Influence of two-dimensional roughness element on boundary layer structure in the favourable pressure gradient region of the swept wing

被引：1
|
作者：
Tolkachev, Stepan [1 ]
Kozlov, Victor [1 ]
Kaprilevskaya, Valeriya [1 ]
机构：
[1] Khristianovich Inst Theoret & Appl Mech, Novosibirsk, Russia
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING | 2020年 / 234卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
Cross-flow instability; hot-wire anemometry; liquid crystal thermography; localized roughness element; secondary instability; swept wing; two-dimensional roughness element; SECONDARY INSTABILITY;
D O I：
10.1177/0954410019841776
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this article, the results of research about stationary and secondary disturbances development behind the localized and two-dimensional roughness elements are presented. It is shown that the two-dimensional roughness element has a destabilizing effect on the disturbances induced by the three-dimensional roughness element lying upstream. In this case, the two-dimensional roughness element causes the appearance of stationary structures, and then secondary perturbations, whose frequency range lies lower than in the case of the stationary vortices excited by a three-dimensional roughness element.
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页码：20 / 27
页数：8
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