| 密相气力输送颗粒静电波动信号多尺度分析 |
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| 引用本文： | 许传龙,王式民.密相气力输送颗粒静电波动信号多尺度分析[J].工程热物理学报,2011(2):239-242. |
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| 作者姓名： | 许传龙 王式民 |
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| 作者单位： | 东南大学热能工程研究所; |
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| 基金项目： | 国家自然科学基金资助项目(No.50836003;No.50906012); 国家重点基础研究专项经费(No.2010CB227002) |
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| 摘 要： | 在加压密相气力输送实验装置上获得了不同操作条件下煤粉颗粒静电波动信号,并用Hilbert-Huang变换、功率谱进行分析.结果表明:随着表观速度的增加,静电波动信号主峰值的频率增大;静电波动信号希尔伯特-黄变换(Hilbert-Huang)揭示了气固两相流静电信号的非线性和非平稳特征,随气固两相流颗粒相浓度降低和颗粒及...
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| 关 键 词： | 颗粒静电 静电传感器 气-固两相流 Hilbert-Huang变换 |
MULTI-SCALE ANALYSIS OF ELECTROSTATIC FLUCTUATION SIGNALS IN DENSE-PHASE PNEUMATIC CONVEYING OF PULVERIZED COAL |
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| XU CHUAN-LONG WANG SHI-MIN {Thermal Energy Engineering Research Institute,Southeast University,Nanjing ,China.MULTI-SCALE ANALYSIS OF ELECTROSTATIC FLUCTUATION SIGNALS IN DENSE-PHASE PNEUMATIC CONVEYING OF PULVERIZED COAL[J].Journal of Engineering Thermophysics,2011(2):239-242. |
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| Authors: | XU CHUAN-LONG WANG SHI-MIN {Thermal Energy Engineering Research Institute Southeast University Nanjing China |
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| Institution: | XU CHUAN-LONG WANG SHI-MIN {Thermal Energy Engineering Research Institute,Southeast University,Nanjing 210096,China) |
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| Abstract: | Particle charging generated by particle-wall,particle-particle and particle-gas contacts in pneumatic transport pipelines contains rich information on gas-solid flow hydrodynamics.Electrostatic fluctuation signals were detected by a ring-shape electrostatic sensor in a dense phase pneumatic conveying system.Power spectrum analysis and Hilbert-Huang Transform(HHT) were applied to the electrostatic fluctuations to extract and characterize the intrinsic features of dense-phase gas-solid flow.Results show that ... |
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| Keywords: | particle charging electrostatic sensor gas-solid two-phase flows hilbert-huang transform |
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