1.School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
2. PLA University of Science and technology, Nanjing, Jiangsu 210007, China
Abstract The frequency characteristic of electrostatic sensor array for measurement of gas-solid two-phase flow is investigated. Mathematical model of the electrostatic sensor array is established, the dynamic sensitivity is defined. The axial sensitive zone and frequency response on the electrostatic sensor array are acquired through simulation and tests. The results show that the axial sensing zone near the electrode is smaller than that in the central axis; The frequency bandwidth near the electrode is wider and the peak values is bigger; the faster the velocity is,the wider the bandwidth is, and the peak value is bigger; the longer the electrode length is, the narrower the frequency bandwidth is. And the relationship among particle velocity, length of sensitivity zone and frequency peak value is demonstrated.
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2011, Vol. 32 
