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DLR TAU Near-Field Simulations for the Third AIAA Sonic Boom Prediction Workshop
Journal of Aircraft ( IF 1.5 ) Pub Date : 2021-07-14 , DOI: 10.2514/1.c036397
Jochen Kirz 1
Affiliation  

The accurate prediction of the sonic boom is essential for the development of a future low-boom supersonic aircraft. In this paper, the best practice for predicting near-field pressure signatures with the German Aerospace Center (DLR) TAU code is applied for geometries and grids provided by the third AIAA Sonic Boom Prediction Workshop. The near-field part of the workshop provided two cases, the biconvex case and the NASA C608 case. Both geometries were analyzed by DLR. The biconvex case is used to study shock–plume interactions and the NASA C608 case is used to assess the status of near-field simulations for a realistic low- boom flight demonstrator. Results for the DLR TAU simulations on the workshop-provided grids are presented for different grid refinement levels using Reynolds-averaged Navier–Stokes simulations. In addition to the provided grids, a setup for mixed-element grids with varying setups is described. The predicted near-field signatures agree very well with other workshop participants’ results and wind-tunnel data.



中文翻译:

第三届 AIAA 音爆预测研讨会的 DLR TAU 近场模拟

音爆的准确预测对于未来低繁荣超音速飞机的发展至关重要。在本文中,使用德国航空航天中心 (DLR) TAU 代码预测近场压力特征的最佳实践应用于第三届 AIAA Sonic Boom Prediction Workshop 提供的几何和网格。研讨会的近场部分提供了两个案例,双凸面案例和 NASA C608 案例。DLR 分析了两种几何形状。双凸面案例用于研究冲击-羽流相互作用,NASA C608 案例用于评估真实低臂飞行演示器的近场模拟状态。使用雷诺平均 Navier-Stokes 模拟针对不同的网格细化级别显示了车间提供的网格上的 DLR TAU 模拟结果。除了提供的网格之外,还描述了具有不同设置的混合元素网格的设置。预测的近场特征与其他研讨会参与者的结果和风洞数据非常吻合。

更新日期:2021-07-15
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