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7°尖锥高超声速边界层脉动压力实验研究

陈久芬 徐洋 许晓斌 邹琼芬 凌岗 张毅锋

陈久芬,徐洋,许晓斌,等. 7°尖锥高超声速边界层脉动压力实验研究[J]. 实验流体力学,2022,36(X):1-10 doi: 10.11729/syltlx20210054
引用本文: 陈久芬,徐洋,许晓斌,等. 7°尖锥高超声速边界层脉动压力实验研究[J]. 实验流体力学,2022,36(X):1-10 doi: 10.11729/syltlx20210054
CHEN J F,XU Y,XU X B,et al. Pressure fluctuation experiments of hypersonic boundary-layer on a 7-degree half-angle sharp cone[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-10. doi: 10.11729/syltlx20210054
Citation: CHEN J F,XU Y,XU X B,et al. Pressure fluctuation experiments of hypersonic boundary-layer on a 7-degree half-angle sharp cone[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-10. doi: 10.11729/syltlx20210054

7°尖锥高超声速边界层脉动压力实验研究

doi: 10.11729/syltlx20210054
基金项目: 国家自然科学基金(11872370);国家重点研发计划(2016YFA0401200)
详细信息
    作者简介:

    陈久芬:(1979—),女,四川宜宾人,硕士研究生,高级工程师。研究方向:高超声速风洞设备研制及气动热实验研究。通信地址:四川省绵阳市涪城区二环路南段6号。E-mail:1013233946@qq.com

    通讯作者:

    E-mail:zyf63867@163.com

  • 中图分类号: V211.7

Pressure fluctuation experiments of hypersonic boundary-layer on a 7-degree half-angle sharp cone

  • 摘要: 针对半锥角7°尖锥模型,在常规高超声速风洞中开展了边界层脉动压力测量实验,进行了线性稳定性分析,研究了不同单位雷诺数和马赫数对尖锥边界层转捩位置和边界层稳定性的影响规律。模型长度800 mm,头部半径0.05 mm,实验单位雷诺数0.49×107 m–1~2.45×107 m–1,马赫数5~8,迎角0°。通过红外热图技术和高频脉动压力测量技术获得了模型表面边界层转捩位置和边界层内扰动波能谱分布,利用线性稳定性理论分析了最不稳定波频率和增长率。实验结果表明:在转捩区间可以测量到明显具有不稳定波频谱特征的脉动压力信号,其频率与稳定性理论分析的二模态不稳定波接近,幅值变化趋势也与之类似;随着雷诺数增大,不稳定波出现位置提前,频率增大,转捩位置提前;边界层中不稳定波包含第一和第二模态,马赫数5时转捩由第一模态主导,马赫数高于6时由第二模态主导。
  • 图  1  Φ1米高超声速风洞

    Figure  1.  Φ1 m Hypersonic wind tunnel

    图  2  实验模型

    Figure  2.  Test model

    图  3  模型表面温升分布和脉动压力功率谱 (Re=1.00×107 m–1

    Figure  3.  Surface temperature rise and surface pressure power spectra (Re=1.00×107 m–1

    图  4  模型表面温升变化曲线(子午线)

    Figure  4.  Surface temperature rise of centre lines

    图  5  模型表面温升分布

    Figure  5.  Surface temperature rise

    图  6  壁面压力功率谱和线性稳定性分析 (Re=0.49×107 m–1

    Figure  6.  Surface pressure power spectra and linear stability analysis (Re=0.49×107 m–1

    图  7  壁面压力功率谱和线性稳定性分析 (Re=0.72×107 m–1

    Figure  7.  Surface pressure power spectra and linear stability analysis (Re=0.72×107 m–1

    图  8  壁面压力功率谱和线性稳定性分析(Re=2.45×107 m–1

    Figure  8.  Surface pressure power spectra and linear stability analysis (Re=2.45×107 m–1

    图  9  模型表面温升变化曲线(子午线)

    Figure  9.  Surface temperature rise of centre lines

    图  10  模型表面温升分布

    Figure  10.  Surface temperature rise

    图  11  模型表面脉动压力功率谱

    Figure  11.  Surface temperature rise and surface pressure power spectra

    图  12  第一模态(实线)、第二模态(虚线)的N值分布

    Figure  12.  N-factors of first-mode and second-mode disturbance

    表  1  PCB传感器安装位置

    Table  1.   PCB installation locations

    PCB
    编号
    12345678
    x/mm125205285365445525605685
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-03
  • 录用日期:  2021-10-21
  • 修回日期:  2021-10-21
  • 网络出版日期:  2022-11-15

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