小展弦比飞翼标模非定常流动及自由摇滚特性

doi:10.7527/S1000-6893.2021.26449

Abstract

Abstract:

The low aspect ratio flying-wing layout is one of the options of new fighter aircraft， and its dynamic characteristics are particularly important. Aiming at the unsteady flow and wing rock of the low aspect ratio flying-wing standard model at a large angle of attack， we employ the Delay Detached Eddy Simulation （DDES） method and the Dynamic Modal Decomposition （DMD） method to study the unsteady flow， fluctuating pressure and wing rock characteristics of flying-wings. The instability mechanism is analyzed and the method of instability motion control is explored. The results show that the unsteady flow characteristics （Ma=0.6）of the flying-wing model at a large angle of attack are mainly reflected in the concentrated vortex， vortex breakdown， and spiral wave. The vortex breakdown point oscillates along the vortex axis at the frequency of St=0.12-0.23， and the spiral wave frequency is within the range of St=1.16-2.33. The wing rock characteristics of the flying-wing model obtained through numerical simulation are in good agreement with those of the wind tunnel test. The wing rock phenomenon appears at the angle of attack of 24.5°-26°， and the roll angle balance position is 28°. It is found that the balance between concentrated vortex flow on the leeward side and separated flow on the windward side is the physical mechanism for the occurrence and maintenance of wing rock. When the upper spoiler is opened for 30°， the control effect of wing rock is not obvious. When the outer aileron is deflected for 30° downward， the wing rock phenomenon can be well restrained.

Key words: flying-wing, unsteady flow, wing rock, instability of control, subsonic, Delay Detached Eddy Simulation (DDES)

CLC Number:

V211.3

Fangjian WANG, Ke XIE, Jin LIU, Yuhui SONG, Han QIN, Lan CHEN. Unsteady flow and wing rock characteristics of low aspect ratio flying-wing[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(4): 126449.

