Turbulent and transitional flow around the AVT-183 diamond wing

被引：5
|
作者：
Buzica, Andrei [1 ]
Breitsamter, Christian [1 ]
机构：
[1] Tech Univ Munich, Dept Mech Engn, Chair Aerodynam & Fluid Mech, D-85748 Garching, Germany
来源：
AEROSPACE SCIENCE AND TECHNOLOGY | 2019年 / 92卷
关键词：
VORTICAL FLOW; MODELS;
D O I：
10.1016/j.ast.2019.06.025
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
For their low-radar signature, diamond-wing configurations with blunt leading edges recently attract attention for unmanned applications. For this purpose, the AVT-183 genetic configuration is investigated both experimentally and numerically. The flow field is complex, exhibiting both vortical structures and attached flow regions. Despite numerous investigations of the fully turbulent case, little research focuses on the naturally transitioning boundary layer. This paper discusses the transitional and fully turbulent case comparatively. In addition, transient and steady flow-field measurements and oil-flow visualization complete the aerodynamic data set of the AVT-183 diamond-wing model. The separation phenomenon is discussed in detail for both laminar and turbulent leading-edge separation. Low and high frequency fluctuations correlate with the primary and the secondary separation processes, respectively, which are also analyzed. (C) 2019 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：520 / 535
页数：16
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