Convective merging of vortex cores in lift-generated wakes
Convective merging of vortex cores in lift-generated wakes
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DOI：
10.2514/6.1976-415
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发表时间：
1976-07
期刊：
影响因子：
--
通讯作者：
V. Rossow
中科院分区：
文献类型：
--
作者：
V. Rossow
来自飞机翼尖、襟翼边缘、发动机挂架等的几个尾涡通常在远场合并成一对，其结构决定了对遭遇飞机造成的危险。为了了解涡的合并和消散过程，本文对二维非定常无粘涡区的相互作用进行了数值研究。结果发现，离散的边界，这取决于结构和间距的旋涡，区分合并从nonmerching的情况。此外，发现符号交替的有限涡核的某些阵列经历分裂和合并，这可能有助于减轻飞机尾流造成的危险。AR B CL Ce Ct c c de d/
The several wake vortices that originate from aircraft wingtips, flap edges, engine pylons, etc. usually merge, in the far field to form a single pair, whose structure determines the hazard posed to encountering aircraft. In order to gain an understanding of the process whereby vortices merge and disperse, a numercial study was made of the interaciton of two-dimension al, time-dependent, inviscid vortical regions. It was found that discrete boundaries, which depend on the structure and spacing of the vortices, distinguish merging from nonmerging situations. Furthermore, certain arrays of finite vortex cores that alternate in sign were found to undergo division and merging that may be useful in alleviating the hazard posed by aircraft wakes. AR b CL Ce Ct c c de d/