Figures/Tables 36

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Table 1

Fig. 9

Fig. 10

Fig. 11

Fig. 12

Fig. 13

Fig. 14

Fig. 15

Table 2

Fig. 16

Fig. 17

Fig. 18

Fig. 19

Fig. 20

Fig. 21

Fig. 22

Fig. 23

Fig. 24

Fig. 25

Fig. 26

Fig. 27

Fig. 28

Fig. 29

Fig. 30

Fig. 31

Fig. 32

Fig. 33

Fig. 34

References 30

1	CHARLTON E F. Numerical stability and control analysis towards falling-leaf prediction capabilities of splitflow for two generic high-performance aircraft models： NASA/CR-1998-208730 ［R］. Washington， D.C.： NASA， 1998.
2	WONG M， MCKENZIE G， OL M， et al. Joint TTCP CFD studies into the 1303 UCAV performance： First year results［C］∥24th AIAA Applied Aerodynamics Conference. Reston： AIAA， 200.
3	CUMMINGS R， SCHUETTE A. An integrated computational/experimental approach to ucav stability & control estimation： Overview of nato rto avt-161［C］∥28th AIAA Applied Aerodynamics Conference. Reston： AIAA， 2010.
4	苏继川，黄勇，钟世东，等. 小展弦比飞翼跨声速典型流动特性研究［J］. 空气动力学学报， 2015， 33（3）： 307-312， 318.
	SU J C， HUANG Y， ZHONG S D， et al. Research on flow characteristics of low-aspect-ratio flying-wing at transonic speed［J］. Acta Aerodynamica Sinica， 2015， 33（3）： 307-312， 318 （in Chinese）.
5	TORMALM M， SCHMIDT S. Computational study of static and dynamic vortical flow over the delta wing SACCON configuration using the FOI flow solver edge［C］∥28th AIAA Applied Aerodynamics Conference. Reston： AIAA， 2010.
6	FRINK N. Strategy for dynamic CFD simulations on SACCON configuration［C］∥28th AIAA Applied Aerodynamics Conference. Reston： AIAA， 2010.
7	张耀冰，周乃春，陈江涛. 小展弦比飞翼标模雷诺数影响数值模拟研究［J］. 空气动力学学报， 2015， 33（3）： 279-288.
	ZHANG Y B， ZHOU N C， CHEN J T. Numerical investigation of Reynolds number effects on a low-aspect-ratio flying-wing model［J］. Acta Aerodynamica Sinica， 2015， 33（3）： 279-288 （in Chinese）.
8	GURSUL I. Review of unsteady vortex flows over delta wings［J］. Journal of Aircraft， 2005， 42（2）： 299-319.
9	MENKE M， YANG H， GURSUL I. Further experiments on fluctuations of vortex breakdown location［C］∥ 34th Aerospace Sciences Meeting and Exhibit. Reston： AIAA， 1996.
10	HWANG C， PI W. Investigation of steady and fluctuating pressures associated with the transonic buffeting and wing rock of a one-seventh scale model of the F-5A aircraft： NASA CR-3061 ［R］. Washington， D.C.： NASA， 1978.
11	祝立国，吕志咏. 绕三角翼流态中的某些定常与非定常特性研究［J］. 流体力学实验与测量， 2004， 18（1）： 43-47.
	ZHU L G， LU Z Y. Some steady and unsteady structures over delta wings［J］. Experiments and Measurements in Fluid Mechanics， 2004， 18（1）： 43-47 （in Chinese）.
12	ERICSSON L E. Analysis of the effect of sideslip on delta wing roll-trim characteristics［J］. Journal of Aircraft， 1997， 34（5）： 585-591.
13	张明禄，杨翊仁，吕志咏. 三角翼破裂涡流的非定常特性［J］. 西南交通大学学报， 2012， 47（5）： 832-835.
	ZHANG M L， YANG Y R， LV Z Y. Unsteady characteristics of vortex breakdown over delta wing［J］. Journal of Southwest Jiaotong University， 2012， 47（5）： 832-835 （in Chinese）.
14	LI Q， SUN D， ZHANG H X. Detached-eddy simulations and analyses on new vortical flows over a 76/40° double delta wing［J］. Science China Physics， Mechanics and Astronomy， 2013， 56（6）： 1062-1073.
15	LIU J， SUN H S， LIU Z T， et al. Numerical investigation of unsteady vortex breakdown past 80°/65° double-delta wing［J］. Chinese Journal of Aeronautics， 2014， 27（3）： 521-530.
16	ROSS A J， NGUYEN L T. Some observations regarding wing rock oscillations at high angles of attack： AIAA-1988-4371 ［R］. Reston： AIAA， 1988.
17	HWANG C， PI W. Some observations on the mechanism of aircraft wing rock［C］∥Aircraft Systems and Technology Conference. Reston： AIAA， 1978.
18	ERICSSON L. Wing rock of slender delta wings in light of recent investigations［C］∥36th AIAA Aerospace Sciences Meeting and Exhibit. Reston： AIAA， 1998.
19	ERICSSON L. Flow physics of slender wing rock-The complete story［C］∥37th Aerospace Sciences Meeting and Exhibit. Reston： AIAA， 1999.
20	ERICSSON L. Surprising developments in the search of analytic means for prediction of slender wing rock［C］∥40th AIAA Aerospace Sciences Meeting & Exhibit. Reston： AIAA， 2002.
21	ERICSSON L， BEYERS M. The challenge of determining combat aircraft wing rock through subscale testing［C］∥41st Aerospace Sciences Meeting and Exhibit. Reston： AIAA， 2003.
22	唐敏中，王铁，张伟，等. 低速三角翼滚摆试验研究［J］. 空气动力学学报， 1997， 15（4）： 436-443.
	TANG M Z， WANG T， ZHANG W， et al. Low speed experimental investigaton on wing rock［J］. Acta Aerodynamica Sinica， 1997， 15（4）： 436-443 （in Chinese）.
23	邓学蓥，石伟，王延奎，等. 两类非对称涡流动所诱导的摇滚运动［J］. 气体物理， 2016， 1（1）： 13-24.
	DENG X Y， SHI W， WANG Y K， et al. Wing rock motions induced by two kinds of asymmetric vortices flows［J］. Physics of Gases， 2016， 1（1）： 13-24 （in Chinese）.
24	王方剑，王宏伟，李晓峰，等. 细长旋成体亚声速超大攻角非定常流动特性研究［J］. 力学学报， 2022， 54（2）： 379-395.
	WANG F J， WANG H W， LI X H， et al. Subsonic unsteady aerodynamics characteristics on slender revolutionary body at extra-wide angle of attack ［J］. Chinese Journal of Theoretical and Applied Mechanics， 2022， 54（2）： 379-395 （in Chinese）.
25	杨晓锋，赵小虎，刘日之，等. 细长三角翼的摇滚特性［J］. 空气动力学学报， 2000， 18（1）： 111-114.
	YANG X F， ZHAO X H， LIU R Z， et al. Wing-rock behavior of a slender delta wing［J］. Acta Aerodynamica Sinica， 2000， 18（1）： 111-114 （in Chinese）.
26	刘伟，张涵信. 细长机翼摇滚的数值模拟及物理特性分析［J］. 力学学报， 2005， 37（4）： 385-392.
	LIU W， ZHANG H X. Numerical simulation and physical characteristics analysis for slender wing rock［J］. Acta Mechanica Sinica， 2005， 37（4）： 385-392 （in Chinese）.
27	张涵信，刘伟，谢昱飞，等. 后掠三角翼的摇滚及其动态演化问题［J］. 空气动力学学报， 2006， 24（1）： 5-9.
	ZHANG H X， LIU W， XIE Y F， et al. On the rocking motion and its dynamic evolution of a swept delta wing［J］. Acta Aerodynamica Sinica， 2006， 24（1）： 5-9 （in Chinese）.
28	杨云军，崔尔杰，周伟江. 细长三角翼摇滚运动数值研究［J］. 空气动力学学报， 2007， 25（1）： 34-44.
	YANG Y J， CUI E J， ZHOU W J. Numerical research on rock characteristic about a slender delta-wing［J］. Acta Aerodynamica Sinica， 2007， 25（1）： 34-44 （in Chinese）.
29	ZHOU L， GAO Z H， DU Y M. Flow-dependent DDES/γ-Reθt coupling model for the simulation of separated transitional flow［J］. Aerospace Science and Technology， 2019， 87： 389-403.
30	张来平，马戎，常兴华，等. 虚拟飞行中气动、运动和控制耦合的数值模拟技术［J］. 力学进展， 2014， 44： 201410.
	ZHANG L P， MA R， CHANG X H， et al. Review of aerodynamics/kinematics/flight-control coupling methods in virtual flight simulations［J］. Advances in Mechanics， 2014， 44： 201410 （in Chinese）.

