Model experiment to study sonic boom propagation through turbulence. Part I: General results
Model experiment to study sonic boom propagation through turbulence. Part I: General results
复制标题
研究音爆通过湍流传播的模型实验。
DOI：
10.1121/1.421114
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发表时间：
1998
影响因子：
2.4
通讯作者：
D. Blackstock
中科院分区：
文献类型：
--
作者：
B. Lipkens;D. Blackstock
本文报道了一个研究大气湍流对音爆影响的模型实验。音爆模型是由电火花产生的N波，湍流模型是由飞机喷射产生的。特别令人感兴趣的是模型N波通过模型湍流后波形、峰值压力和上升时间的变化。本文首先对紊流对音爆和模型N波影响的实验进行了评述。该实验的设计使模型湍流特征长度尺度与大气湍流特征长度尺度之间的比例因子（约为10−4）与模型N波与音爆之间的比例因子相同。大多数报道的结果都是针对平面波的。在安静空气和湍流空气中记录了100或200组压力波形，并进行了分析。给出了样本波形、峰值压力和上升时间的散点图、直方图和累积概率分布。结果如下：…
A model experiment to study the effect of atmospheric turbulence on sonic booms is reported. The model sonic booms are N waves produced by electric sparks, and the model turbulence is created by a plane jet. Of particular interest are the changes in waveform, peak pressure, and rise time of the model N waves after they have passed through the model turbulence. A review is first given of previous experiments on the effect of turbulence on both sonic booms and model N waves. This experiment was designed so that the scale factor (approximately 10−4) relating the characteristic length scales of the model turbulence to those of atmospheric turbulence is the same as that relating the model N waves to sonic booms. Most of the results reported are for plane waves. Sets of 100 or 200 pressure waveforms were recorded, for both quiet and turbulent air, and analyzed. Sample waveforms, scatter plots of peak pressure and rise time, histograms, and cumulative probability distributions are given. Results are as follows: ...