S1223翼型低雷诺数下分离泡及气动特性

王皓田; 朱杨柱; 车学科; 李修乾

doi:10.7638/kqdlxxb-2020.0075

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S1223翼型低雷诺数下分离泡及气动特性

研究论文 | 更新时间：2026-05-28

- S1223翼型低雷诺数下分离泡及气动特性
- Separation bubble and aerodynamic characteristics of S1223 airfoil at low Reynolds numbers
- 空气动力学学报 2021年39卷第3期页码：90-98
- 作者机构：
  
  1. 航天工程大学宇航科学与技术系,北京,101416
  2. 空气动力学国家重点实验室,绵阳,621000
  3. 陆军工程大学爆炸冲击防灾减灾国家重点实验室,南京,210007
- 作者简介：
  
  王皓田（1996-），男，吉林通化人，硕士研究生，研究方向：等离子体流动控制与辅助燃烧. E-mail：wht_maple@163.com
  车学科*（1980-），山西平陆人，博士，副教授，研究方向：等离子体流动控制与辅助燃烧. E-mail：chedk@163.com
- 基金信息：
  
  空气动力学国家重点实验室开放基金（SKLA20180103）
- DOI：10.7638/kqdlxxb-2020.0075
  中图分类号： V211.41;V211.7
- 纸质出版：2021
- 稿件说明：
移动端阅览
王皓田, 朱杨柱, 车学科, 等. S1223翼型低雷诺数下分离泡及气动特性[J]. 空气动力学学报, 2021, 39(3): 90−98.

WANG Haotian, ZHU Yangzhu, CHE Xueke, et al. Separation bubble and aerodynamic characteristics of S1223 airfoil at low Reynolds numbers[J]. 2021, 39(3): 90-98.
王皓田, 朱杨柱, 车学科, 等. S1223翼型低雷诺数下分离泡及气动特性[J]. 空气动力学学报, 2021, 39(3): 90−98. DOI： 10.7638/kqdlxxb-2020.0075

WANG Haotian, ZHU Yangzhu, CHE Xueke, et al. Separation bubble and aerodynamic characteristics of S1223 airfoil at low Reynolds numbers[J]. 2021, 39(3): 90-98. DOI： 10.7638/kqdlxxb-2020.0075.

摘要

采用表面测压技术，测量了低雷诺数下(

= 6.0×10

、1.0×10

、2.0×10

) S1223翼型的表面压力分布，通过时均化处理及瞬态处理方法，分别获得了翼型稳态和瞬态压力系数、升力系数，分析了流场结构随雷诺数及攻角的变化规律，研究了雷诺数及攻角对翼型升力的影响机理。结果表明，从时均升力系数随攻角的变化规律来看，S1223翼型在低雷诺数下存在“静态滞回”效应。攻角由负逐渐增大至0°时，下翼面由完全分离转变为出现层流分离泡，随后分离泡逐渐减小直至消失，导致升力系数斜率呈现随攻角逐渐增大的非线性现象。当攻角超过临界攻角后，不同雷诺数下翼型流场结构随攻角的变化规律存在本质不同，

= 6.0×10

和1.0×10

时，翼型周围流场迅速发生大范围流动分离，升力系数迅速减小；而

= 2.0×10

时，上翼面周期性生成短泡，引发低频振荡现象，升力系数呈现准周期性变化，

= 16°时上翼面时均流场呈现40%弦长的长泡结构。

Abstract

The surface pressure distribution of the S1223 airfoil at low Reynolds numbers (

= 6.0×10

1.0×10

and 2.0×10

) was measured using the surface pressure measurement technique. Both time-averaging and transient processing methods were used to obtain the steady and transient pressure/lift coefficients on the airfoil. Combined with the flow structure analysis

the influence mechanism of the Reynolds number and the angle of attack on the lift of th

e airfoil was studied. According to the variation of time averaged lift coefficient with the angle of attack

S1223 airfoil exibits a "static hysteresis" effect at low Reynolds numbers. The results show that under negative angles of attack

the lift coefficient curve shows a nonlinear phenomenon where its slope gradually increases. When the angle of attack is increased from a negative value

the lower wing surface changes from the state of complete separation to that of laminar separation bubbles

then the separation bubbles gradually shrink until disappeared

resulting in the slope of the lift coefficient curve gradually increasing with the angle of attack. When the angle of attack exceeds the stall value

the flow structures on the S1223 airfoil under different Reynolds numbers are essentially different. At

= 6.0×10

and 1.0×10

the flow field around the airfoil rapidly undergoes large-scale flow separation

and the lift coefficient decreases sharply; at

= 2.0×10

short bubbles on the upper wing surface are generated periodically

causing low-frequency oscillations

and the lift coefficient exhibits a quasi-periodic variation. In the meantime

the averaged flow field on the upper wing surface exhibits a long bubble structure with a chord length of 40%.

关键词

Keywords

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