• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>AIAA Aerospace Sciences Meeting >Retroreffective Background Oriented Schlieren Imaging Results from the NASA Plume/Shock Interaction Test
【24h】

Retroreffective Background Oriented Schlieren Imaging Results from the NASA Plume/Shock Interaction Test

机译：Ordorefective背景面向的Schlieren成像来自NASA羽流/震动相互作用测试

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In support of NASA's Commercial Supersonics Technology (CST) project, a test was conducted in the 9-by-7 ft. supersonic section of the NASA Ames Unitary Plan Wind Tunnel (UPWT). The tests were designed to study the interaction of shocks with a supersonic jet characteristic of those that may occur on a commercial supersonic aircraft. Multiple shock generating geometries were tested to examine the interaction dynamics as they pertain to sonic boom mitigation. An integral part of the analyses of these interactions are the interpretation of the data generated from the retroreflective Background Oriented Schlieren (RBOS) imaging technique employed for this test. The regularization-based optical flow methodology used to generate these data is described. Sample esults are compared to those using normalized cross-correlation. The reduced noise, additional feature detail, and fewer false artifacts provided by the optical flow technique produced clearer time-averaged images, allowing for better interpretation of the underlying flow phenomena. These images, coupled with pressure signatures in the near field, are used to provide an overview of the detailed interaction flowflelds.
机译：在支持NASA的商业超声物技术（CST）项目中，在9×7英尺处进行了测试。美国宇航局的超音速部分酉计划风隧道（UPWT）。设计用于研究冲击的相互作用与在商业超声波飞机上可能发生的超音速喷射特性。测试多次冲击生成几何形状以检查相互作用动态，因为它们有关Sonic Boom缓解。这些相互作用分析的组成部分是从用于该测试所采用的逆向反射背景导向的Schlieren（RBOS）成像技术产生的数据的解释。描述了用于生成这些数据的基于正则化的光学流法。将样本测试与使用归一化交叉相关的结果进行比较。通过降低的噪声，附加特征详细信息和由光学流技术提供的较少的假伪像产生更清晰的时间平均图像，允许更好地解释底层流动现象。这些图像与近场中的压力符号耦合，用于提供详细的交互流量概述。

著录项

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