• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Film-cooling of cylindrical hole with downstream surface dielectric barrier discharge actuators
【24h】

Film-cooling of cylindrical hole with downstream surface dielectric barrier discharge actuators

机译：使用下游表面介质阻挡放电执行器对圆柱孔进行薄膜冷却

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

This paper presents a new way to improve film-cooling performance by using surface dielectric barrier discharge actuators installed downstream from film-cooling hole. Results provide insight into the flow field characteristic and film-cooing effectiveness of both primary cylindrical hole with and without actuator, and a comparison is made. The velocity field near the test surface is found to be significantly changed under the effect of actuator, resulting in a new pair of vortexes of which the rotating direction is opposite to that of counter rotating vortex pair. Under the effect of new vortex pair, the trend of hot main flow pushing jet flow up is impeded and the jet flow is induced to flow along spanwise direction. A better jet flow adherent performance and greater jet flow coverage are achieved by installing actuator downstream from cylindrical hole than from primary hole, providing an increment in the film-cooing effectiveness. The effects of each location parameter of the actuator on the film-cooling effectiveness are studied in detail. The results indicate that under different blow ratio, the actuator location parameter has various levels of influence on film-cooing effectiveness. This is mainly due to the strength of counter rotating vortex pair in the primary cylindrical hole and the induced ability of surface dielectric barrier discharge actuators.
机译：本文提出了一种通过使用安装在薄膜冷却孔下游的表面介质阻挡放电致动器来提高薄膜冷却性能的新方法。结果提供了对带有和不带有致动器的主圆柱孔的流场特性和薄膜冷却效果的了解，并进行了比较。发现在致动器的作用下，测试表面附近的速度场发生了显着变化，从而产生了一对新的涡流，其旋转方向与反向旋转的涡流对相反。在新的涡流对的作用下，阻止了热主流推动射流上升的趋势，并促使射流沿翼展方向流动。通过将执行器安装在圆柱孔的下游而不是初级孔的下游，可以获得更好的喷射流附着性能和更大的喷射流覆盖范围，从而提高了覆膜效果。详细研究了执行器各位置参数对薄膜冷却效果的影响。结果表明，在不同的吹塑比下，执行机构的位置参数对薄膜冷却效果有不同程度的影响。这主要归因于主圆柱孔中反向旋转涡流对的强度以及表面介电势垒放电执行器的感应能力。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2015年第11期|825-837|共13页
  • 作者

    Sheng-ji Dai; Yang Xiao; Li-ming He; Tao Jin; Qian Zhang; Peng-hui Hou; Zi-chen Zhao;

  • 作者单位

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China,Research Institute of Army Aviation, Beijing 101121, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

    Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

  • 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

    Film-cooing; Vortex; Dielectric barrier discharge; Effectiveness;

    机译：薄膜冷却涡流;介质阻挡放电;实效;

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