相关实验视频
Updated: Feb 15, 2026

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Cryogenic Liquid Jets for High Repetition Rate Discovery Science
Published on: May 9, 2020
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概括
这项研究引入了快速的,多参数光谱解析平面激光诱导光 (SR-PLIF) 用于在高速流中准确测量温度,压力和速度. 该技术提供无校准,空间分辨率的数据,对于验证复杂的模拟至关重要.
科学领域:
- 流体动力学 流体动力学
- 基于激光的诊断系统.
- 频谱学是一种光谱学.
背景情况:
- 描述高速流动需要对温度,压力和速度进行定量,高带宽的测量.
- 验证复杂的流体动力学数值模拟对于推进工程应用至关重要.
- 现有的诊断技术可能缺乏必要的空间分辨率或多参数能力,以进行全面的流量分析.
研究的目的:
- 为了展示一个快速的,多参数的光谱分辨率平面激光诱导光 (SR-PLIF) 技术.
- 为了实现空间分辨率,温度,压力和速度的无校准测量.
- 验证SR-PLIF技术用于描述高速流动和支持数值模拟.
主要方法:
- 使用氧化物马波段在225.33nm附近用于光谱分辨率平面激光诱导光 (SR-PLIF).
- 采用静态气体电池进行验证,其温度范围为295-420 K,压力范围为3.48-20.4 kPa.
- 应用了SR-PLIF诊断来研究低扩张的喷流,频率高达1kHz,空间分辨率为220μm.
主要成果:
- 在静态气体电池验证过程中实现了2%的平均温度误差和4%的压力误差.
- 证明了SR-PLIF在高收购率的低扩展喷气式飞机上的成功应用.
- 在SR-PLIF测量和未扩展喷气的数值模拟之间观察到有利的一致性.
结论:
- 开发的SR-PLIF技术为高速流量表征提供了准确的,无校准的多参数测量.
- SR-PLIF是验证数值模拟的宝贵工具,提高了计算流体动态的可靠性.
- 这种快速诊断能力为研究动态和复杂的流体现象开辟了新的途径.
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