• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Spacecraft and Rockets >Performance Enhancement of a Ramjet Air Intake by Passive Bleed of Boundary Layer
【24h】

Performance Enhancement of a Ramjet Air Intake by Passive Bleed of Boundary Layer

机译：边界层的被动排气可增强Ramjet进气的性能

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

Wind-tunnel tests were carried out to study the effect of passive boundary-layer bleed on the aerodynamic performance of an isolated two-dimensional ramjet air-intake model in the Mach number range 1.8 to 3.0. Backpressure at the exit of the model was controlled by varying the exit area of the intake. Passive bleed of the internal boundary layer was created by displacing the side walls between the ramp and cowl, to bypass viscous flow into ambient condition. Measurements included steady static pressure distributions on the intake ramp, cowl, side plate, total pressure recovery, and mass flow rate. Results indicate that, although any gap improves the total pressure recovery and the mass flow rate, a gap of 1.6mm (corresponding to increase in the local width of intake) or capture area up to bleed plane by 8.5% provides the best overall efficiency, considering these parameters, and postpones the supercritical range of the intake. The overall performance of the intake significantly improved due to alleviation of shock-wave and boundary-layer interactions in the intake.
机译：进行风洞测试以研究被动边界层排气对马赫数范围为1.8至3.0的孤立二维冲压喷气机进气模型的空气动力学性能的影响。通过改变进气口的出口面积来控制模型出口处的背压。通过移动坡道和前围板之间的侧壁，绕开粘性流进入环境条件，可以产生内部边界层的被动渗漏。测量包括进气坡道，前围板，侧板，总压力恢复率和质量流率的稳定静压分布。结果表明，尽管任何间隙都可以改善总压力恢复和质量流量，但1.6mm的间隙（对应于进气口局部宽度的增加）或直到泄气平面的捕获区域的间隙可以达到8.5％，这是最佳的总体效率，考虑这些参数，并推迟进气的超临界范围。由于减轻了进气中的冲击波和边界层相互作用，进气的整体性能得到了显着改善。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2019年第3期|875-886|共12页
  • 作者

    Suryanarayana G. K.; Dubey Ritukanchan;

  • 作者单位

    Dayananda Sagar Univ, Aerosp Engn, Bangalore 560068, Karnataka, India;

    Dayananda Sagar Univ, Natl Trison Aerodynam Test Facil, Bangalore 560068, Karnataka, India;

  • 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