| 汽液两相流动不稳定性的小波包研究法 |
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| 引用本文： | 尚智. 汽液两相流动不稳定性的小波包研究法[J]. 原子能科学技术, 2005, 39(3): 232-235 |
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| 作者姓名： | 尚智 |
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| 作者单位： | 上海交通大学,机械与动力工程学院,上海,200030;清华大学,热能工程系,北京,100084 |
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| 摘 要： | 利用小波包对信号的精确细分特性,对汽液两相流动密度波不稳定性的脉动信号进行分析,并由此得到两相密度波不稳定性脉动的特征向量。由这些特征向量可得到汽液两相流动脉动能量随脉动频率的分布状况,开创了对汽液两相流动密度波不稳定性研究的新视角。
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| 关 键 词： | 小波包 汽液两相流动 密度波不稳定性 特征向量 |
| 文章编号： | 1000-6931(2005)03-0232-04 |
Research on Oscillation of Two-phase Flow Using Wavelet Packets |
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| SHANG Zhi. Research on Oscillation of Two-phase Flow Using Wavelet Packets[J]. Atomic Energy Science and Technology, 2005, 39(3): 232-235 |
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| Authors: | SHANG Zhi |
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| Abstract: | A novel research method to study density wave oscillation of vapor-water two-phase flow using wavelet packets was applied. The eigenvalues of the density wave oscillation of vapor-water two-phase flow were picked-up by wavelet packets employing the (cha)racters of signal precision decomposition. The distribution and variation of the energy of the oscillation were observed inside the different fields of the oscillation frequency. This method will open a new angle for studying the density wave type oscillation of (vapor)-water two-phase flow. |
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| Keywords: | wavelet packets analysis vapor-water two-phase flow density wave type oscillation eigenvalues |
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