Skin friction measurement and drag reduction of porous media under cryogenic and high Reynolds number conditions

KONG Wenjie; DONG Hao; ZHAO Yidi; WU Jifei

doi:10.7638/kqdlxxb-2024.0027

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Skin friction measurement and drag reduction of porous media under cryogenic and high Reynolds number conditions

更新时间：2026-07-27

- Skin friction measurement and drag reduction of porous media under cryogenic and high Reynolds number conditions
- Vol. 42, Issue 8, Pages: 84-92(2024)
- 作者机构：
  
  1. 南京航空航天大学航空学院,南京,210016
  2. 南京航空航天大学航空航天结构力学及控制全国重点实验室,南京,210016
  3. 中国空气动力研究与发展中心高速空气动力研究所,绵阳,621000
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2024.0027
  CLC： V211.7
- Published：2024
- 稿件说明：
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孔文杰, 董昊, 赵一迪, 等. 低温高雷诺数下摩擦阻力测量及多孔介质减阻研究[J]. 空气动力学学报, 2024, 42(8): 84−92.

KONG Wenjie, DONG Hao, ZHAO Yidi, et al. Skin friction measurement and drag reduction of porous media under cryogenic and high Reynolds number conditions[J]. 2024, 42(8): 84-92.
孔文杰, 董昊, 赵一迪, 等. 低温高雷诺数下摩擦阻力测量及多孔介质减阻研究[J]. 空气动力学学报, 2024, 42(8): 84−92. DOI： 10.7638/kqdlxxb-2024.0027

KONG Wenjie, DONG Hao, ZHAO Yidi, et al. Skin friction measurement and drag reduction of porous media under cryogenic and high Reynolds number conditions[J]. 2024, 42(8): 84-92. DOI： 10.7638/kqdlxxb-2024.0027.

摘要

为研究低温高雷诺数条件下多孔介质湍流减阻规律及雷诺数效应，在0.3 m低温连续式风洞开展了壁面摩擦阻力测量及多孔介质减阻试验。分别在光滑平板和多孔介质区域下游布置低温脉动压力传感器和油流，对脉动压力功率谱及下游全局摩擦阻力进行测量。结果表明：摩擦阻力系数随雷诺数的增大而减小；多孔介质减阻率随雷诺数的增大（增大马赫数或降低来流总温），呈无固定规律下降趋势，且多孔介质的引入，使下游脉动压力的低频信号强度增加，高频信号强度减弱；在马赫数

= 0.300、雷诺数

= 7.51×10

、来流总温

= 140 K这一典型工况下，多孔介质仍具有11.4%的减阻率，初步验证了在低温高雷诺数条件下使用多孔介质减阻控制策略的可行性。

Abstract

To investigate the drag reduction laws and the Reynolds number effects of porous media under cryogenic and high Reynolds number conditions

this study conducted skin-friction measurements and drag reduction experiments in a 0.3 m transonic cryogenic wind tunnel. Pressure sensors and oil flow devices were installed downstream of the smooth plate and porous media region respectively

to measure the power spectra of fluctuating pressure and the global skin friction. It is shown that the skin friction coefficient decreases with the increase of Reynolds number. With the increase of Reynold

s number (increasing the Mach number or decreasing the total temperature of the incoming flow)

the porous media drag reduction ratio shows a non-uniform decreasing trend. Besides

the introduction of porous media

the low-frequency signal strength of the downstream pulsating pressure increases

and the intensity of the high-frequency signal is weakened. Under the typical condition that Mach number

= 0.300

Reynolds number

= 7.51×10

and the total temperature of the incoming flow

= 140 K

the drag reduction ratio of porous media is 11.4%

which initially verifies the feasibility of the drag reduction control strategy under low temperature and high Reynolds number conditions.

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Keywords

references

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