagorinsky calculation from the literature. Far-field-noise predictions are obtained based on several integral control surfaces, which are used for consistency of the model. The far-field noise spectra are also compared with the experiment. The directivity of the far field noise predicted is analysed with the Azimuthal Decomposition Technique and compared with jet noise data from the TsAGI experimental database.