Large-Eddy Simulation of Aircraft Wake Evolution from Roll-Up Until Vortex Decay
Large-Eddy Simulation of Aircraft Wake Evolution from Roll-Up Until Vortex Decay
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DOI：
10.2514/1.j053671
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发表时间：
2015-03
期刊：
影响因子：
2.5
通讯作者：
T. Misaka;F. Holzäpfel;T. Gerz
中科院分区：
文献类型：
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作者：
T. Misaka;F. Holzäpfel;T. Gerz
采用大涡模拟的方法，研究了飞机尾流涡从卷升到涡衰减的演变过程。通过高保真reynolds -average Navier-Stokes模拟得到的飞机模型和周围的流场扫过地面固定的计算域来初始化尾迹。尾流初始化后，进行大涡模拟，直至尾流衰减。本文以NACA 0012机翼为试验对象，将该方法应用于巡航状态下的DLR-F6翼身模型和欧洲先进技术作战飞机机翼项目中使用的大升力配置的远程飞机模型。研究了在有和无环境湍流的情况下，涡量片从主翼脱落的详细卷起过程与卷起涡对涡循环、核心半径、分离等特性的相关性。在DLR-F6翼身和远程飞机模型中…
The evolution of aircraft wake vortices from the roll-up until vortex decay is studied by large-eddy simulation. An aircraft model and the surrounding flow field obtained from high-fidelity Reynolds-averaged Navier–Stokes simulation are swept through a ground-fixed computational domain to initialize the wake. After the wake initialization a large-eddy simulation of the vortical wake is performed until vortex decay. In this paper the methodology is tested with a NACA 0012 wing and applied to the DLR-F6 wing-body model in cruise condition and a long-range aircraft model in high-lift configuration which was used in the European Aircraft Wing with Advanced Technology Operation project. The correlation between the detailed roll-up process of the vorticity sheet shedding from the main wing and the characteristics of the rolled-up vortex pair such as vortex circulation, core radius, and separation is investigated with and without ambient turbulence. In both the DLR-F6 wing-body and the long-range aircraft models...