网格量/10⁴	C_L	C_D	C_m
750	1.11	0.485	0.096
1 500	1.04	0.470	0.080
3 000	1.03	0.465	0.084

方法	阶数	a	b	c	d	e
FDF1	1	1	0	0	1	0
BDF1	1	1	0	1	0	0
FDF2	2	1	0	0	3/2	-1/2
BDF2	2	4/3	-1/3	2/3	0	0
C-N	2	1	0	1/2	1/2	0
A-M3	3	1	0	5/12	8/12	-1/12

[1]	Shaoqiang HAN, Wenping SONG, Zhonghua HAN, Jianhua XU. High-accuracy numerical-simulation of unsteady flow over high-speed coaxial rigid rotors [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(9): 529064-529064.
[2]	Songbai WANG, Yuyang HAO, Yadong WU, Yong CHEN, Huawei YU, Lin DU. Research progress on rotating instability of aeroengine compressor [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(16): 29851-029851.
[3]	Cheng ZHANG, Haoyuan REN, Tailong SHI, Wendi DAI. Multidisciplinary full-time coupling methods of folding fin containing non-linear connections and their applications [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(S2): 729461-729461.
[4]	Haoxiang WANG, Yao XIAO, Kaikai ZHANG, Guangli LI, Siyuan CHANG, Zhongwei TIAN, Kai CUI. Effect of body trailing edge shape on subsonic flow characteristics of high-pressure capturing wing configuration [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(6): 127215-127215.
[5]	Hongliang ZHAO, Wenqiang ZHANG, Jiahui QIU, Min ZHANG, Juan DU, Chaoqun NIE. Unsteady simulation of stall process in transonic compressor with total temperature distortion [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(14): 628319-628319.
[6]	Gaiqi LI, Dongyang MA, Du LI, Shaorong LIU, Yanmei YANG. Surge test on newly developing civil turboshaft engine under take⁃off condition [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(14): 628190-628190.
[7]	Xiaodong LIU, Pengxin LIU, Chen LI, Dong SUN, Xianxu YUAN. Direct numerical simulation of high enthalpy shock wave/turbulent boundary layer interaction [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(13): 127832-127832.
[8]	Yue WANG, Yunpeng WANG, Chun WANG, Zonglin JIANG. Numerical study of longitudinal stage separation for parallel-staged two-stage-to-orbit vehicle [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(11): 127634-127634.
[9]	Shuai SHAO, Zheng GUO, Gaowei JIA, Qingyang CHEN, Zhongxi HOU, Laiping ZHANG. Roll control of medium-aspect-ratio flying-wing UCAV based on trailing-edge jet [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(10): 127437-127437.
[10]	WU Qiang, XU Haojun, WEI Yang, PEI Binbin, XUE Yuan. Aerodynamics/flight dynamics coupling characteristics of aircraft under icing conditions [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(8): 125566-125566.
[11]	XU Xin, JIA He, CHEN Yaqian, RONG Wei, JIANG Wei, XUE Xiaopeng. Influence mechanism of fabric permeability of canopy on aerodynamic performance of Mars parachute [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(12): 126289-126289.
[12]	JIANG Youxu, LI Jie, YANG Zhao. Data correction method of wind tunnel test for verification aircraft with laminar wing section [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(11): 526814-526814.
[13]	ZHANG Jie, LI Wangbin, WANG Zhengqu, PAN Jinzhu, BU Chen. Transonic lateral departure motion characteristics of a low-aspect-ratio flying-wing model [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(11): 526340-526340.
[14]	LI Qian, WANG Yankui, JIA Yuhong. Roll oscillations over wing-body configuration with strake wings: Experiment [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(11): 526008-526008.
[15]	FENG Lihao, WEI Lingyun, DONG Lei, WANG Jinjun. Active flow control for coupled motion instability of flying-wing aircraft [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(10): 527353-527353.

Unsteady flow and wing rock characteristics of low aspect ratio flying-wing

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 36

References 30

Related Articles 15

Recommended Articles

Metrics

Comments