Experimental study on support interference of single support rod via force measurement and PIV

REN Fanfan; WEI Lihui; TAO Aihua; LI Yanpeng; YANG Lei; GAO Na; ZHANG Caicheng; JIANG Jiali; XU Xianghui; WANG Wenda

doi:10.11729/syltlx20210037

Volume 36 Issue 6

Dec. 2022

Turn off MathJax

Article Contents

Article Navigation > Journal of Experiments in Fluid Mechanics > 2022 > 36(6): 36-46

REN F F，WEI L H，TAO A H，et al. Experimental study on support interference of single support rod via force measurement and PIV[J]. Journal of Experiments in Fluid Mechanics，2022，36（6）：36-46. doi: 10.11729/syltlx20210037

Citation:

PDF( 0 KB)

Experimental study on support interference of single support rod via force measurement and PIV

doi: 10.11729/syltlx20210037

1.
AVIC Aerodynamics Research Institute, Harbin　150000, China

Received Date: 2021-04-20
Accepted Date: 2021-11-22
Rev Recd Date: 2021-06-16
Publish Date: 2022-12-25

Abstract

Abstract

In order to study and optimize the support interference characteristics for the single support rod in the FL–51 low-speed wind tunnel, the longitudinal and transverse two-step support interference test of the aircraft in cruise and uplift configuration is carried out for the three-dimensional support rods with the cross section of 24 ribbed, round and truncated airfoil at the wind speed of 70, 50 m/s and the support rod pre-deflection angle of 11° （the angle between the support rod and the axis of the model fuselage is 79°）. Based on the study of the support interference characteristics of the single support rod at the pre-deflection angle of 11°, the support interference characteristics wind tunnel test of 24 ribbed, round and truncated airfoil support rods was carried out at the pre-deflection angle of 30° and 60° （the angle between the support rod and the axis of the model fuselage is 60° and 30° respectively）. For further analyzing the characteristics of two-dimensional support rod flow around and wake characteristics with different sizes and cross section shapes, the wind tunnel PIV test is carried out. The results show that the longitudinal support interference of the airfoil support rod is the best, but it deteriorates in the transverse direction.With the increase of the maximum thickness, the wake vortex of the airfoil support rod has good consistency, and the wake vortex of the 24 ribbed and round cross section support rod varies with diameter. For wind tunnel tests that only conduct longitudinal tests or focus on longitudinal tests, airfoil cross section or truncated airfoil should be selected.
- single support rod,
- support interference,
- cross section shape,
- two-dimensional support rod,
- PIV

FullText(HTML)

References(11)

References

[1]	郑新军,焦仁山,苏文华,等. 低速高雷诺数风洞腹撑支架干扰研究[J]. 空气动力学学报,2017,35(6):870-874. doi: 10.7638/kqdlxxb-2015.0114 ZHENG X J,JIAO R S,SU W H,et al. Ventral support interference in low-speed and high Reynolds number wind tunnel[J]. Acta Aerodynamica Sinica,2017,35(6):870-874. doi: 10.7638/kqdlxxb-2015.0114
[2]	WILLAUME R A. High Reynolds number subsonic aerodynamics[R]. AGARDLS-37-70, 1970.
[3]	MARK M D, MCMASTERS J H. High Reynolds number testing in support of transport air plane development[R]. AIAA 92-3982, 1992. doi: 10.2514/6.1992-3982
[4]	HANG B. A new method ofblockage correction for a large blockage model in wind tunnel test[R]. AIAA 2002-0881, 2002. doi: 10.2514/6.2002-881
[5]	王勋年,祝明红,孙传宝. 低速大迎角尾撑支架干扰试验研究[J]. 实验流体力学,2007,21(2):8-12. doi: 10.3969/j.issn.1672-9897.2007.02.002 WANG X N,ZHU M H,SUN C B. Investigation on the interference of rear sting supports at high angle of attack in low speed wind-tunnel[J]. Journal of Experiments in Fluid Mechanics,2007,21(2):8-12. doi: 10.3969/j.issn.1672-9897.2007.02.002
[6]	沈彦杰,卜忱,刘春明,等. 大幅振荡试验支架干扰研究[J]. 空气动力学学报,2016,34(6):762-769. doi: 10.7638/kqdlxxb-2015.0109 SHEN Y J,BU C,LIU C M,et al. Investigation of support interference of large amplitude oscillation test[J]. Acta Aerodynamica Sinica,2016,34(6):762-769. doi: 10.7638/kqdlxxb-2015.0109
[7]	祝明红,孙海生,金玲,等. 低速大迎角张线尾撑系统支架干扰影响研究[J]. 实验流体力学,2011,25(3):1-5. doi: 10.3969/j.issn.1672-9897.2011.03.001 ZHU M H,SUN H S,JIN L,et al. Study on the support interference of wire-assistant sting support at high angle of attack in low speed wind tunnel[J]. Journal of Experiments in Fluid Mechanics,2011,25(3):1-5. doi: 10.3969/j.issn.1672-9897.2011.03.001
[8]	高静,李聪,杨勇,等. 低速风洞推力矢量试验背撑干扰特性试验研究[J]. 实验流体力学,2005,19(3):10-13,20. doi: 10.3969/j.issn.1672-9897.2005.03.003 GAO J,LI C,YANG Y,et al. Researches of dorsal support interference in low speed wind tunnel thrust vector test[J]. Journal of Experiments in Fluid Mechanics,2005,19(3):10-13,20. doi: 10.3969/j.issn.1672-9897.2005.03.003
[9]	田学诗. 24角形剖面的风洞试验研究及工程应用[J]. 空气动力学学报,1996(4):379-386. TIAN X S. Wind tunnel test investigation and engineering application of 24 angular polygon section[J]. Acta Aerodynamica Sinica,1996(4):379-386.
[10]	程厚梅. 风洞实验干扰与修正[M]. 北京: 国防工业出版社, 2003. CHENG H M. Interference and Correction on Wind Tunnel Testing[M]. Beijing: National Defense Industry Press, 2003.
[11]	范洁川. 风洞试验手册[M]. 北京: 航空工业出版社, 2002.