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Updated: May 12, 2026
11:28
Analytical Techniques for Assaying Nitric Oxide Bioactivity
Published on: June 18, 2012
17.9K
概括
氧化分子标记速度计 (NO MTV) 在冲击道中测量了球形模型背后的唤醒速度. 结果与计算流体动力学 (CFD) 预测非常一致.
科学领域:
- 航空航天工程 航空航天工程
- 流体动力学 流体动力学
- 物理化学 物理化学
背景情况:
- 对于超音速和超音速车辆设计来说,高热流中的空气动力学现象的表征至关重要.
- 在冲击道中的自由飞行测试提供了现实的高速流动条件.
- 精确的速度测量在复杂的流场,如流醒,是具有挑战性的.
研究的目的:
- 应用氧化物分子标记速度测量 (NO MTV) 用于在自由飞行球形模型后面的形特征.
- 开发和实施一种新的多延迟计时方案,用于在不同的碰撞环境下测量速度.
- 通过计算流体动力学 (CFD) 模拟来验证实验发现.
主要方法:
- 使用了在100kHz运行的爆发模式激光,用于NO MTV.
- 实施了一种新的多延时计时方案,以在动态流量条件下捕获速度配置文件.
- 在自由活塞反射冲击道中进行了实验,采用球形模型,在10.3和12.0MJ/kg的流量度下进行实验.
主要成果:
- 在模型之后,成功测量了四个同时的速度配置文件.
- 获得的速度测量范围从-600到3600m/s.
- 在NO MTV实验数据和CFD建模结果之间显示出良好的一致性.
结论:
- 没有MTV是一种可行的技术,用于测量冲击道中复杂的自由飞行模型的速度.
- 新的多延时计时方案提高了NO MTV在不同碰撞环境中的适用性.
- 在高流研究中,CFD建模是验证实验数据的可靠工具.
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