...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AIAA Journal >Polymer/Ceramic Pressure-Sensitive Paint with Reduced Roughness for Unsteady Measurement in Transonic Flow
【24h】

Polymer/Ceramic Pressure-Sensitive Paint with Reduced Roughness for Unsteady Measurement in Transonic Flow

机译：降低粗糙度的聚合物/陶瓷压敏涂料，用于跨音速流中的不稳定测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Polymer/ceramic pressure-sensitive paints with reduced surface roughness were developed for measuring unsteady pressure fields in transonic flow. Four types of polymer/ceramic pressure-sensitive paints, each having different properties (such as particle size, mass content, and solvent), were formulated and applied to transonic wind-tunnel tests of a supercritical airfoil. The effects of surface roughness on the unsteady transonic flow on the airfoil were evaluated at Mach 0.74 at a Reynolds number of 5.0x10(6). It was found that all four polymer/ceramic pressure-sensitive paints could be used to measure time-series pressure distributions, but the location of the shock wave and the root-mean-square pressure fluctuations differed, depending on the type of polymer/ceramic pressure-sensitive paint. Among the tested polymer/ceramic pressure-sensitive paints, having an arithmetic surface roughness of 0.5 mu m and a cutoff frequency of 3kHz yielded practically the same data as a clean airfoil. Using this polymer/ceramic pressure-sensitive paint, propagation of pressure waves and oscillation of shock waves on the airfoil were clearly captured. A spectral analysis revealed that the fundamental frequency of shock-wave oscillation agreed very well with that calculated based on the mechanism proposed in previous studies. These results showed that the selected polymer/ceramic pressure-sensitive paint is an effective means by which to study transonic buffeting on airfoils and three-dimensional wings.
机译：已开发出具有降低的表面粗糙度的聚合物/陶瓷压敏涂料，用于测量跨音速流中的不稳定压力场。配制了四种类型的聚合物/陶瓷压敏涂料，每种涂料具有不同的属性（例如粒度，质量含量和溶剂），并将其应用于超临界翼型的跨音速风洞测试。在马赫数为0.74时，雷诺数为5.0x10（6）的情况下，评估了表面粗糙度对机翼上非稳态跨音速流动的影响。发现所有四种聚合物/陶瓷压敏涂料都可用于测量时间序列的压力分布，但冲击波的位置和均方根压力波动不同，这取决于聚合物/陶瓷的类型压敏涂料。在测试的聚合物/陶瓷压敏涂料中，具有0.5微米的算术表面粗糙度和3kHz的截止频率实际上产生了与清洁机翼相同的数据。使用这种聚合物/陶瓷压敏涂料，可以清楚地捕获机翼上压力波的传播和冲击波的振荡。频谱分析表明，冲击波振荡的基本频率与根据先前研究提出的机理计算出的基本频率非常吻合。这些结果表明，选择的聚合物/陶瓷压敏涂料是研究翼型和三维机翼上跨音速抖振的有效手段。

著录项

  • 来源
    《AIAA Journal》 |2018年第6期|2145-2156|共12页
  • 作者

    Sugioka Yosuke; Numata Daiju; Asai Keisuke; Koike Shunsuke; Nakakita Kazuyuki; Nakajima Tsutomu;

  • 作者单位

    Tohoku Univ, Grad Sch Engn, Dept Aerosp Engn, Aoba Ku, 6-6-01 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Tohoku Univ, Grad Sch Engn, Dept Aerosp Engn, Aoba Ku, 6-6-01 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Tohoku Univ, Grad Sch Engn, Dept Aerosp Engn, Aoba Ku, 6-6-01 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Japan Aerosp Explorat Agcy, Aeronaut Technol Directorate, 7-44-1 Jindaiji Higashi, Chofu, Tokyo 1828522, Japan;

    Japan Aerosp Explorat Agcy, Aeronaut Technol Directorate, 7-44-1 Jindaiji Higashi, Chofu, Tokyo 1828522, Japan;

    Japan Aerosp Explorat Agcy, Aeronaut Technol Directorate, 7-44-1 Jindaiji Higashi, Chofu, Tokyo 1828522, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号