Corona based air-flow using parallel discharge electrodes
Corona based air-flow using parallel discharge electrodes
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DOI：
10.1016/j.expthermflusci.2016.06.023
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发表时间：
2016-12
影响因子：
3.2
通讯作者：
V. Dau;T. X. Dinh;T. Bui;C. Tran;H. Phan;T. Terebessy
中科院分区：
文献类型：
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作者：
V. Dau;T. X. Dinh;T. Bui;C. Tran;H. Phan;T. Terebessy
利用平行放置的两个极性相反的电极同时产生正负离子，研制了一种基于离子风效应的新型气流发生器。与传统的单极发电机不同，这种双极结构会产生离子风，离子风会离开两个电极，在设备上产生非常低的净电荷。对气流的电流体动力学行为进行了实验和数值研究。当放电电流为5μA时，离子风速可达1.25m/S，动力学转换效率为0.65%，释放的净电荷为−30fA，比放电电流小8个数量级。由于易于扩展和低净电荷，目前的配置有利于空间受限和/或需要中和放电过程的应用，例如惯性流体单元、循环流动换热、电纺聚合物纳米纤维以克服该过程的内在不稳定性，或形成低电荷气溶胶。
A novel air-flow generator based on the effect of ion wind has been developed by the simultaneous generation of both positive and negative ions using two electrodes of opposite polarity placed in parallel. Unlike the conventional unipolar-generators, this bipolar configuration creates an ion wind, which moves away from both electrodes and yields a very low net charge on the device. The electro-hydrodynamic behavior of air-flow has been experimentally and numerically studied. The velocity of ion wind reaches values up to 1.25 m/s using low discharge current 5 μA with the kinetic conversion efficiency of 0.65% and the released net charge of −30 fA, 8 orders of magnitude smaller compared with the discharge current. Due to easy scalability and low net charge, the present configuration is beneficial to applications with space constraints and/or where neutralized discharge process is required, such as inertial fluidic units, circulatory flow heat transfer, electrospun polymer nanofiber to overcome the intrinsically instability of the process, or the formation of low charged aerosol.