Effect of the trailing-edge flap on tones due to self-excited oscillation within the leading-edge slat cove

doi:10.1177/09544100221111305

IMECH-IR > 流固耦合系统力学重点实验室

	Effect of the trailing-edge flap on tones due to self-excited oscillation within the leading-edge slat cove
	Lu WS(陆维爽); Liu, Peiqing ; Guo, Hao
发表期刊	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
	2023-03
卷号	237 期号:4 页码:853-864
ISSN	0954-4100
摘要	To study the tonal noise characteristics of the leading-edge slat of high-lift configurations with and without a deployed trailing-edge flap, experiments are conducted in the D5 aero-acoustic wind tunnel at Beihang University. The numerical simulation method is used to obtain the necessary flow information. The experimental results show that low to mid frequency tonal noise generated by self-excited oscillation within the slat cove is dominant and its corresponding frequencies are basically unchanged whether the flap is deployed or not. However, the primary mode of self-excited oscillation within the slat cove switches to a higher one when the flap is deployed. Further analysis results demonstrate that variation of the primary mode is found to be closely related to the flow characteristics in the self-excited oscillation feedback loop. The number of the primary mode is generally proportional to the ratio between the vortex shedding frequency and the self-excited oscillation frequency. The flap being deployed results in an increase in the effective angle of attack of both the main wing and slat, which leads to a thinner separating boundary layer, thus increasing further the vortex shedding frequency and this ratio.
关键词	high-lift device leading-edge slat aerodynamic noise acoustic characteristics trailing-edge flap
学科领域	Engineering, Aerospace ; Engineering, Mechanical
DOI	10.1177/09544100221111305
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000824775700001
项目资助者	National Natural Science Foundation of China [11502012, 11850410440, 11772033, 11721202]
论文分区	Q4
力学所作者排名	1
RpAuthor	Guo, H (corresponding author), Beihang Univ, Inst Fluid Mech, Beijing 100191, Peoples R China.
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90216
专题	流固耦合系统力学重点实验室
作者单位	1.{Lu Weishuang, Liu Peiqing, Guo Hao} Beihang Univ Minist Ind & Informat Technol Key Lab Aeroacoust Beijing Peoples R China 2.{Lu Weishuang, Liu Peiqing, Guo Hao} Beihang Univ Minist Educ Key Lab Fluid Mech Beijing Peoples R China 3.{Lu Weishuang, Liu Peiqing, Guo Hao} Beihang Univ Sch Aeronautic Sci & Engn Beijing Peoples R China 4.{Lu Weishuang} Chinese Acad Sci Inst Mech Beijing Peoples R China
推荐引用方式 GB/T 7714	Lu WS,Liu, Peiqing,Guo, Hao. Effect of the trailing-edge flap on tones due to self-excited oscillation within the leading-edge slat cove[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING,2023,237,4,:853-864.
APA	陆维爽,Liu, Peiqing,&Guo, Hao.(2023).Effect of the trailing-edge flap on tones due to self-excited oscillation within the leading-edge slat cove.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING,237(4),853-864.
MLA	陆维爽,et al."Effect of the trailing-edge flap on tones due to self-excited oscillation within the leading-edge slat cove".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING 237.4(2023):853-864.

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